Transformers Committee

Chair: Sue McNelly Vice Chair: Bruce Forsyth Secretary: Ed teNyenhuisTreasurer: Paul Boman Awards Chair/Past Chair: Stephen Antosz

Standards Coordinator: Jim Graham

IEEE/PESTransformers

Committee

Spring 2018 Meeting Minutes

Pittsburgh, PAMarch 25 - 29, 2018

Unapproved(These minutes are on the agenda to be approved at the next meeting in Fall 2018)

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TABLE OF CONTENTS

GENERAL ADMINISTRATIVE ITEMS

1.0 Agenda2.0 Attendance

OPENING SESSION – MONDAY MARCH 26, 2018

3.0 Approval of Agenda and Previous Minutes – Susan McNelly4.0 Chair’s Remarks & Report – Susan McNelly5.0 Vice Chair’s Report – Bruce Forsyth6.0 Secretary’s Report – Ed teNyenhuis7.0 Treasurer’s Report – Paul Boman8.0 Awards Report – Stephen Antosz9.0 Administrative SC Meeting Report – Susan McNelly10.0 Standards Report – Jim Graham11.0 Liaison Reports12.0 CIGRE – Raj Ahuja13.0 IEC TC14 – Phil Hopkinson14.0 Standards Coordinating Committee, SCC No. 18 (NFPA/NEC) – David Brender15.0 Standards Coordinating Committee, SCC No. 4 (Electrical Insulation) – Evanne Wang16.0 Hot Topics for the Upcoming – Subcommittee Chairs17.0 Opening Session Adjournment

CLOSING SESSION – THURSDAY NOVEMBER 2, 2017

18.0 Chair’s Remarks and Announcements – Susan McNelly19.0 Meetings Planning SC Minutes & Report – Tammy Behrens20.0 Reports from Technical Subcommittees (decisions made during the week)21.0 Report from Standards Subcommittee (issues from the week)22.0 New Business23.0 Closing Session Adjournment

APPENDIXES – ADDITIONAL DOCUMENTATION

Appendix 1 – Meeting ScheduleAppendix 2 – Semi-Annual Standards ReportAppendix 3 – IEC TC14 Liaison ReportAppendix 4 – CIGRE ReportAppendix 5 - STANDARDS COORDINATING COMMITTEE NO. 18 (NFPA/NEC)Appendix 6 - Meeting Planning Subcommittee Report

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ANNEXES – UNAPPROVED MINUTES OF TECHNICAL SUBCOMMITTEES

NOTE: The Annexes included in these minutes are unapproved by the respective subcommittees and areaccurate as of the date the Transformers Committee meeting minutes were published. Readers areencouraged to check the Transformers Committee website (www.transformerscommittee.org) for the latestrevision of the unapproved and the minutes of the next Transformers Committee meeting for final revisionsprior to approval.

Annex A. Bushings SC – Peter ZhaoAnnex B. Dielectric Tests SC – Ajith VargheseAnnex C. Distribution Transformers SC – Steve ShullAnnex D. Dry Type Transformers SC – Charles JohnsonAnnex E. HVDC Converter Transformers & Reactors – Mike SharpAnnex F. Instrument Transformers SC – Ross McTaggartAnnex G. Insulating Fluids SC – David WallachAnnex H. Insulation Life SC – Sheldon KennedyAnnex I. Meetings SC – Tammy BehrensAnnex J. Performance Characteristics SC – Craig StiegemeierAnnex K. Power Transformers SC – Bill GriesackerAnnex L. Standards SC – Jerry MurphyAnnex M. Underground Trans & Network Protectors SC – Dan Mulkey

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General Administrative Items

1.0 AGENDA

Opening SessionMonday, March 26: 8:00 am - 9:15 am(rosters circulated – attendance required to maintain Member status)1. Welcome and Announcements ............................................................................... Sue McNelly2. Meeting Minute ..................................................................................................... Tammy Behrens3. Approval of Agenda ............................................................................................... Sue McNelly4. Approval of Minutes from Fall 2017 Meeting ......................................................... Sue McNelly5. Chair’s Report & Administrative Subcommittee Report ......................................... Sue McNelly6. Vice Chair’s Report ............................................................................................... Bruce Forsyth7. Secretary’s Report .................................................................................................. Ed teNyenhuis8. Treasurer’s Report ................................................................................................. Paul Boman9. Standards Report .................................................................................................... Jim Graham10. Liaison Representative Reports

10.1. CIGRE ........................................................................................................ Raj Ahuja10.2. IEC TC-14 ................................................................................................... Phil Hopkinson10.3. Standards Coordinating Committee, SCC18 (NFPA Standards) ................... David Brender10.4. Standards Coordinating Committee, SCC4 (Electrical Insulation) ................ Evanne Wang

11. Hot Topics for the Upcoming Week ....................................................................... SubcommitteeChairs

12. New Business & Wrap-up ...................................................................................... Sue McNelly

Closing SessionThursday, March 29: 11:00 am - 12:00 pm1. Chair's Remarks and Announcements ..................................................................... Sue McNelly2. Meetings Planning Subcommittee .......................................................................... Tammy Behrens3. Reports from Technical Subcommittees (decisions made during the week)

3.1. Standards .................................................................................................... Jerry Murphy3.2. Subsurface Transformers & Network Protectors .......................................... Dan Mulkey3.3. Bushings ..................................................................................................... Peter Zhao3.4. Dielectric Tests ........................................................................................... Ajith Varghese3.5. Distribution Transformers ........................................................................... Steve Shull3.6. Dry Type Transformers ............................................................................... Chuck Johnson3.7. HVDC Converter Transformers & Reactors ................................................ Mike Sharp3.8. Instrument Transformers ............................................................................. Ross McTaggart3.9. Insulating Fluids ......................................................................................... David Wallach3.10. Insulation Life ............................................................................................ Sheldon Kennedy3.11. Performance Characteristics ........................................................................ Craig Stiegemeier3.12. Power Transformers .................................................................................... Bill Griesacker

4. Additional Report from Standards Coordinator (issues from the week) ................... Jim Graham5. New Business (continued from Monday) and Wrap-up ........................................... Sue McNelly

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2.0 ATTENDANCE

COMMITTEE MEMBER ATTENDANCE

The following table lists all Committee Members registered to attend the meeting. See section 2.2 for a listof non-Committee Members registered to attend the meeting.

Legend:CM Committee MemberCM-LM Committee Member-IEEE Life MemberCM-EM Committee Member-Emeritus

Committee Member Attendance (Red designates CM added at present meeting)

MemberType Name Company Mon Thu

CM-LM Amos, Richard Retired XCM Anderson, Gregory GW Anderson & Associates, Inc. XCM Ansari, Tauhid ABB X XCM Antosz, Stephen Stephen Antosz & Associates, Inc X X

CM-LM Ayers, Donald Ayers Transformer Consulting X XCM Ballard, Robert Federal Pacific X XCM Balma, Peter Retired X

CM-LM Bartley, William Retired XCM-LM Beaster, Barry H-J Enterprises, Inc. X

CM Beauchemin, Claude TJH2b Analytical Services X XCM Betancourt, Enrique Prolec GE X X

CM-LM Binder, Wallace WBBinder Consultant X XCM Blaydon, Daniel Baltimore Gas & Electric X X

CM-LM Boettger, William Boettger Transformer Consulting LLC X XCM Boman, Paul Hartford Steam Boiler XCM Brender, David Copper Development Assn. XCM Callsen, Thomas Weldy-Lamont Associates XCM Castellanos, Juan Prolec GE XCM Cheim, Luiz ABB Inc. XCM Chiang, Solomon The Gund Company XCM Chiu, Bill Southern California Edison XCM Claiborne, C. Clair Claiborne Consulting LLC X XCM Colopy, Craig EATON Corporation XCM Crotty, John Ameren XCM Damico, Frank Boldrocchi APC XCM Davis, Eric Burns & McDonnell XCM Del Rio, J. Arturo Siemens XCM Denzer, Stephanie Alliant Energy XCM Digby, Scott Duke Energy XCM Dix, Larry Quality Switch, Inc. X XCM Dorris, Don Nashville Electric Service X

CM-LM Fairris, James KMS Electrical Products X XCM-EM Fallon, Donald Retired, formerly with PSE&G X

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MemberType Name Company Mon ThuCM Feghali, Pierre N. American Substation ServicesCM Ferreira, Marcos Advisian-Worley Parsons X X

CM-LM Foldi, Joseph Foldi & Associates, Inc. XCM Forsyth, Bruce Weidmann Electrical Technology X XCM Foster, Derek Magnetics Design, LLC XCM Franchek, Michael Consultant X XCM Frimpong, George ABB X

CM-LM Ganser, Robert Transformer Consulting Services XCM Garcia, Eduardo Siemens X XCM Gardner, James SPX Transformer Solutions, Inc. X XCM Gaytan, Carlos Prolec GE X XCM Ghafourian, Ali H-J Enterprises, Inc, X

CM-LM Girgis, Ramsis ABB Inc. XCM Graham, James Weidmann Electrical Technology X XCM Griesacker, Bill Doble Engineering Co. XCM Gromlovits, Mark EMC OEM Products Division XCM Hachichi, Said Hydro-Quebec X XCM Hakim, Shamaun WEG Transformers USA Inc.CM Hardin, Michael H-J Enterprises, Inc. XCM Harley, John FirstPower Group LLC X X

CM-LM Harlow, James Harlow Engineering Associates XCM-LM Hayes, Roger General Electric X X

CM Heinzig, Peter Weidmann Electrical Technology XCM Hernandez, Ronald Doble Engineering Co. X

CM-LM Herron, John Raytech USA X XCM Hochanh, Thang Surplec Inc. XCM Hoffman, Gary Advanced Power Technologies X

CM-LM Hopkinson, Philip HVOLT Inc. X XCM Iman, Mohammad MGM Transformer CompanyCM John, John Virginia Transformer Corp. X XCM Johnson, Charles ABB Inc. XCM Jordan, Stephen Tennessee Valley Authority X XCM Kaineder, Kurt Siemens AG X X

CM-LM Kennedy, Gael GR Kennedy & Associates LLC X XCM-LM Kennedy, Sheldon Niagara Transformer X X

CM King, Gary Howard Industries X XCM Kinner, Robert FirstPower Group LLC X XCM Kiparizoski, Zan Howard Industries XCM Klaponski, Brian Carte International Inc. X XCM Kraemer, Axel Maschinenfabrik Reinhausen XCM Kraetge, Alexander OMICRON electronics Deutschland GmbH XCM Kulasek, Krzysztof ABB Inc. XCM Lau, Michael Weidmann Electrical Technology X XCM Levin, Aleksandr Weidmann Electrical Technology X XCM Li, Weijun Braintree Electric Light Dept. XCM Lopez-Fernandez, Xose Universidade de Vigo X

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MemberType Name Company Mon ThuCM Mani, Kumar Duke Energy X X

CM-LM Marek, Richard DuPont X XCM Matthews, Lee Howard Industries XCM McClure, Phillip Weschler Instruments XCM McNelly, Susan Xcel Energy X XCM McShane, Charles Patrick Cargill, Inc. X XCM McTaggart, Ross Trench LimitedCM Mehrotra, Vinay SPX Transformer Solutions, Inc. X XCM Melle, Thomas HIGHVOLT X X

CM-LM Miller, Kent T&R Electric Supply Co. X XCM Moleski, Hali S.D. Myers Inc. X

CM-LM Moore, Harold Harold Moore & Associates XCM Mulkey, Daniel Mulkey Engineering Inc X XCM Murphy, Jerry Reedy Creek Energy Services X XCM Murray, David Tennessee Valley Authority X XCM Musgrove, Ryan Oklahoma Gas & Electric X XCM Naderian, Ali Metsco XCM Nambi, Shankar Bechtel XCM Parkinson, Dwight EATON Corporation X X

CM-EM Patel, Bipin Consultant XCM Patel, Poorvi ABB Inc. XCM Patel, Sanjay Royal Smit Transformers XCM Payerle, George Carte International Inc. X XCM Penny, Brian American Transmission Co. X XCM Perjanik, Nicholas Weidmann Electrical Technology X X

CM-LM Platts, Donald Saucon Resourcs Inc X XCM Pointner, Klaus Trench Austria GmbH XCM Poulin, Bertrand ABB Inc. X XCM Prevost, Thomas Weidmann Electrical TechnologyCM Radbrandt, Ulf ABB AB X XCM Rasco, Jimmy Ergon, Inc. XCM Rasor, Robert S.D. Myers Inc. XCM Rave, Martin ComEd XCM Reed, Scott MVA Diagnostics, Inc. X XCM Riffon, Pierre Pierre Riffon Consultant Inc. XCM Robalino, Diego Megger X XCM Roussell, Marnie Entergy X XCM Sampat, Mahesh EMS Consulting Inc.CM Sarkar, Amitabh Virginia Transformer Corp. XCM Sarkar, Subhas Virginia Transformer Corp. XCM Sauer, Daniel EATON Corporation X XCM Schappell, Steven SPX Transformer Solutions, Inc. XCM Schweiger, Ewald Siemens AG XCM Sewell, Adam Quality Switch, Inc. XCM Sewell, Jeremy Quality Switch, Inc. X XCM Sharifnia, Hamid PowerWright Technologies X

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MemberType Name Company Mon Thu

CM-LM Sharma, Devki Entergy XCM Sharp, Michael Trench Limited X XCM Sharpless, Samuel Rimkus Consulting Group X XCM Shekelton, James H-J Enterprises, Inc.CM Shertukde, Hemchandra University of Hartford XCM Shull, Stephen Liberty Utilities (Missouri) X X

CM-EM Sim, H. Jin Jin Sim & Associates, PC X XCM Sizemore, Thomas ABB Inc. X XCM Skinger, Kenneth Scituate Consulting, Inc. X XCM Smith, Edward The H-J Family of Companies X XCM Snyder, Steven ABB Inc.CM Solano, William The H-J Family of Companies X XCM Som, Sanjib Pennsylvania Transformer X XCM Spitzer, Thomas City Transformer Service Co. XCM Spurlock, Mike American Electric Power X X

CM-LM Stahara, Ronald Stahara Consulting X XCM Stiegemeier, Craig ABB Inc. XCM Stinson, Robert General Electric X XCM Sweetser, Charles OMICRON electronics Corp USA X XCM Swinderman, Craig Mitsubishi Electric Power Products XCM Tanaka, Troy Burns & McDonnell X

CM-LM Tendulkar, Vijay PDI X XCM teNyenhuis, Ed ABB Inc. X XCM Termini, Giuseppe PECO Energy Company XCM Thibault, Michael Pacific Gas & Electric X XCM Thompson, Robert RST Consulting, P.C. XCM Thompson, Ryan Burns & McDonnellCM Tostrud, Mark Dynamic Ratings, Inc. X XCM Traut, Alan Consultant X XCM Trummer, Edgar Transatlantic Transformer Consulting XCM Varghese, Ajith SPX Transformer Solutions, Inc. X XCM Vedante, Kiran Mitsubishi Electric Power Products XCM Verdolin, Rogerio Verdolin Solutions Inc. X XCM Verner, Jane Ann Pepco Holdings Inc.CM Vir, Dharam SPX Transformer Solutions, Inc. X X

CM-LM Walia, Sukhdev EATON Corporation XCM Wallace, David Mississippi State University X XCM Wallach, David Duke Energy X XCM Watson, Joe JD Watson and Associates Inc. X XCM Weatherbee, Eric PCORE ElectricCM Weisensee, Matthew PacifiCorp X XCM Wicks, Roger DuPont X

CM-LM Wilks, Alan Consultant X XCM Wimmer, William Dominion Energy XCM Woods, Deanna Alliant EnergyCM Yang, Baitun Pennsylvania Transformer X

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MemberType Name Company Mon Thu

CM-LM Yule, Kipp BechtelCM Zhao, Peter Hydro One X XCM Ziomek, Waldemar PTI Manitoba Inc. X

Total Members present: 156 89% of Members Present of 218 members: 72% 41%

Based upon the above attendance totals:Quorum was achieved at Monday Opening Session.Quorum not achieved at Thursday Closing Session.

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GENERAL ATTENDANCE

The following table lists all non-Committee Members registered to attend the meeting. See section 2.1 for alist of Committee Members registered to attend the meeting.

Legend:AP Active ParticipantAP-LM Active Participant-IEEE Life MemberII Interested IndividualII-LM Interested Individual-IEEE Life MemberPCM Past Committee Member

MemberType Name Company Mon ThuAP Abbott, Scott PPG IndustriesII Abdelkamel, Hamid Ameren XII Adkins, Joseph HICO America XII Aikens, Thomas Virginia Transformer Corp.II Al Yousuf, Mohammed PSEG Long Island X

AP Allen, Jerry Metglas, Inc.II Antosz, Steve Pennsylvania Transformer X

AP Antweiler, James Schneider Electric XAP Armstrong, James Siemens EnergyII Armstrong, Rodney Mitsubishi Electric Power ProductsII Arnold, Elise Starkstrom-Geraetebau GmbH XII Attard, Jason Consolidated Edison Co. of NY XII Bachand, Martin Cloverdale Paint Inc. XII Badaracco, Ken Hitachi T&D Solutions, Inc.II Balban, Sinan Oz Direnc LtdII Banhalmi Kramer, Liza Con Edison XII Banovic, Mladen Transformers Magazine

AP Baranowski, Derek Baron USA, LLCII Bargone, Gilles FISO Technologies Inc. XII Barrientos, Israel Prolec GE X X

AP Bartek, Allan C-K Composites XAP Basel, Cheryl WEG Transformers USA Inc. XII Baugus, John Sharp Control Services, LLC X X

AP Baumgartner, Christopher We Energies XII Bazemore, Brian Marsh Mclennan AgencyII Beck, Scott LakeView Metals, Inc.

AP Behrens, Tammy SPX Transformer Solutions, Inc.AP Bell, Myron Delta Star Inc. X XAP Benach, Jeffrey Weidmann Electrical TechnologyAP Bercea, Emil Power Diagnostix Germany XII Biggie, Kevin Weidmann Electrical Technology X X

AP Bigham, Lee Instrument Transformer Equip CorpII Bin, Jackie Magnetics Design, LLC

APBlackmon, Jr., James

Georgia Power Co. X

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MemberType Name Company Mon ThuAP Blackwell, Zack TCI Sales, Inc.II Blais, Nicolas Nomos Systems X

AP Blake, Dennis Pennsylvania TransformerII Blew, David PSE&G X X

AP Boege, Alan Orto de Mexico XII Bohonek, Mike Duquesne Light Co. X XII Bolar, Sanket Megger X

AP Bolliger, Alain HV Technologies, Inc. XII Bolliger, Dominique HV TECHNOLOGIES, Inc. XII Borowitz, James Eversource Energy XII Bradford, Eric General Electric

AP Bradshaw, Jeremiah Bureau of Reclamation X XII Brannen, Randy Southern Company Transmission X

AP Brauer, Stephan Morgan Schaffer XII Bray, Elizabeth Southern Company Services XII Brett, John Delta-X Research Inc. X

AP Britton, Jeffrey Phenix Technologies, Inc. X XAP Brown, Darren Howard Industries X XII Bruno, Mirvil ABB Inc.

AP Brusetti, Robert Doble Engineering Co. XAP Burde, Jagdish PDI X XAP Campbell, James Retired / Free Agent X XAP Cantrell, Rick Sunbelt TransformerII Carvalho, Jose Efacec Energia, SA

AP Caskey, John NEMAAP Castillo, Alonso M&I Materials, Inc.II Caverly, David Trench Limited

AP Chakraborty, Arup Delta Star Inc. XII Chambers, Stuart Powertech Labs Inc. X

AP Chapa, Raymundo WEG Transformers USA Inc. XAP Cheatham, Jonathan General ElectricII Cheema, Muhammad Ali

MasoodNorthern Transformer Corporation

II Chiodo, Vincent HICO AmericaAP Chisholm, John IFD Corporation X XII Chisholm, Matthew IFD Corporation X XII Cho, Eun HICO America XII Choi, Young Sang HICO America X

II-LM Chow, Chih Pepco Holdings Inc. X XAP Christodoulou, Larry Electric Power SystemsAP Chrysler, Rhett ERMCO XII Chu, Wen-Ping Shihlin Electric XII Chwialkowski, Artur ABB Lodz Poland X

AP Clonts, Jermaine Power Partners XAP Collin, Jean-Francois Nomos SystemsII Corapsiz, Sedat Hilkar

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MemberType Name Company Mon ThuAP Costa, Florian Corimpex USA, Inc. XAP Cox, Paul GE Grid SolutionsII Craig, Douglas Richards Manufacturing Co.

AP Craven, Michael Phoenix Engineering Services X XII Cross, James Kinectrics XII Cruz Cienfuegos, Jorge Partner Technologies Inc. XII Cui, Yuanzhong TBEA Shenyang X

AP Cunningham, Kelcie Delta Star Inc.II Cyr, Marc HiVo Lab X

AP Dahlke, Michael Central Moloney, Inc. X XAP Daniels, Timothy Weidmann Electrical TechnologyII Dargiel, Piotr ABB Lodz PolandII Dauzat, Thomas General Electric XII Davoudi, Pouneh Hyundai Power Transformers USA X

AP Davydov, Valery Mr. Valery Davydov X XII De Oliveira, Everton Siemens Ltda X X

PCM-LM

Degeneff, Robert Utility Systems Technologies, Inc.

II del Valle, Yamille NEETRAC XII Demes, Rolando Arteche

AP DeRouen, Craig ERMCOAP Dhawan, Anil ComEd X XAP Di Biase, Antonio Tempel XII Diaz, Rodolfo Hitachi T&D Solutions, Inc. X XII Dietrich, William EATON Corporation X XII Dillon, Nikolaus Dominion X XII Dinh, Huan ABB Inc.II Dolloff, Paul East Kentucky Power

AP Dorsten, James Alabama Power X XII Doyle, Lee VaisalaII Drobnick, Jason Jordan Transformer XII Dua, Yogesh Quality Transformers & Electronics X X

AP-LM Dukarm, James Delta-X Research Inc. X XII Dulac, Hakim Qualitrol Company LLC XII Dunn, James Unifin InternationalII Durante, Joe Mitsubishi Electric Power Products

AP-LM Duval, Michel Hydro-Quebec IREQII Edwards, Pam Central Moloney, Inc. XII Elassad, Yann M.S. ResistancesII Elliott, Joshua Nashville Electric Service X

AP Elliott, William General Electric XII Enders, Matthew Oncor Electric Delivery X

AP Euvrard, Eric RHM InternationalII Evans, Aaron HICO AmericaII Faherty, Joseph OTC Services XII Fallows, Robert R.E. Uptegraff X

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MemberType Name Company Mon ThuAP Faulkner, Mark EATON CorporationAP Fausch, Reto RF SolutionsAP Fedor, Ken Smit Transformer Sales, Inc. XII Feldmann, David HICO AmericaII Fenton, Roger Fenton Solutions X XII Ferguson, Glenn Efacec USA

AP Field, Norman Teshmont Consultants LP X XII Fish, Lori Entergy XII Flanigan, Lora Transformers MagazineII Foata, Marc Maschinenfabrik Reinhausen XII Ford, Seaira Baron USA, LLC

AP-LM Forrest, George Uptime Solutions Co, LLC XAP Foschia, John SPX Transformer Solutions, Inc. X XAP Franchitti, Anthony PECO Energy Company X XII Friend, Fredric American Electric Power X X

AP Gagnon, Jean-Francois Siemens Transformers CanadaII Galhardo, Leonardo DuPont X

AP Gara, Lorne Orbis Engineering XAP Garcia, Benjamin Southern California EdisonII Garcia, David EATON Corporation XII Garneau, Jean Essex Wire XII Garrity, Jonathan Tagup X

AP Geibel, David ABB Inc. X XII Gelinas, Sylvain Modine (Coiltech)II Gilliver, Alex Petro-Canada Lubricants Inc. XII Gilmer, David TCI Sales, Inc.

AP Golner, Thomas SPX Transformer Solutions, Inc. X XII Gonzalez Ceballos, Jose

AntonioMeramec Instrument Transformer Co. X

AP Gonzalez de la Vega, Jorge Orto de Mexico XII Gopalan, Praviraj Virginia Transformer Corp. X X

AP Goydich, Shane RoechlingAP Gragert, Jeffrey Xcel Energy XAP Gross, Detlev Power Diagnostix X XII Gyore, Attila M&I Materials Ltd XII Hall, John Tennessee Valley Authority X X

AP Hamilton, Kendrick Power PartnersAP Hammer, Mark Jordan Transformer XII Hampton, Kenneth Baltimore Gas & Electric XII Han, Suh Joon Dow Chemical Company X

AP Harder, Steven Siemens EnergyII

Havens, BridgetAmeren X

II Heiden, Kyle EATON Corporation X XII Henault, Paul IFD Corporation XII Hennessey, John Cindus Corp.

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MemberType Name Company Mon Thu

II Henry, Jeffery Mapes & SprowlII Ho, Calvin Los Angeles Depart. of Water & Power X

AP Holmes, Jill Bureau of ReclamationII Hummel, Carl HICO AmericaII Huynh, Sikhiu Pacificorp X

AP Jakob, Fredi ConsultantII Jakob, Karl Delta Star Inc.

AP Jaroszewski, Marion Delta Star Inc. XII Jhala, Anirudhdhsinh Transformers & Rectifiers (India) Ltd X

AP Johnson, Derek Reinhausen Mfg. XII Johnson, Toby Pacificorp X X

AP Johnstone, Ted Cogent Power Inc. XII Jones, Grace Delta Star Inc. X

AP Joshi, Akash Black & Veatch XII Kessler, Stacey Basin Electric Power Cooperative X

AP Kirchner, Lawrence Siemens IndustryII Kittrell, Brad Consolidated Edison Co. of NY XII Klein, Kenneth PDI/ONYX X XII Konta, Ivan KONCAR - Instrument Transformers X

AP Kornowski, Marek Polycast International XII Korte, Steve Cargill, Inc.II Koshel, Anton Delta Star Inc. X XII Kostich, Nicholas Ameren X

AP Kranich, Neil Jordan Transformer XII Kuntz, Robert HICO America XII Kuppuswamy, Raja Dynamic Ratings Inc. X

AP Kurth, Bernhard Reinhausen Mfg.AP Lachman, Mark Doble Engineering Co. XII Lam, Tony Poon Yee Advance Utility Equipment Sales Inc.

AP Lamorey, Maria PPG IndustriesII Langley, Jon Delta Star Inc.

AP Larochelle, David NDB Technologies XII Larzelere, William Evergreen High Voltage X

AP Lawless, Andrew Covested International XAP Leal, Fernando Prolec GE XAP Leal, Gustavo Dominion Energy X XII Lecomte, Antoine JST Transformateurs XII Leece, Benjamin American Electric Power XII Lejay, Olivier GE Grid

AP Levi, Raka AMforum X XII Li, Jinzhong China Electric Power Research InstituteII Lima, A. Pedro Efacec Energia, SA X XII Lindgren, Carl Healthy Future PediatricsII Lindgren, Eric Sandia National Laboratories

AP Lively, Parry Tempel XAP Livingston, Kerry Great River Energy X

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MemberType Name Company Mon Thu

II Lizardo, Alex Cargill, Inc. XAP Lobo, Gregorio Mitsubishi Electric Power Products X XAP Locarno, Mario Doble Engineering Co. XAP Lopes, Ana Efacec Energia, SAII Lopes, Ricardo Efacec Energia, SA X XII Lowther, Jr., Mark Mitsubishi Electric Power Products XII Lu, William Shanghai Huaming Power Equipment

AP Lugge, Andrew Mitsubishi Electric Power ProductsII Lukenda, Nikola Petro-Canada Lubricants Inc.

AP Macdonald, Nigel Trench LimitedAP Macias, Alejandro CenterPoint Energy X XII Magee, Carvey Mississippi State University

AP Mai, Tim-Felix Siemens AG X XAP Malde, Jinesh M&I Materials Inc. XAP Mamtora, Jitendra Transformers & Rectifiers (India) Ltd XAP Mango, Joseph NextEra Energy ResourcesII Mansuy, Bruno Trench France SAS X

APMarquardt, Bryan

AK Steel X

II Martig, Arnaud Trench LimitedII Martin, Robert R.E. Uptegraff

AP Martin, Terence Doble Engineering Co. XAP Martin, Zach Delta Star Inc.II Martinez, Bene Metglas, Inc.II Martinez, Rogelio Georgia Transformer X

II-LM Marx, Sr., Robert Marx Associates, Inc.AP Mayer, Robert San Diego Gas & Electric XII Mayer, Robert Siemens AG XII McBride, Brian Cargill, Inc. X

AP McBride, James JMX Services, Inc. XII McCloskey, Scott Amran Inc.II McGlew, Barry Cargill Industrial Specialties (CIS) X

AP Mciver, James Siemens EnergyPCM McQuin, Nigel McQuin Electrical Power Consulting, Inc. X X

II Medina, Juan Pablo Olsun Electrics Corporation XII Melichar, Ryan FirstEnergy Corp. X XII Meton, Therence Weidmann Electrical Technology XII Middleton, Robert RHM International

AP Minhaz, Rashed Transformer Consulting Services Inc. XII Minikel, Justin EATON Corporation XII Misur, Slobodan Trench LimitedII Montpool, Rhea Schneider Electric XII Moore, David ABB Inc.II Morakinyo, Paul PSE&G

AP Morales-Cruz, Emilio Qualitrol X XII Morgan, Michael Duke Energy X

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MemberType Name Company Mon Thu

II Morrow, Gianetta Meramec Instrument Transformer Co. XII Mulcahy, Tom Dominion Energy XII Munn, William Southern Company Services XII Munoz Molina, Martin Orto de Mexico X

AP Mushill, Paul Ameren XII Natale, Anthony HICO AmericaII Neal, Jason HICO AmericaII Neder, Frank Trench Germany GmbH

AP Neild, Kristopher Megger X XAP Nikoley, Ingo Electrical Consultants, Inc.AP Nims, Joe Allen & Hoshall, Inc. XAP Nunez, Arturo Mistras Group, Inc.II Nunn, Kraig ShockWatch X

AP Oakes, Stephen Instrument Transformer Equip Corp XAP Ogajanov, Rudolf ABB Inc. XAP Oliver, William Virginia Transformer Corp. XII O'Malley, Anastasia Consolidated Edison Co. of NY X XII Oriti, Samuel Retired X XII Osorio, Luis The H-J Family of Companies XII Owens, Roger Central Moloney, Inc. X XII Padgett, Alan N. American Substation Services

AP Panetta, Sergio I Gard Corporation XPCM Papp, Klaus Klaus Papp X

II Pargaonkar, Vijay Virginia Transformer Corp.II Partyka, George Partner Technologies Inc. X

AP Patel, Dhiru Hammond Power Solutions XII Pellon, Verena Florida Power & Light

AP Pepe, Harry Phenix Technologies, Inc. X XII Perich, Edmundo I-Gard Corp.

AP Peterson, Alan Utility Service CorporationAP Petosic, Branimir Boiler Inspection & Insurance of Canada XII Pietraszczyk, Marcin ABB Lodz Poland X

AP Pinon, Oscar OTC Services XII Plath, Cornelius OMICRON electronics GmbH X XII Price, Elizabeth IFD Corporation X X

AP Prince, Jarrod ERMCO XII Pritz, Louis Florida Power & Light X

AP Pruente, John SPX Transformer Solutions, Inc. XII Prykhodko, Volodymyr ZTZ Services International X

AP Quandel, Jennifer HPN GlobalII-LM Rahangdale, Ravi Pennsylvania Transformer

II Ramirez Bettoni, Eduardo Xcel EnergyII Ramirez, Juan CELECO X X

AP Rashid, Adnan Measurement Canada/Industry Canada X XII Ratcliffe, Robert Georgia Transformer

AP Rathi, Rakesh Virginia Transformer Corp. X X

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MemberType Name Company Mon Thu

II Rato, Nuno Efacec Energia, SAII Ratty, James Electronic Technology Inc.II Raymond, Mark UL LLCII Reagan, John Duke Energy XII Reeder, Perry SPX Transformer Solutions, Inc.

AP Reiss IV, Clemens Custom Materials, Inc. X XII Rhodes, Thomas Duke EnergyII Ricci, Anthony FirstEnergy Corp X X

AP Riopel, Sebastien Electro Composites ULCII Riordan, Kevin WEG Transformers USA Inc. X XII Robles, Eduardo EATON Corporation X

AP Rock, Patrick American Transmission Co. X XII Roessig, Andreas ABB AG X

AP Roman, Zoltan General ElectricAP Rottenbacher, Andre Ritz Instrument TransformersII Saad, Mickel ABB Inc. X XII Salgado, Pedro Electronic Technology Inc.II Salmon, William Dominion EnergyII Salva, Jose JST Transformateurs X XII Sanchez, Eduardo Pacific Gas & Electric XII Sandhu, Surinder Sanergy Consulting X X

PCM Sankarakurup, Dinesh Niagara Transformer X XII Santulli, Jennifer IEEE X

AP Sbravati, Alan Cargill, Inc. X XII Schaffer, Paul Gulf Power Company XII Schaffhauser, Cyril JST Transformateurs X X

AP Schickedanz, Frank Maschinenfabrik ReinhausenAP Schiessl, Markus Starkstrom-Geraetebau GmbH X XAP Schleismann, Eric Southern Company Services X XAP Schrammel, Alfons Siemens AG X XII Schrom, Wesley Carolina Dielectric Maint & Testing Co. XII Schwartz, Dan Quality Switch, Inc. X XII Schwarz, Carl Phoenix Electric Corporation XII Scoby, Denny PG Access X

AP Selvaraj, Pugazhenthi Virginia Transformer Corp. X XII Sen, Cihangir Duke Energy XII Sestito, John Hyundai ElectricII Sethi, Kabir ABB AG X

AP Sewell, Russell Quality Switch, Inc. XII Sexton, Aron KinectricsII Shalabi, Jaber VanTran Industries, Inc. X

AP Shannon, Michael Rea Magnet Wire XII Sharifi, Masoud Siemens Wind X X

AP Sheehan, David HICO America XAP Shem-Tov, Mark VRT Power X XAP Sheridan, Peter SGB USA, Inc. X

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MemberType Name Company Mon Thu

II Shin, Jane Consolidated Edison Co. of NY XAP Shirasaka, Yukiyasu Hitachi, Ltd. X XII Simon, Joanne --

AP Simonelli, Richard SPX Transformer Solutions, Inc.II Simonov, Igor Toronto Hydro X X

AP Simons, Andre Cogent Power Inc. XAP Singh, Kushal ComEdAP Slattery, Christopher FirstEnergy Corp X XAP Smith, K. Shane Delta Star Inc. X XAP Sohn, Yong Tae Hyosung / HICO XAP Sordo, Salvador TBEA USA XII Spaulding, James City of Fort Collins X X

AP Spiewak, Erin IEEE XII Spoone, Travis EATON Corporation

AP Stank, Markus Maschinenfabrik Reinhausen XAP Stankes, David 3M XII Steeves, Gregory Baron USA, LLC

AP Steineman, Andrew Delta Star Inc. X XAP Steineman, Christopher Delta Star Inc. XII Steinhauser, Tanya IEEE X

AP Stem, Gregory Cardinal Pumps & Exchangers XII Stevens, Charles Petro-Canada America Lubricants Inc.II Stewart, Jonathan National Electrical Manufacturers

AssociationAP Stockton, David H-J Family of CompaniesII Su, Roy Fortune Electric X XII Subramany, Shankar KEMA Laboratories, DNV GL XII Suddarth, Wes Nashville Electric Service

AP Sullivan, Kevin Duke Energy XII Sun, Yunhan China Elect. Equip. Industry Assoc. XII Suresh, Babanna Southwest Electric Co. XII Szczechowski, Janusz ABB Inc. XII Tabakovic, Dragan Meramec Instrument Transformer Co. XII Taylor, Marc Cogent Power Inc. XII Tedesco, Joseph ABB Inc. XII Tekin, D. Serhat Meramec Instrument Transformer Co.II Theisen, Eric Metglas, Inc.II Thompson, Clifton N. American Substation Services X

AP Tillery, Timothy Howard Industries X XII Tinsley, Robert Cloverdale Paint Inc. XII Tong, Lin SYET

AP Tozzi, Marco Camlin PowerAP Trivitt, Donnie Oklahoma Gas & Electric XII Tyler, Lee Warco, Inc. XII Uhlmann, Olivier Reinhausen Canada Inc. XII Vailoor, Vasanth Trantech X

Page 19 of 54

MemberType Name Company Mon ThuAP Valentin, Reinaldo Duke Energy XII Valmus, Jeff Cargill, Inc. X

AP Van Horn, Jeremy IFD Corporation X XAP VanderWalt, Alwyn Public Service Co. of New Mexico X XAP Varnell, Jason SPX Transformer Solutions, Inc. XII Vartanian, John National Grid XII Veillette, Michel Morgan Schaffer X

AP vonGemmingen, Richard Dominion X XII Vuittenez, Emmanuel JST Transformateurs XII Vukovic, Dejan ABB AG X X

AP Walker, David MGM Transformer Company X XII Walters, Mark Mitsubishi Electric Power Products X

AP Walters, Shelby Howard Industries XAP Wang, Evanne DuPont X XII Wang, Lei Peak Demand Inc. XII Wang, Lin China Electric Power Research InstituteII Warren, Robert DNVGL KEMA Laboratories X

AP Weathington, Larry N. American Substation ServicesII Webb, Bruce Knoxville Utilities Board X XII Webb, Matthew SPX Transformer Solutions, Inc.II Webber, Kenyon Entergy X

AP Welch, Lee Georgia Power Co. X XII Welton, Drew Beckwith Electric Co. X

AP Werelius, Peter Megger XII Weyer, Daniel Nebraska Public Power District XII Whitehead, William Camlin Power X

AP Williams, Randy ABB Inc.II Willingham, Lee Central Moloney, Inc. X X

AP Wimberly, Barrett GE Grid Solutions XAP Winstanley, Gerard NEMA XAP Winter, Dr. Alexander HIGHVOLT Pruftechnik Dresden X X

PCM Woodcock, David WICOR AmericasII Woost, Bill OTC Services Inc

AP Wright, Jeffrey Duquesne Light Co. X XII Yao, Daniel Shihlin Electric XII Yeh, Tzi Han Shihlin Electric XII Yingling, Thomas Hubbell ICD, Inc.II Yu, Chun-Sheng Shihlin Electric X

AP Yun, Joshua WEG Transformers USA X XAP Zaman, Malia IEEE X XII Zhang, Ji Mitsubishi Electric Power ProductsII Zhang, Jim Arizona Public Service Co.

PCM Zhang, Shibao PCORE ElectricAP Zibert, Kris Allgeier, Martin and Associates X XAP Ziger, Igor KONCAR - Instrument Transformers X X

Page 20 of 54

Total Non-Committee MemberAttendance:

285 111

Total Committee Member Attendance: 156 89Total Attendance: 441 200

In addition to the above totals, there were 183 of the total attendees that attended both the Monday andThursday Sessions and 458 that attended either the Monday or the Thursday Session.

Monday

Non-CM CM

Thursday

Non-CM CM

Page 21 of 54

Monday Opening Session

3.0 APPROVAL OF AGENDA AND PREVIOUS MINUTES – SUE MCNELLY

The Chair presented the Agenda and asked if there was any opposition to unanimous approval of the Agenda.Hearing none, the Agenda was approved.

The Chair asked if there was any opposition to unanimous approval of the minutes of the Fall 2017 meetingthat have been posted on the website. Hearing none, the minutes of the Fall 2017 meeting were approved aswritten.

4.0 CHAIR’S REMARKS & REPORT – SUE MCNELLY

Chair’s Remarks – Presented at the Monday General Session -- Pittsburgh, Pennsylvania - Spring 2018

IEEE PES TECHNICAL COUNCIL

The Technical Council of the IEEE Power Energy Society (PES) is composed of the Chairpersons of thePES Technical and Coordinating Committees, plus the Chairpersons of Standing Committees reporting to it.The fu ll organizational structure of the PES is shown in the current version of the IEEE PES OrganizationChart and Committee Directory (http://www.ieee-pes.org/pes-organization-chart-and-committee-directory).The PES Technical Committees report to the Technical Council on matters concerning membership,recognition, technical publications, scope and the coordination of the Power Energy Society generatedstandards. For standards relating to their technical scope, the Technical Committees work directly with theIEEE-SA Standards Board and the PES Standards Coordinating Committee. For further details on theStatement of Purpose and Scope of Activities for the PES Technical Council Please see; http://www.ieee-pes.org/statement-of-purpose-and-scope-of-activities-for-the-pes-technical-council.

Technical Council Officers & MembersThe officers and members of the Technical Council are listed below for your reference. Each individuallisted here is the chair of that respective committee.

TECHNICAL COUNCIL OFFICERS 2018-2019

Chair Farnoosh Rahmatian (Quanta Technology)Vice Chair Vijay Vittal (Arizona State University)Secretary Hong ChenPast Chair Miriam Sanders (SEL University)

STANDING COMMITTEES 2018-2019 ChairTechnical Activities Awards Miriam SandersTechnical Sessions Vijay VittalOrganization & Procedures, O&P Hong ChenStandards Coordinating Ted BurseWebsite Dan Toland

COORDINATING COMMITTEES 2018 Chair

Intelligent Grid & Emerging Tech., IGETCC Doug Houseman

Marine Systems, MSCC Dwight Alexander

Wind and Solar Power, WSPCC Debbie Lew

Page 22 of 54

TECHNICAL COMMITTEES 2018 Chair

Analytical Methods for Power Systems, AMPS Alex Schneider

Electric Machinery, EM Kay Chen

Energy Development & Power Generation, EDPG Ward Jewell

Energy Storage & Stationary Battery, ESSB Chris Searles

Insulated Conductors, IC E. Rusty Bascom

Nuclear Power Engineering, NPE Thomas Koshy

Power System Communications & Cybersecurity,PSCC

Mike Dood

Power System Dynamic Performance, PSDP Claudio Canizares

Power System Instrumentation & Measurements,PSIM

Ernst Hanique

Power System Operation Planning & Economics,PSOPE

Luiz Barroso

Power System Relaying & Control, PSR Pratap Mysore

Smart Buildings Loads & Customer Systems, SLCS Shawn Chandler

Substations, SUB Diane Watkins

Surge Protective Devices, SPD Ronald Hotchkiss

Switchgear, SWGR T Irwin

Transformers. TRANS Susan McNelly

Transmission and Distribution, T&D Gary Chang

PES Technical Council ActivitiesJoint Technical Committee Meeting, JTCM. https://www.pestechnical.org/. January 7, 2017. Chicago.This is the first of two annual gatherings where Technical Council meets to discuss activities of theStanding, Coordinating, and Technical Committees.

There was an update on PES Standards Tutorials (webinars). Funding from IEEE PES is no longeravailable for these webinars. Future webinars will need to be self-funded.

There were discussions about poor response on the voting on the Tech Council’s new O&P document andthe need for technical liaisons for the Intelligent Grid and Emerging Technologies.

Page 23 of 54

IEC/IEEE JOINT & ADOPTED STANDARDS

ISO/IEC Standard Adoption Policy Change

Erin Spiewak recently indicated that ANSI has notified IEEE of a change to the ANSI/IEEE licenseagreement for the sale of National adoptions of ISO and IEC Standards. This change is mandating that anadopted standard be labeled as a “U.S. national” standard and must include a U.S. national forward andnational branding on each page. Also, the adopted standard could only be actively sold/marketed in thenation in which it was adopted. Therefore, IEEE is no longer adopting ISO or IEC standards. IEEE-SAis a global organization and the above is inconsistent with this. ISO or IEC can still adopt an IEEE standard.

The above does not affect the joint development process. The agreements regarding dual logo/jointdevelopment are still in place.

Bureau of Indian Standards (BIS)

Malia Zaman informed us that the BIS have requested permission to adopt IEEE C57.155™-2014 withcountry-specific changes. Once the adoption is complete it will be a national standard in India. This hasbeen brought to us in the event we wish to solicit input or participation during the next revision.

TRANSFORMERS COMMITTEE ACTIVITIES

Officers Progression for the 2016-2017 PeriodIn accordance with the rules set forth in the Transformers Committee Policies and Procedures Manual, theCommittee Officers (the Chair, the Vice Chair, and the Secretary) are recommended by the incumbentChair of the Committee with the concurrence of the immediate Past Chair and are approved by the Chairof the Technical Council. Each is expected to serve a two-year term, and to follow the establishedprogression cycle for the next two-year period. The table below shows the progression of officer'sassignment for the two years beginning January 1, 2018.

In addition to the normal officer progression, Paul Boman started as the Committee Treasurer on January1, 2018 replacing long time Treasurer, Greg Anderson. This position will now have a maximum term limitof 5 years per IEEE recommendations.

Please join me in welcoming the new officers and provide them with any needed support as they getfamiliar with and comfortable in their new roles.

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Officer Role 2018-2019 Term

Committee Chair Susan McNelly

Committee Vice-Chair Bruce Forsyth

Committee Secretary Ed teNyenhuis

Past Chair / Awards Chair Stephen Antosz

Committee Treasurer Paul Boman

Standards Coordinator* James Graham

* Treasurer and Standards Coordinator are excluded from the 2 year progression cycle.

A change in the Transformer Committee Meeting Planning Subcommittee was also made with TammyBehrens taking over this position due to the resignation of Greg Anderson after the fall meeting inLouisville.

Craig Stiegemeier also replaced Ed teNyenhuis as Chair of the Performance Characteristics Subcommitteedue to Ed moving into the Committee Secretary and officer progression.

Reappointment of SC Chairs

SC Chair positions were reconfirmed in the fall of 2017. This will be revisited in the fall of 2019 or asreplacements due to vacancies arise. Tammy Behrens was appointed and agreed to serve as the new Chairof the Meetings SC starting January 1, 2018 to replace Greg Anderson who after many years in thisdemanding position stepped down. Craig Stiegemeier was appointed and agreed to serve as the new Chairof the Performance Characteristics SC starting January 1, 2018 to replace Ed teNyenhuis who became thenew Committee Secretary.

Liaison Representatives - Appointed by Committee Chair.· CIGRE - Raj Ahuja· IEC TC-14 - Phil Hopkinson· Standards Coordinating Committee, SCC No. 18 (NFPA/NEC) – David Brender· Standards Coordinating Committee, SCC No. 4 (Electrical Insulation) - Evanne Wang

Craig Swinderman will be taking over the CIGRE Liaison position after the Pittsburgh meeting. Thankyou Raj for your service.

Committee ScheduleAs part of the new split of meeting planning duties, a new schedule format was developed. The newschedule will automate the printed formal schedule, reports needed for the Guidebook App and thescheduling for the RFID system. A new schedule listing by SCs is also automatically generated. The newschedule was developed and managed by Susan McNelly for the Pittsburgh meeting. The plan will be forthis to be handed off to another person going forward, if possible.

Page 25 of 54

RFIDRFID tags on the name badges will again be used for the Pittsburgh meeting in a similar manner as pastmeetings. Kris Zibert will be managing the RFID programming. Please make sure that contact informationthat will be sent out with the preliminary schedule before each meeting is kept current.

Thursday morning Tutorials and Webinar opportunitiesWe always continue to look for new and exciting topics. Tom Prevost is the leader of this activity forcoordination efforts. If interested, see Tom or any of the officers. Any feedback by attendees is welcome.

IEEE PES has expressed a desire that each of the Technical Committees offer Webinar opportunitiesregarding our standards work. The Committee has been approached with a request to endorse a webinarentitled “Measuring the water content of transformer cellulosic insulation: experience in Australia”, by Dr.Dan Martin & Prof. Tapan Saha from the Power & Energy Systems Group, University of Queensland.They were informed that we could not endorse the webinar, but that after the proposed material is reviewed,it may be possible to provide the Committee’s sponsorship. Review of the provided presentation ispresently in progress.

Association Management System, 123 SignupAll WG’s should be using AMS to track their membership and meeting attendance. If you are unable toso, please assign it to someone in your group who can.

IEEE will be moving toward use of the AMS, 123 Signup system starting in 2018. As a result, the yearlycost to the Transformers Committee will now be covered by IEEE. There is not expected to be any changein how the system is presently used. The Committee will still be responsible for registration system andcredit card fees.

Website Password UsageIt is not for public dissemination. It is for use by our meeting attendees (CM, AP, II) and associated workof the Transformers Committee. One can think of it as a benefit of attendance and participation. It maybe used by meeting attendees and within attendees immediate workplace, but not beyond that.

Call for Patents (Essential Patent Claims)

https://standards.ieee.org/about/sasb/patcom/patc.html

A call for patents is required at every Working Group (WG) meeting. This is a reminder to all WG leadersto call for patents and record the results in the meeting minutes. Note it is not required to show the patentslides; it is only necessary to call for patents and record the response in the minutes. If there is a claimreported, the WG chair shall include in the minutes the name & affiliation of the individual asserting apatent claim. Here is what each WG Chair should ask at the beginning of each WG meeting. This appliesonly to WG’s after the PAR is approved by the IEEE-SA Standards Board.

If anyone in this meeting is aware of any patent claims that are potentially essential toimplementation of the document under consideration by this WG, that fact should be made knownto the WG and recorded in the meeting minutes.

There should be no discussion of any patent claim identified, only that it be identified and recorded. Evenif no patent claims are identified, the minutes are to indicate that the call for patents was made.

Page 26 of 54

If a patent holder or patent applicant is identified, then the WG Chair (or designee) should ask the patentholder or patent applicant of a patent claim that might be or become an Essential Patent Claim to completeand submit a Letter of Assurance in accordance with Clause 6 of the IEEE-SA Standards Board Bylaws.

A Letter of Assurance (LoA) is a document submitted to IEEE-SA by a patent holder which documentsthe submitter’s position with regard to ownership, enforcement, or licensing of an Essential Patent Claimthat may be incorporated into a specific IEEE document. As of January 2018, the following five (5)existing Accepted Letters of Assurance pertain to our committee:

1. C57.127 Guide for Detection and Location of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers and Reactors. LoA recorded September 6, 2005. Filed by ABBTechnology, Ltd. Patent Serial Number: 6,340,890 (US)

2. C57.139 Guide for Dissolved Gas Analysis in Transformer Load Tap Changers. LoA recordedJanuary 16, 2013. Filed by Maschinenfabrik Reinhausen GMBH. Patent Serial Number: Notindicated

3. C57.163 Guide for Establishing Power Transformer Capability while under GeomagneticDisturbances. LoA recorded May 5, 2014. Filed by Advanced Power Technologies, LLC. PatentSerial Number: 20130285671 (US)

4. C57.147 Guide for Acceptance and Maintenance of Natural Ester Fluids in Transformers, andC57.155 Guide for Interpretation of Gases Generated in Natural Ester and Synthetic Ester-ImmersedTransformers. LoA recorded April 5, 2017. Filed by Cooper Power Systems, LLC. Patent SerialNumber: 6,398,986 (US), 6,905,638 (US), 7,651,641 (US)

5. C57.147 Guide for Acceptance and Maintenance of Natural Ester Fluids in Transformers, andC57.155 Guide for Interpretation of Gases Generated in Natural Ester and Synthetic Ester-ImmersedTransformers. LoA recorded April 5, 2017. Filed by Cooper Power Systems, LLC. Patent SerialNumber: PI 9612097-5

Distribution of an LoA to the related Working Group is permitted.

Ballot Resolution Groups (BRG)There continues to be “discussion” about this issue. As a reminder from the Chair, all BRG’s should bedone with a smaller group, not the entire Working Group. Only substantial issues brought up in the ballotneed to be discussed with the WG. However, the WG must be presented with and approve the final outputwork of the BRG. The Transformers Committee P&P, Section 5.0, which addresses subgroups of theworking group, states "Any resolution of a subgroup shall be subject to confirmation by the workinggroup." A BRG is a subgroup of the working group, so section 5.0 applies. Unless explicitly empoweredby the working group otherwise, the BRG comment resolutions shall be presented to the workinggroup for confirmation and approval. Concurrence requires approval of two-thirds of the voting WGmembers and is to be documented in the meeting minutes as having been done. Existing Ballot ResolutionGroups are NOT exempt.

Transformers Committee Policies and Procedures (P&P) UpdateThe TC Sponsor P&P was approved on Mar 27, 2014 and expires on Dec 31, 2019. A new template wasdeveloped by PES Tech Council and approved by AudCom. Peter Balma has volunteered to lead a TF onrevision of the TC and the WG P&P. Although the WG P&P is not due for revision, it has been suggestedthat both be done to ensure they are in alignment.

Page 27 of 54

The P&P is one of three main governing documents that comes from PES Tech Council and IEEE-SA. Itis sometimes called the Sponsor P&P, and it applies to Standards Development.

There is also an O&P, for Organization & Procedures, which supplements the P&P and applies toeverything else the Committee does. It covers: general operating procedures of the committee,subcommittees, and working groups; responsibilities of officers; membership issues; org chart; technicalpapers and presentations, etc.

The third governing document is the Working Group P&P.

WebsiteSusan McNelly, the present Webmaster is slowly working on a transition from the present non web basedweb updating program to a web based platform. IEEE has been requested to help with this transition. Noinformation has yet been provided by IEEE on a intial site format so that this transition can begin. Therehave been to meeting participants that have offered their expertise, but until the starting template isprovided by IEEE, nothing will likely progress. A web based updating platform will allow multiple peoplethe ability to make updates to spread the workload.

There will be considerable upfront work to make this transition, but afterwards, little effort will be requiredto maintain the site.

Interested individuals should contact Susan.

Respectfully submitted,

Susan J. McNellyChair, IEEE/PES Transformers Committee

March 2, 2018

5.0 VICE CHAIR’S REPORT – BRUCE FORSYTH

The Vice Chair’s Report was presented at the Monday General Session.

IEEE PES CALENDAR OF UPCOMING EVENTS

The following are upcoming PES sponsored conferences and committee meetings. Please check the PESwebsite at www.ieee-pes.org for further details, and additional events.

· 2018 IEEE PES Transmission and Distribution Conference and ExpositionApril 16 – 19, 2018, Denver, Colorado

· 2018 IEEE PES General MeetingAugust 5 – 9, 2018, Portland, Oregon

2018 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITIONApril 16 – 19, 2018, Denver, Colorado

Page 28 of 54

Paper Submittals

A listing of the papers submitted, and the status of each submission is shown in Table 1.

Accepted ................................. 9Rejected .................................. 4Total Submissions ................. 13

Table 1: T&D Conference Papers Submitted

Paper Title Status

18TD0042 Online Monitoring Data Cleaning of Transformer Considering Time SeriesCorrelation Accepted

18TD0085 Online Sequential Extreme Learning Machine for Partial Discharge PatternRecognition of Transformer Accepted

18TD0102 Newly Developed and Cost-Effective Submersible Dry-Type NetworkTransformers Accepted

18TD0107 Residual Magnetic Flux of Three-Phase Three-Leg Transformer for ControlledSwitching Accepted

18TD0133 Limiting Voltage Dips and Inrush Currents When Energizing PowerTransformers Accepted

18TD0167 Submersible Transformer Inspection Robot (STIR) - A Change of Paradigm Accepted

18TD0283 Ester-based Dielectric Liquid for Grid Resilience and EHV MobileTransformers Accepted

18TD0398 High temperature insulation systems: an option for resilient transformers Accepted

18TD0401 Monitoring Gas Generation in Transformers Accepted

18TD0048 Electric Substation Large Power Equipment Innovative and Cost EffectiveMethods for Repairing Oil and Gas Leaks Rejected

18TD0225 Bushing 101Design, Application, Field Issues, Solutions and New Technology Rejected

18TD0257 Understanding the Sympathetic Inrush Phenomenon in the Power Networkusing Transformer Explorer Rejected

18TD0448 765 KV BUSHING FLASHOVERS CASE STUDY Rejected

Panel Sessions

A listing of the panel applications submitted, and the status of each submission is shown in Table 2.

Accepted ................................. 2Rejected .................................. 1Total Submissions ................... 3

Page 29 of 54

Table 2: Panel Sessions

Title Duration Moderator Status

Keeping grids resilient – Transformer exchangewithin a few days and further options tomaximize network stability (along the entireenergy value chain)

4 hr. E. Schweiger Accepted

Improving grid stability with variable shuntreactors and phase shifters 2 hr. J McIver Accepted

Welcome to the future: sustainable urban energy 4 hr. J McIver Rejected

Poster Session Opportunity

PES Working Groups are invited to share their activities through poster presentations. Interested WGs needonly show up to the session with their printed poster (max size 48 in. by 48 in.).

IEEE PES GENERAL MEETINGAugust 5 – 9, 2018, Portland, Oregon

Paper Submittals

Paper reviews and accept/reject decisions were not yet final at the writing of this report.

Accepted ............................... 11Rejected .................................. 4Withdrawn by Author ............. 1Withdrawn by Admin.............. 4Total Submissions ................. 20

IEEE Transaction Papers ......... 2 (included in Accepted total)

Table 3: General Meeting Papers Submitted

Paper Title Recommendation

18PESGM0090 Prediction of Dissolved Gases Concentration in Transformer OilBased on KPCA_IFOA_GRNN Model Rejected

18PESGM0148 Power System Compensation Using a Power ElectronicsIntegrated Transformer

Accepted(Transaction

Paper)

18PESGM0213 A Rapid UV-Vis Spectrometry based Method for the Detection ofFurfural in Transformer Oil

Withdrawn byAdmin

18PESGM0240 Research on Detection and Maintenance Strategy for OperationalDefect of 110~500 kV Main Transformer Oil Temperature Gauge

Withdrawn byAdmin

Page 30 of 54

Paper Title Recommendation

18PESGM0323 Estimation of Design Parameters of Single-Phase DistributionTransformers from Terminal Measurements

Accepted(Transaction

Paper)

18PESGM0343 A robust method to detect the contents of methanol intransformers oil

Withdrawn byAdmin

18PESGM0580 A more accurate numerical method to calculate pressure rise dueto internal electrical faults in oil-filled power transformer tanks Accepted

18PESGM0778 Impact of Nanosecond Pulse Parameters on Online ImpulseFrequency Response Signature of a Power Transformer Rejected

18PESGM0814 Study on the Consumption Law of Metal Passivator Irgamet 39 inTransformer Oil

Withdrawn byAdmin

18PESGM0820 Study of Influence on Metal Passivator Effectiveness Rejected

18PESGM0854 Performance Evaluation of Thermally Stressed Alternative SolidDielectrics for Power Transformers Using Raman Spectroscopy

Withdrawn byAuthor

18PESGM0855 Study on the Consumption Law of Metal Passivator Irgamet 39 inTransformer Oil Accepted

18PESGM0924 Effectiveness of Using Simplified Methods to EstimateTransformer Loss of Life Accepted

18PESGM0985 Influence of RC snubbers on the Steepness of SwitchingTransients caused by Vacuum Circuit Breakers Accepted

18PESGM1173 Analysis of Vibration Signal for Power Transformer's On-Load TapChanger (OLTC) Condition Monitoring Accepted

18PESGM1233 Cascaded LC-AC transformer unidirectional DC/DC converter withhigh stepping ratio Accepted

18PESGM1289 Performance Evaluation of Thermally Stressed Solid Dielectricsfor Transformers Rejected

18PESGM1299 Analyzing Differences in Useful Life of Power Transformers acrossUtilities for Better Strategic Spares Management Accepted

18PESGM1516 Accurate Estimating Algorithm of Transfer Function forTransformer FRA Diagnosis Accepted

18PESGM2002 Vibration Monitoring of On-load Tap-changer by Resonance-based Sparse Signal Decomposition Accepted

IEEE TRANSACTIONS ON POWER DELIVERY TO DATE IN 2017

No report on Transactions was submitted from IEEE as of March 24, 2018.

Respectfully,

Page 31 of 54

Bruce ForsythVice ChairMarch 24, 2018

6.0 SECRETARY’S REPORT – ED TENYENHUIS

The Secretary’s Report was presented at the Monday General Session.

MEMBERSHIP REVIEW

The Committee welcomes and encourages active participants to become Members of the Committee.Requirements and application forms can be found in the Organization and Procedures (O&P) Manual,accessible on the Committee website. A link to the Membership Application form can be found on theTransformersCommittee.org homepage in the Committee Information Box. Subcommittee Chairs areencouraged to recommend new members and to communicate the process of attaining membership throughactive participation and contribution at the WG and SC level. New member applications may besubmitted to the Committee Secretary’s attention at any time. Applications will be collected for review andapproval in batches at each Administrative Subcommittee meeting.

New Committee Member Approvals

At the Fall 2017 Administrative Subcommittee meeting, twelve new committee member applications werereviewed. All twelve of the applications were approved. The new members are listed in the following table.

Name Affiliation Sponsor #1 Sponsor #2 Sponsor #3 MembershipCategory

Solomon Chiang The GundCompany

Sheldon KennedyInsulation Life SC

2 yr.

Tom PrevostWG PC57.162

3 yr.

Roger WicksWG P1276 &PC57.12.60

2.5 yr,

Producer

Luiz Chiem ABB Inc.

David WallachInsulating Fluids

SC10 Yr.

Claude BeaucheminWG PC57.104

5 yr.

Tom PrevostWG PC57.162

4 yr.Producer

Scott Digby Duke EnergyPeter Zhao

Bushings SC5 yr.

Gary HoffmanC57.12.10 Revision

2+ yr.

Shibao ZhangC57.19.01 Revision

5 yr.User

Marcos Ferreira Advisian –WorleyParsons

Group

Mike LauWG PC57.93

5 yr.

Jerry MurphyStandards SC

5 yr.

Craig ColopyWG 602142

3 yr.User

GeorgeFrimpong ABB Inc

Sheldon KennedyInsulation Life SC

10 yr.

Ali NaderianWG PC57.161

5 yr.

Tom PrevostWG PC57.162

4 yr.Producer

Page 32 of 54

Name Affiliation Sponsor #1 Sponsor #2 Sponsor #3 MembershipCategory

John Herron Raytech USAHakim Sahin

WG/TF C57.12.905 yr.

D. WallaceWG PC57.13.8

3 yr.

E. teNyenhuisPerf. Char. SC

5 yr.

GeneralInterest

John John VirginiaTransformer

Corp.

Phil HopkinsonWG P60076-16

4 yr.

Rogerio VerdolinWG PC57.105

2.5 yr.

Ajith VargheseDielectric Test SC

2+ yr.Producer

Kumar Mani Duke EnergyGary Hoffman

WG PC57.12.102 yr.

Ali NaderianWG PC57.161

2 yr.

Ajith VargheseDiectric Test SC

1.5 yrUser

Shankar Nambi BechtelCasey Ballard

WG PC57.12.012 yr.

Enrique BetancourtWG PC57.158

2 yr.

Joe WatsonPower Trans. SC

5 yr.User

Robert “Bud”Stinson

I GEStephen Shull

Dist. Trans. SC2 yr.

Craig ColopyWG PC57.15

3 yr.

Brian KlaponskiWG PC57.12.40

2.5 yr.Producer

Mike Thibault Pacific Gas andElectric

Al TrautWG C57.12.20

2 yr.

Ron StaharaWG C57.12.34

2 yr.

Dan MulkeyWG C57.12.28/etc.

Fall ’15 &16’/Spring16’

User

Joshua Verdell ERMCOStephen Shull

Dist. Trans. SC3 yr.

Alan TrautWG PC57.12.20

5 yr.

Ali GhafourianWG PC57.12.38

5 yr.Producer

New Member Applications

Eight new applications for Committee Membership have been received for consideration since the lastmeeting. The following table lists the names of the applicants and a summary of their supporting eligibilityinformation.

Name Affiliation Sponsor #1 Sponsor #2 Sponsor #3 MembershipCategory

Myron BellIEEE – YesPES – YesSA – Yes

Delta Star

Bill GriesackerPower Transformer

SC3 yr.

Tom PrevostWG PC57.162

1.5 yr.

Gary HoffmanC57.12.10 Revision

2+ yr.Producer

Jermaine ClontsIEEE – YesPES – YesSA – Yes

Power Partners

Dan MulkeySubmersible

Transformer SC2 yr

Alan TrautWG PC57.12.23

3 yr.

Patrick McShaneWG PC57.147

2 yr.Producer

Page 33 of 54

Name Affiliation Sponsor #1 Sponsor #2 Sponsor #3 MembershipCategory

James DorstenIEEE – YesPES – YesSA – Yes

Alabama PowerCompany

Dan MulkeySubmersible

Transformer SC2 yr

Brian KlaponskiWG C57.12.40

2 yr.

Mark FaulknerWG C57.12.44

2 yr.User

Hugo FloresIEEE – YesPES – YesSA – Yes

CG PowerSystems

E. teNyenhuisPerf. Char. SC

5 yr.

Enrique BetancourtWG PC57.158

2.5 yr.

Phil HopkinsonWG P60076-16

3 yr.Producer

Rakesh RathiIEEE – YesPES – YesSA – Yes

VirginiaTransformer

Ajith VargheseDielectric Test SC

2 yr.

Ramsis GirigsTF Audible Sound

2 yr.

Joe WatsonWG C57.148

2 yr.Producer

PugazhenthiSelvaraj

IEEE – YesPES – YesSA – Yes

VirginiaTransformer

Ajith VargheseDielectric Test SC

2 yr.

W. BinderWG PC57.125

3 yr.

Rogerio VerdolinWG PC57.120

2 yr.Producer

AlwynVanderWaltIEEE – YesPES – YesSA – Yes

Public ServiceCompany ofNew Mexico

Bill GriesackerPower Transformer

SC4 yr.

Mike LauWG PC57.93

4 yr.

Claude BeaucheminWG PC57.104

4 yr.User

David WalkerIEEE – YesPES – YesSA – Yes

MGMTransformer

Chuck JohnsonDry Transformer

SC3 yr

Casey BallardWG PC57.12.01

3 yr.

Sheldon KennedyWG C57.18.10

2 yr.Producer

These applications will be reviewed at the Spring 2018 Administrative Subcommittee meeting.

Association Management System (AMS) Database

The Transformers Committee AMS database of people currently has three general categories of participationin our activities. These are: Interested Individual, Active Participant, and Committee Member. Inaddition, the Committee Secretary maintains a list of Past Committee Members. Anyone can join the AMS123 system as the system is designed for self-registration. A new participant will automatically be assignedthe role of Interested Individual when they first sign up. It is the responsibility of each individual to keephis/her profile updated (except for the participant status). Based on the level of participation, the committeeadministrative staff will upgrade the participation status to “Active Participant” when appropriate. TheCommittee Member status however, can only be attained through a formal application with the sponsorshipof a minimum of three WG or SC chairmanships, at least one of which must be a SC Chair. Details of theapplication requirements and approval process by the Administrative Subcommittee are outlined in our O&Pmanual.

The following table contains a count of the participants grouped by the four general categories (CM totals donot include those requesting membership at this meeting).

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Membership Status F14 S15 F15 S16 F16 S17 F17 S18*

Interested Individual 1386 1362 1462 1471 1507 1554 1550 1552Interested Individual - IEEE Life

Member 10 9 11 11 11 11 11 13

Total Interested Individuals 1396 1371 1473 1482 1520 1565 1561 1565

Active Participant 201 205 240 242 258 275 302 321Active Participant - IEEE Life

Member 6 6 7 5 5 5 5 5

Total Active Participants 207 211 247 247 263 280 307 326

Committee Member 170 173 161 172 175 180 169 175Committee Member – Emeritus 10 10 10 9 9 9 9 10Committee Member - IEEE Life

Member 20 22 23 25 27 29 28 33

Total Committee Members 200 205 194 206 211 218 206 216Past Committee Member 18 19 28 32 31 30 42 38

Past Committee Member - IEEE LifeMember 6 7 6 5 5 5 7 6

Total Past Committee Members 24 26 34 37 36 35 49 44

TOTAL IN AMS DATABASE 1827 1813 1948 1972 2028 2098 2123 2151*S18 data is as of March 16, 2018

COMMITTEE, SUBCOMMITTEES, AND WORKING GROUP ROSTERS

In order to provide indemnification to working group and subcommittee members it is crucial thatmembership lists be maintained. The AM system has these functions built-in to ease these administrationtasks. It is important that each subcommittee and working group chair keep the rosters updated so that thisinformation can be provided to the IEEE SA.

Past Committee Member2%

Committee Member10%

Active Participants14%

Interested Individual74%

MEMBERSHIP SUMMARY

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A similar main committee roster has also been developed to track attendance for the Main CommitteeGeneral Session meeting on Monday & Thursday. The data will be used to update participant’s membershipprofile.

IEEE/PES AND IEEE/SA MEMBERSHIP REQUIREMENTS

As a reminder, all members of the Transformers Committee must also be members in good standing of thePower & Energy Society (IEEE/PES) and the Standards Association (IEEE/SA).

WG Chairs must be members in good standing of the sponsoring subcommittee SC as well as the Power &Energy Society (IEEE/PES) and the Standards Association (IEEE/SA).

COMMITTEE MEMBERSHIP MAINTENANCE

An attendance audit was performed in mid-March 2018. As a result of the audit, the following member whohas missed 4 or more Committee meetings in a row was changed from Committee Member to PastCommittee Member:

Raj Ahuja

Josh Herz has been changed to Past Committee Member per his request (he has retired).

Note that Past Committee Members can be reinstated to Committee Members if their status changes and theyare able to regularly participate within two years of being changed to Past Committee Member.

ESSENTIAL PATENT CLAIMS

All registrants were asked to agree with the following statement:

“I have read the Patent Claim notice on the following webpage, and I understand that if I am awareof any Essential Patent Claim related to issues being discussed or considered for inclusion instandards being developed by one or more Working Groups of the Transformers Committee, it is myresponsibility to inform the Chair of the Working Group affected by such claim.”

Working Group Chairs are asked to make a Call for Essential Patent at the beginning of each meeting and torecord the results in the meeting minutes.

AFFILIATION

According to the IEEE Standards Board Bylaws, there is a requirement that participants of an IEEE meetingdisclose their employer and affiliation. Consultants must state if they are sponsored or not. It is notsufficient to simply announce "My name is John Smith, and I'm a consultant." If a consultant is sponsoredby a client, it must be disclosed. If the consultant does not have a sponsor, the proper introduction issomething such as “My name is John Smith, I am a consultant, and I represent myself at this meeting.”

MEETING MINUTES

The minutes of the Fall 2017 meeting have been posted to the committee website.

Subcommittee Chairs are asked to submit their respective subcommittee meeting minutes for the NewOrleans meeting to the Committee Secretary no later May 10, 2018, which is 6 weeks after the completionof the meeting. It is strongly recommended that meeting minutes be prepared soon after the meeting whilethe activities are still fresh in members’ minds. Doing so will help to ensure the activities and decisionsmade during the meeting are accurately reflected in the minutes.

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Subcommittee meeting minutes should be submitted via e-mail to the Committee Secretary, Ed teNyenhuis[edt@ieee.org], who will forward them on to the webmaster for posting on the Committee website. Thesubmittal file should be saved as a Word document formatted similar to this document. Attendance,indication of quorum, names of members making any motion, seconding any motion, and the result of anyvotes (affirmative and negative count) for each SC, WG, and TF meeting shall be included in all minutes.

Respectfully submitted,

Ed teNyenhuisSecretaryIEEE/PES Transformers CommitteeMarch 16, 2018

7.0 TREASURER’S REPORT – PAUL BOMAN

The Treasurer’s Report was presented at the Monday General Session.

March 19, 2018

To: Susan McNelly, ChairIEEE PES Transformers Committee

RE: IEEE PES Transformers Committee Treasurer's Report,Spring 2018 Meeting(for reporting period 09/01/2017 to 01/31/2018)

Dear Susan,

The finances of the Committee are in good condition. As of February 1st (end of this reporting period),the balance in our account was $94,320.22.

FYI: January 31st was essentially a "snap-shot in time" after all income & expenses were resolved from theprevious Fall 2017 Meeting in Louisville, and before we started spending significant funds for the Spring2018 Meeting in Pittsburgh.

We purchased two (2) video meeting projectors during this reporting period to minimize hotel equipmentrental expenses.

See attached summary of the balance of this reporting period, and the previous periods. Letme know if you have any questions or concerns.Sincerely,

Paul E. Boman, Treasurer IEEE PES Transformers Committee

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8.0 RECOGNITION AND AWARDS REPORT – STEPHEN ANTOSZ

The Recognition and Awards Report was presented at the Monday General Session.

IN MEMORIAM

Stan Lindgren

Stanley (Stan) Roland Lindgren passed away peacefully on December 17,2017. At the age of 15, Stan had his first encounter with the power ofelectricity, when a lightning bolt to a nearby tree threw him backwards. Hisresultant love of lightning might have motivated him, as he went on to graduatefrom Kansas State College in early 1950 with a Bachelor of Science inElectrical Engineering. Stan began his career with Allis Chalmers (A-C) inWest Allis, Wisconsin in 1950 as part of their Graduate Training Course andsoon was working in the transformer fabrication shop doing hands-on work,stacking cores, brazing leads, taping joints and building terminal boards. Hecredited much of his power transformer knowledge to his mentor, L.S.Woodruff (Woodie) who designed A-C’s first transformer in 1903. Stan wenton to work for RTE in Waukesha, Wisconsin; Paragon AMF in Manitowoc,

Wisconsin; EPRI in Palo Alto, California and concluded his 62-year career in 2012 while working forServeron Corp. in Portland, Oregon. He was a lifetime member of IEEE and was a recognized powertransformer expert. Stan was preceded in death by his wife of 60 years Caroline. He leaves behind two sons,Eric and Carl, and one daughter, Joanne, and their families.

Sam Mehta

Shirish “Sam” Mehta passed away unexpectedly on January 30, 2018 whiletraveling in India. Sam had many different roles in his 44-year tenure withSPX Waukesha and its predecessors that began in 1970. Sam was the VP ofResearch and Technology when he retired and continued to work in theindustry after retirement. Sam was always smiling and willing to take time toteach anyone that wanted to learn. According to Tom Prevost: “Sam was anold-school "Transformer Guy" who lived his life in (and for) the transformerindustry. He was a mentor and a friend to me and I'm sure many others."

Sam got an award for Outstanding Paper in Fall 2017, as a co-author.Temperature Rise Tests on a Forced-Oil-Air Cooled (FOA) (OFAF) CoreForm Transformer, Including Loading Beyond Nameplate by M. V. Thaden,

Subhash Tuli, Sam Mehta, and R. L. Grubb

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Frank Heinrichs

Frank W. Heinrichs Jr., 88, of Gibsonia, PA died Tuesday, Aug. 16, 2016. Frankwas a graduate of Carnegie Technical Institute (Carnegie Mellon University). Hedeveloped his transformer expertise with McGraw Edison/Cooper Industries atCanonsburg, PA, where he pursued his career as an Electrical Engineer, retiring asChief Engineer and was involved in numerous patents. Frank was an active memberof the transformers committee for many years, and in particular the Insulating FluidsSC where he was Chair of C57.104 and C57.130 WGs. Frank was a U.S. MarineCorp Veteran, and enjoyed the outdoors. Frank was active in his church, he wasinvolved with Right to Life, Men's Group, and was a lector, Eucharistic minister andSunday school teacher. A true renaissance man, he loved reading, sculpture, painting,being outdoors with nature, golf, fishing, playing bridge and spending time at theocean. Most of all, he loved being with his loving family and dear grandchildren.

GENERAL SERVICE AWARDS· Meeting Host – Dennis Blake & Team at Pennsylvania Transformer Technologies· Outgoing Committee Chair – Stephen Antosz· Outgoing Committee Treasurer – Greg Anderson· Outgoing Subcommittee Chair & Officer – Don Platts, Recognition & Awards SC· Outgoing Subcommittee Chair – Greg Anderson, Meetings Planning SC· Outgoing Subcommittee Chair – Bill Bartley, Standards SC· Outgoing Subcommittee Chair – Bruce Forsyth, Insulation Life SC· Outgoing Subcommittee Chair – Ed teNyenhuis, PerformanceCharacteristics· Outgoing Subcommittee Chair – Joe Watson, Power Transformers SC

NEW MEMBERS OF THE TRANSFORMERS COMMITTEE

The Transformers Committee welcomes 8 new committee members. Each of the following people werepresented with a membership certificate:

· Myron Bell Delta Star· Jermaine Clonts Power Partners· James Dorsten Alabama Power· Hugo Flores WEG Transformers USA· Rakesh Rathi Virginia Transformer· Pugazhenthi Selvaraj Virginia Transformer· Alwyn VanderWalt Public Service Company of New Mexico· David Walker MGM Transformer Company

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DISTINGUISHED SERVICE AWARD

For long-term leadership, service, and technical contributions to the Transformers Committee.

Tom Prevost

OUTSTANDING SERVICE AWARDS, FOUR TOTAL

For long-term commitment, dedication, and contributions to the Transformers Committee.

James Harlow

Fredi Jakob

Kent Miller

Harold Moore

IEEE-SA STANDARDS MEDALLION

For major contributions to the development of standards, including leadership in standardization of newtechnologies, assuring achievement of standards development goals, identifying opportunities to better servethe needs of standards users or other such contributions viewed as deserving of this award.

Charles Johnson

Bertrand Poulin

IEEE-SA STANDARDS EDUCATION AWARD

For effectively integrating power systems and transformer standards into academic and professionaldevelopment programs, support for education about standards and standards setting process, promotion of theimportance of standards in meeting technical, economic, environmental, political and societal challenges, andfor his active encouragement of IEEE student membership.

Hemchandra Shertukde

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IEEE-SA INTERNATIONAL AWARD

For selfless dedication to worldwide Step Voltage Regulator and On Load Tap Changer standards as IEEE,IEC, and NBR (Brazilian) standards. The IEEE-SA International Award is presented to an IEEE-SAindividual member who has made an extraordinary contribution to establishing the IEEE-SA as a world-classleader in standardization.

Craig Colopy

IEEE-SA LIFETIME ACHIEVEMENT AWARD

This award is presented annually to an individual having a 15+ year commitment to standards developmentwithin IEEE and other national and international standards activities who provided significant technicalcontributions to a standards committee or in their field of interest.

Phil Hopkinson

WORKING GROUP AWARDS

In addition to the Committee Awards above, the IEEE SA SB presents its own Award to the WG Chair uponpublication of a new or revised document and offers the WG Chair the opportunity to nominate significantcontributors to the project for an IEEE SA SB Certificate of Appreciation.

We have had a number of working groups that have completed their projects, their standardsdocuments have been published, but IEEE SA has been slow to recognize them by awarding theSA plaques and Certificates of Appreciation. At our fall meeting in Louisville, recognition wasagain noted for:

C57.12.20 WG Chair - Alan Traut. Standard for Overhead-Type Distribution Transformers500 kVA and Smaller: High Voltage, 34 500 V and Below; Low Voltage, 7970/13 800Y Vand Below

C57.106 WG Chair - Bob Rasor. Guide for Acceptance and Maintenance of InsulatingMineral Oil in Electrical Equipment

C57.120 WG Chair - Roger Verdolin. Guide for Loss Evaluation of Distribution and PowerTransformers and Reactors

60076-57-129 WG Chair - Ulf Radbrandt. Standard for General Requirements and TestCode for Oil-Immersed HVDC Converter Transformer

This one was already recognized at our Fall 2017 meeting, but apparently they are stillwaiting for their actual awards

C57.12.58 WG Chair - Roger Wicks. Guide for Conducting a Transient Voltage Analysis ofa Dry-Type Transformer Coil

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WG’s eligible for possible future recognition. (I need to investigate.)

C57.12.36 WG Chair Jerry Murphy. IEEE Standard Requirements for Liquid-Immersed DistributionSubstation Transformers. Published in 2017.

OTHER IEEE PES AWARDS (AVAILABLE UPON APPLICATION TO PES)

The IEEE PES recognizes important technical, educational and service contributions through the conferralof numerous awards. The listing below highlights the various other awards that are available through theIEEE PES organization.

IEEE PES Award for Excellence in Power Distribution EngineeringNominations due by October 1

IEEE PES IAS A.P. Seethapathy Rural Electrification Excellence AwardNominations due by February 1st

IEEE PES Charles Concordia Power System Engineering AwardNominations due by February 29th

IEEE PES Cyril Veinott Electromechanical Energy Conversion AwardNominations due by February 1st

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IEEE PES Douglas M. Staszesky Distribution Automation AwardNominations due by January 31st

IEEE PES Lifetime Achievement AwardNominations due by February 1st

IEEE PES Leadership in Power AwardNominations due by February 1st

IEEE PES Meritorious Service AwardNominations due January 31st

IEEE PES Nari Hingorani Custom Power AwardNominations due by January 31st

IEEE PES Nari Hingorani FACTS AwardNominations due by January 31st

IEEE PES Outstanding Chapter Award

IEEE PES Outstanding Power Engineering Educator AwardNominations due by January 30th

IEEE PES Outstanding Young Engineer AwardNominations due by February 1st

IEEE PES Prabha S. Kundur Power System Dynamics and Control AwardNominations due by January 31st -

IEEE Power & Energy Society Ramakumar Family Renewable Energy Excellence AwardNominations due by January 31st

IEEE PES Robert P. Noberini Distinguished Contributions to Engineering Professionalism AwardNominations due by February 1st

IEEE PES G. Ray Ekenstam Memorial ScholarshipNominations due by June 30th

IEEE PES Scholarship Plus InitiativeApplications due by June 30th

IEEE PES Roy Billinton Power System Reliability AwardNominations due by February 1st

IEEE PES Uno Lamm High Voltage Direct Current AwardNominations due by November 30th

IEEE PES Wanda Reder Pioneer in Power AwardNominations due by January 15th

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IEEE PES CSEE Yu-Hsiu Ku Electrical Engineering AwardNominations due by January 31st

IEEE PES Working Group Recognition AwardsTo recognize “the most outstanding and timely publications” by a PES Working Group (or Committee orSubcommittee) from among the nominations. The PES Recognition Award is divided into twocategories: 1) for technical reports; 2) standards and guides. Each Technical Council Committee maynominate one report from each category, published by IEEE, during the previous three year period.”This award consists of a plaque which will be presented to the Working Group Chair at the PES SummerMeeting Awards Luncheon. A framed certificate will be presented to each Working Group member at adesignated meeting of the parent Technical Committee.

Respectfully submitted,

Stephen AntoszChair, Recognition & Awards SubcommitteeIEEE PES Transformers Committee

March 25, 2018

9.0 ADMINISTRATIVE SUBCOMMITTEE MEETING REPORT

INTRODUCTION OF MEMBERS AND GUESTS

The Chair called the meeting to order and asked attendees to introduce themselves and their affiliation.Consultants were asked to identify the company they were representing if they were not representing theirown consulting interest. Introductions were made by members and guests.

Members and Guests Present:Chair ..............................................................................................................Susan McNellyVice Chair ......................................................................................................Bruce ForsythSecretary ........................................................................................................Ed teNyenhuisTreasurer .......................................................................................................Paul BomanStandards Coordinator ....................................................................................Jim GrahamAwards/Past Chair..........................................................................................Stephen AntoszBushings .......................................................................................................Peter ZhaoDielectric Tests .............................................................................................Ajith VargheseDistribution Transformers .............................................................................Stephen ShullDry Type Transformers .................................................................................Chuck JohnsonHVDC Converter Transformers & Reactors ...................................................Michael SharpInstrument Transformers ...............................................................................Ross McTaggart (absent)Insulating Fluids ............................................................................................David WallachInsulation Life ...............................................................................................Sheldon KennedyPerformance Characteristics ..........................................................................Craig StiegemeierPower Transformers ......................................................................................Bill Griesacker

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Standards .......................................................................................................Jerry MurphyUnderground Transformers & Network Protectors .........................................Dan MulkeyGuests: Malia Zaman, Erin Spiewak, Matt Ceglia, Peter Balma, Lin Wang (by phone), Wang Haijun, Xiao

Yao, Yang Xu, Deng Jun

APPROVAL OF PREVIOUS MEETING MINUTES

The Chair asked for comments of the minutes from the Fall 2017 Administrative Subcommittee meeting. Amotion to approve the minutes was given by Ajith Varghese (seconded by Dave Wallach). There were nocomments and no objections to unanimous approval, therefore the minutes were approved.

ADDITIONS TO AND/OR APPROVAL OF THE AGENDA

The Chair noted a new item would be added under new business to the preliminary agenda that waspreviously distributed and that the meeting planning item would be skipped. A motion to approve therevised agenda was given by Steve Shull (seconded by Jerry Murphy) and there were no objections tounanimous approval of the revised agenda, therefore the following agenda was approved.

Approved Agenda:1. Introduction of Members and Guests (:05)........................................................................................ All2. Approval of Fall 2017 Minutes (:03) ................................................................................. Sue McNelly3. Additions to and/or Approval of the Agenda (:02) ............................................................. Sue McNelly4. Chair’s Report (:10) .......................................................................................................... Sue McNelly5. Vice Chair’s Report (:05) ................................................................................................ Bruce Forsyth6. Secretary’s Report & New Committee Membership Approval (:15)................................ Ed teNyenhuis7. Treasurer’s Report (:05) ..................................................................................................... Paul Boman

Time Check (1:45 pm)

8. Recognition & Awards Report (:05) .............................................................................. Stephen Antosz9. Standards Report (:20) ....................................................................................................... Jim Graham10. IEEE Staff Update (:10) ....................................................................................................Malia Zaman11. (Skipped) Meeting Planning (:10) ................................................................................ Tammy Behrens

11.1. Pittsburgh Meeting Update11.2. Future Meetings

Time Check (2:30 pm) & Break (15 min)

12. Old Business12.1. 100 Year Anniversary of Transformers Committee (:05) ............................................. P. Balma12.2. Update on China Projects (:05) ............................................................................ Sue McNelly

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13. New Business13.1. Presentation for Guide for the Frequency Domain Spectroscopy Measurement of Bushings

(:10) ……………………………………………………………………………….. SueMcNelly

13.2. PAR Proposal on Lead Exits from CSEE (:05)…………………………...……... SueMcNelly

13.3. Updated Transformers Committee P&P Manual (:10)…………………………... SueMcNelly

13.4. Executive Session …………………………………..……………………...……... SueMcNelly

Time Check – 3:35 PM

14. Subcommittee Reports – Roundtable (not intended to indicate order of reporting)14.1. Bushings (:03) ......................................................................................................... Peter Zhao14.2. Dielectric Test (:03) ........................................................................................... Ajith Varghese14.3. Distribution Transformers (:03) ...............................................................................Steve Shull14.4. Dry Type Transformers (:03) ............................................................................. Chuck Johnson14.5. HVDC (:03) ........................................................................................................... Mike Sharp14.6. Instrument Transformers (:03) ......................................................................... Ross McTaggart14.7. Insulating Fluids (:03) ....................................................................................... David Wallach14.8. Insulation Life (:03) ....................................................................................... Sheldon Kennedy14.9. Performance Characteristics (:03) ................................................................. Craig Stiegemeier14.10. Power Transformers (:03) .................................................................................. Bill Griesacker14.11. Standards (:03) .................................................................................................... Jerry Murphy14.12. Subsurface Transformers & Network Protectors (:03) ............................................ Dan Mulkey

15. Adjourn

CHAIR’S REPORT – SUE MCNELLY

Refer to Section 4.0 of the Main Minutes for a complete “Chair’s Report.”

Highlights:

· New officers for 2018-19 rotation· Tammy Behrens has taken over Transformer Committee Meeting Planning Subcommittee due to

resignation of Greg Anderson· AMS cost will soon be covered by IEEE PES· IEEE will no longer adopt IEC standards

VICE CHAIR’S REPORT – BRUCE FORSYTH

Refer to Section 5.0 of the Main Minutes for a complete “Vice Chair’s Report.”

Highlights:

· Upcoming Meetings:o T&D show in Denver, CO on April 16-19, 2018o General Meeting in Portland, OR on August 5-9, 2018

· T& D Paper Summary - 13 papers submitted and 9 were accepted

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· Panel Sessions:o 3 proposals submitted, but we can only have one 4-hour and one 2-hour session, so one of

the 4-hour sessions will likely be rejected.· GM Papers – 20 papers were submitted and 11 were accepted· Transaction Papers: no report

SECRETARY’S REPORT – ED TENYENHUIS

Refer to Section 6.0 of the Main Minutes for a complete “Secretary’s Report.”

Highlights:

· There were 8 applications for Committee Membership since the last meeting. A motion was madeby David Wallace (seconded by Chuck Johnson) to approve all 8 applications. The motion wasapproved unanimously.

· SC Chairs are asked to submit their minutes not later than May 10, 2018.

There was discussion if we need to continue to maintain the interested & active individual membershipcriteria in the AMS.

There was a requested action for the Secretary to determine if the AMS system can generate a report (like thePie Chart in the report) to show the participating attendees.

TREASURER’S REPORT – PAUL BOMAN

Refer to Section 7.0 of the Main Minutes for a complete “Treasurer’s Report.”

Highlights:

· The transition to a new treasurer has gone well and the Committee funds & books are in good shape.

RECOGNITION & AWARDS REPORT – STEPHEN ANTOSZ

Refer to Section 8.0 of the Main Minutes for a complete “Recognition & Award’s Report.”

STANDARDS REPORT – JIM GRAHAM

Refer to Section 10.0 of the Main Minutes for a complete “Standards Report.”

IEEE STAFF UPDATE – MALIA ZAMAN

Refer to Annex 1 for the full PowerPoint presentation.

Highlights:

· It is not allowed to record the meeting or take pictures of the slides during a WG meeting. Theofficers of the working group can do this for the purpose of taking minutes but they must advise theWG of this and destroy it after the minutes are completed.

MEETING PLANNING REPORT – TAMMY BEHRENS

No report was given.

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OLD BUSINESS

No reports on this due to shortness of time.

NEW BUSINESS

Presentation for Guide for the Frequency Domain Spectroscopy Measurement ofBushings

A presentation was given by Wang Haijun, Xiao Yao, Yang Xu and Deng Jun. Refer to Annex 2 for the fullPowerPoint presentation.

This would be an entity project. They would report 1 per year at the Transformer Committee meeting.

The Adcom must decide by May 4 if they wish to be the sponsor of this project.

PAR Proposal on Lead Exits from CSEE

A skype presentation was given by Lin Wang. Refer to Annex 3 for the full presentation.

Similar to the above, Adcom must decide if they wish to support this project as a sponsor.

Updated Transformers Committee P&P Manual

A Task Force led by Bruce Forsythe will work on this. The members include Jim Graham, Steve Shull,Stephen Antosz, Chuck Johnson, Peter Balma and Kris Zibert.

Executive Session

There was an executive session (Adcom members only) held.

SUBCOMMITTEE REPORTS

There was insufficient time for SC reports.

ADJOURNMENT

The meeting was adjourned at 16.35 PM.

Submitted by:

Ed teNyenhuis,Secretary, Transformers Committee

March 25, 2018

Attachments (3): Annex 1 – IEEE Staff Update PresentationAnnex 2 – Guide for the Frequency Domain Spectroscopy Measurement of BushingsAnnex 3 – PAR Proposal on Lead Exits from CSEE

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10.0 STANDARDS REPORT – JIM GRAHAM

The Standard Report was presented at the Monday General Session.

The semi-annual Standards Report is included as Appendix 2.

11.0 LIAISON REPORTS

CIGRE – RAJ AHUJA

Raj Ahuja was not present and did not make a presentation. Craig Swinderman prepared a presentationwhich is shown in Appendix 4.

IEC TC-14 – PHIL HOPKINSON

Phil Hopkinson presented an overview of TC14 activities. His presentation is available in Appendix 3.

STANDARDS COORDINATING COMMITTEE NO. 18 (NFPA/NEC) – DAVID BRENDER

See Appendix 5.

STANDARDS COORDINATING COMMITTEE NO. 4 (ELECTRICAL INSULATION) – EVANNE WANG

Standards Coordinating Committee 04 oversees development of standards for Electrical Insulation thatspan the scope of multiple Technical Committees and Societies (e.g., Dielectric and Electrical Insulation,and Power Engineering) within IEEE.

1. Scope:

· To formulate guiding principles for the evaluation of insulation materials and systems for electricaland electronic applications.

· To formulate principles for the identification of insulation materials and systems based on functionaltests and/or experience.

· To coordinate the preparation of standards for functional test programs and diagnostic methods forthe evaluation of insulation materials and systems.

2. Standards:· IEEE 1-2000 (R2011) Recommended Practice – General Temperature Limits in the Rating of

Electrical Equipment and for the Evaluation of Electrical Insulation· IEEE 98-2016 Standard for the Preparation of Test Procedures for the Thermal Evaluation of Solid

Electrical Insulating Materials· IEEE 99-2008 Recommended Practice for the Preparation of Test Procedures for the Thermal

Evaluation of Insulation Systems for Electrical Equipment

3. CURRENT ACTIVITIES:3.1. IEEE 99 –PAR expires Dec 2020. Completion of first Draft in progress with goal of completion for

balloting by mid-year to in order to meet the document expiration date of December 31, 2018.

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· IEEE 1 –Review of document has been initiated within the subcommittee for determining the scopeof work for the next revision. Soliciting volunteers for review and revision of this standard whichexpires 12/31/21.

For those interested in joining SCC04 or WG for revision of IEEE 1, please contact the Chairperson, EvanneWang: evanne.wang@dupont.com, or Paulette Payne Powell: papayne@ieee.org

Respectfully submitted,

Evanne Wang

12.0 HOT TOPICS FOR THE UPCOMING WEEK

The Subcommittee Chairs gave a very brief update on topics of special importance being addressed duringthe week.

13.0 OPENING SESSION ADJOURNMENT

The meeting adjourned at 9:15 AM.

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Thursday Closing Session

14.0 CHAIR’S REMARKS AND ANNOUNCEMENTS

The Chair called the meeting to order at 11:00 AM.

15.0 MEETINGS PLANNING SC MINUTES & REPORT – TAMMY BEHRENS

See Appendix 6.

16.0 REPORTS FROM TECHNICAL SUBCOMMITTEES (DECISIONS MADE DURING THE

WEEK)

Reports from each Technical SC were presented. The complete minutes for each SC meeting are included infull in the attached Annexes.

DIELECTRIC TEST SC (AJITH VARGHESE)

See unapproved minutes in the Annex.

DISTRIBUTION TRANSFORMERS SC (STEVE SHULL)

See unapproved minutes in the Annex.

DRY TYPE TRANSFORMERS SC (CHARLES JOHNSON, PRESENTED BY CASEY BALLARD)

See unapproved minutes in the Annex.

C57.12.58 Guide for transient analysis has been approved and published

Dry-Type SC voted in favor of the motion to move the latest draft of PC57.12.51 product guide to editorialreview to be followed by SA-balloting.

A motion was made to [administratively] withdraw IEEE 259 LV thermal aging. The motion was approvedby the SC members. Dave Stankes will coordinate the process with Malia and Jim Graham

C57.16 air core reactors, C57.12.01 general requirements C57.12.91 test code, C57.12.60 MV thermal aging,and C57.124 PD guide are on schedule.

HVDC CONVERTER TRANSFORMERS SC (MIKE SHARP)

See unapproved minutes in the Annex.

INSTRUMENT TRANSFORMERS SC (ROSS MCTAGGART)

See unapproved minutes in the Annex.

INSULATING FLUIDS SC (DAVID WALLACH)

See unapproved minutes in the Annex.

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INSULATION LIFE SC (SHELDON KENNEDY)

See unapproved minutes in the Annex.

PC57.162 Moisture in Insulation - Tom Prevost

Task forces half complete· IEEE P-1276 application of high- temperature materials. Roger Wicks· Will survey draft to WG in two weeks.· Close to balloting to IEEE.

PC57.119 overload temperature rise tests - Gael Kennedy - Approved and sent to revcom for April 26meeting

PC57.91 loading guide - David Wallach - Early work, no draft yet

PC57.165 temperature measurements - Phil McClure - Early work , no draft yet

Three task forces approved to apply for PAR’s· IEEE 1538 maximum winding temperature rise. Don Platts· C57.100 thermal evaluation-Roger Wicks· C57.154 high temperature insulation systems. Rick Marek

PERFORMANCE CHARACTERISTICS SC (CRAIG L STIEGEMEIER)

See unapproved minutes in the Annex.

· At present there are 16 active WG/TF’s in PCS· 2018 PAR’s – no issues

o P60076-16 IEEE/IEC Wind Turbine Transformers Working out changes based on IECfeedback since it’s a dual IEEE/IEC standard

o C57.158 Tertiary/Stabilization Windings Completeo C57.110 Non-sinusoidal Load Currents Completeo C57.21 Shunt Reactors Good shape, will file a 2 year PAR

extension in May· 2019 PAR’s - no issues

o C57.105 3-ph Transf. Connections Approved draft in review, PSCapproving going to sponsor ballot

o C57.109 Through-Fault-Current Duration In ballot – resolving issues· 2020 PAR’s – working on draft

o C57.164 Short Circuit Withstand Guide Review continues. It was agreedthat 1.0 per-unit of nominal system voltage should be used versus 1.05 that was in theprevious draft, unless specified otherwise.

o C57.18.10 Semiconductor Rectifier Transformers· 2021 PAR’s – in process and no issues

o C57.142 - Transient Guide Work continues,membership is reviewing draft 4

o C57.32A – Neutral Grounding Devices amendment TF submitted to PCS for balloto C57.123 – Loss Measurement Guide Results of a survey were reviewed

and draft text for review in Jacksonville will be prepared before the meeting. The Chair is

Page 53 of 54

ensuring communication with IEC 60076-19 on loss uncertainty to confirm C57.123 is insync with the content in the IEC guide.

· The TF for Audible Sound Revision to Test Code C57.12.90 reviewedo Editorial comments from the 2nd survey for revisions to Table 17 and Annex C in C57.12.00

were incorporated into the TF’s recommendationso Review the full minutes for details on 5 topics that have lingered from previous meetings.o The topic of including fan noise in load noise rather than no load noise will be reviewed in

the Jacksonville Fall· TF for PCS Revisions to Test Code C57.12.90

o The TF has agreed to keep the voltage and current functional test proposalo The TF will have meetings between now and the fall to finalize sections 8.7 and 9.6 and send

out for a vote before the fall meetingo The TF reviewed the winding resistance test requirement on wye connection transformers

with neutral bushing brought out that verifies the neutral connection.o It was agreed to pass on a recommendation to update Section 5.4.1 to state: “In addition, in

order to verify neutral connection, when there is a neutral bushing brought out, at least oneterminal-to-neutral measurement must be made and reported at the neutral position”

o This helps clear up confusion over whether terminal to terminal or terminal to neutralresistance reading should be reported.

· TF for PCS Revisions to C57.12.00o TF is still working to determine if they had a quorumo The TF determined that there is not a need to change the present working relating to the

definition of short circuit power on multi-winding transformers. These was discussionrelated to the fault contribution from all un-faulted terminals, if not otherwise specified bycustomers.

· TF to investigate need for OLTC testing in IEEE standardso Determined that a guide is needed. A motion to create a PAR was tabled during the meeting,

giving the TF time to work out details of submitting a PAR at the Jacksonville meeting.During that meeting they will develop a title, scope and purpose for the standard.

· TF to investigate the need guidance when testing with different oil typeso After a technical overview, it was concluded that there is sufficient design margin to account

for residual mineral oil slightly affecting the dielectric and thermal properties of the naturalester oil, but that above 230kV it is more critical that the same oil be used for factory testingas used in service

o A first motion to revise the standards to say that the insulating liquid used for service mustalso be used for factory testing did not pass. A second softer motion did pass. The motionwas “Revise the standards to say it is recommended that the insulating liquid used for servicealso be used for factory testing. In the case it is agreed by the user and manufacturer to nottest with the same liquid type, it should be supported by calculation or experience”

o PCS agreed to support passing this recommendation on to the TF providing continuousrevision to C57.12.90 for implementation

· New businesso Will open up a PAR on C57.149-2012, the SFRA test guide, as it will expire in 2022. Chuck

Sweetser volunteered to be the chair, and he’s selected Poorvi Patel as Vice Chairo Brief review of core gassing phenomena by Phil Hopkinson, as already reported in other

SC’s· Chair introduced Rogerio Verdolin as the SC’s new Secretary, as Sanjib Som has moved into the

Vice Chair’s role vacated by the new PCS chair

Page 54 of 54

POWER TRANSFORMERS SC (BILL GRIESACKER)

See unapproved minutes in the Annex.

STANDARDS SC (JERRY MURPHY)

See unapproved minutes in the Annex.

UNDERGROUND TRANSFORMERS & NETWORK PROTECTORS SC (DAN MULKEY)

See unapproved minutes in the Annex.

BUSHINGS SC (PETER ZHAO)

See unapproved minutes in the Annex.

17.0 REPORTS FROM STANDARDS SUBCOMMITTEE AND STANDARDS (ISSUES FROM

THE WEEK)

Jim Graham will ask the SC Chairs to send the leader list so that the organization list can be updated.

Will do a training session on the operation of a Working Group on a Tuesday morning for new members.

18.0 NEW BUSINESS

No other new business was raised.

19.0 CLOSING SESSION ADJOURNMENT

The meeting was adjourned at 12:00 PM.

APPENDIX 1

Meeting Schedule

 IEEE PES TRANSFORMERS COMMITTEE 2/11/2018

THURSDAY, MARCH 22

ACTIVITY TRACK MTG CHAIR STATUS ROOM (FLOOR)

8:00 AM –  5:00 PM IEC MT 60076‐4 Impulse Test Guide ++ T. Hochanh Bedford (17)

FRIDAY, MARCH 23

ACTIVITY TRACK MTG CHAIR STATUS ROOM (FLOOR)

8:00 AM –  5:00 PM IEC MT 60076‐4 Impulse Test Guide ++ T. Hochanh Bedford (17)

SATURDAY, MARCH 24

ACTIVITY TRACK MTG CHAIR STATUS ROOM (FLOOR)

6:15 PM –  ??? Early Bird Event:  Tequila Cowboy's Little Red Corvette Social

SUNDAY, MARCH 25

ACTIVITY TRACK MTG CHAIR STATUS ROOM (FLOOR)

9:00 AM –  1:30 PM Technical Tour:  Pennsylvania Transf. Technology, Inc. Tech Tour

1:00 PM –  5:30 PM Meeting Registration Registration (17)

1:00 PM –  4:30 PM Administrative Subcommittee 

   – Closed Meeting, by invitation only

Admin S. McNelly Monongahela (17)

2:00 PM –  5:00 PM NEMA Transformers

   – Closed Meeting, by invitation only

++ J. Caskey Allegheny (17)

5:00 PM –  9:30 PM 100 Year Celebration Reception & Dinner Urban/Grand Ballroom (17)

No Registration and no Meetings, Technical Tours, or Spouse/Companion Tours Planned

No Spouse/Companion Tours Planned

SPRING 2018 MEETING: MARCH 25  TO  MARCH 29Omni William Penn Hotel; Pittsburgh, Pennsylvania USA

KEY 

   Note: A PC projector will be furnished in each meeting room.  Arrive early to ensure equipment operates/syncs correctly. 

          >       =   activity continued into another session / from another session   

         ++     =   not a Transformers Committee activity      

        TBD   =  To Be Determined  

TIME

           ‐‐ Room locations designated as (1), (2), etc., indicate the "button to press" in the elevator.  

                For instance, a room on (1) is   located on First Level, and a room on (2) is located on Second Level. 

TIME

No Meeting Registration, Technical Tours, Spouse/Companion Tours, or Social Events Planned

TIME

TIME

– Power transformer manuf facility — meeting attendees and spouses/companions by invitation only

– Bus departs from Grant Street hotel entrance at 9:00 AM and returns ~1:30 PM; special return by 12:45 PM

   upon request

– Lunch served at factory

– On‐line meeting registration will include a field to indicate interest in attending with follow up by a

   PTTI representative within one week; see flyer for details

– Contact Mr. Ira Bradford at +1.724.873.2594 or ibradford@patransformer.com for additional information

– Advance on‐line registration required — no free Sunday night reception at this meeting; admission verified 

   with RFID badge at the door prior to entering reception (registration will remain open to accommodate

   late arrivals)

– Evening begins with a reception, followed by a 3 course dinner, entertainment and special awards

– Entertainment by Don McMillan, named “#1 Corporate Comedian" by the CBS Business Net

– All celebration attendees receive a commemorative booklet and gift

– See flyer for details

– Advance on‐line registration required

– Meet in hotel lobby at 6:15 PM; group will take the “T” together (2.5 miles / 10 minutes by car)

– Order off the menu and enjoy 80’s/90’s music, karaoke bar, mechanical bull riding and big screen TVs  

– See flyer for details 

1 www.transformerscommittee.org

 IEEE PES TRANSFORMERS COMMITTEE 2/11/2018

SPRING 2018 MEETING: MARCH 25  TO  MARCH 29Omni William Penn Hotel; Pittsburgh, Pennsylvania USA

MONDAY, MARCH 26    ‐    Monday Breaks Sponsored by HV Technologies **

ACTIVITY TRACK MTG CHAIR STATUS ROOM (FLOOR)

7:00 AM –  5:00 PM Meeting Registration Registration (17)

7:00 AM –  7:50 AM Newcomers Orientation B. Forsyth Three Rivers (WP)

– Breakfast Meeting; arrive early! 

– Newcomers & Guests are encouraged to attend! 

7:00 AM –  7:50 AM Distribution & STNP SC Leaders Coordination  

– Closed breakfast meeting, by invitation only

Distr/STNP S. Shull / D. Mulkey Riverboat (WP)

7:00 AM –  8:00 AM Breakfast ‐ Attendees (no spouses/companions please) William Penn Ballrm (WP)

8:00 AM –  9:30 AM Breakfast ‐ Spouses/Companions (no meeting attendees  Lawrence Welk (Mezz)

8:00 AM –  9:15 AM Opening Session S. McNelly Grand Ballroom (17)

9:15 AM –  4:30 PM Spouses/Companions Tour:  Fallingwater Tour

9:15 AM –  9:30 AM Break (beverages only)** 17th Floor & Conf. Level

** Contact Ed Smith (edsmith@ieee.org) if you are interested in sponsoring a day of coffee breaks at a future meeting. 

9:30 AM –  10:45 AM WG Tertiary/Stabilizing Windings PC57.158 PCS E. Betancourt B Allegheny (17)

9:30 AM –  10:45 AM WG Consolidation Insulating Fluid Guides PC57.166 IF T. Prevost N Conf. Center A (CL)

9:30 AM –  10:45 AM TF External Dielectric Clearances DiTests E. Davis Conf. Center B (CL)

9:30 AM –  10:45 AM TF Transf Efficiency & Loss Evaluation (DOE Activity)  Distr P. Hopkinson I Frick (CL)

9:30 AM –  10:45 AM TF LTC Field Tests PCS M. Ferreira N Monongahela (17)

9:30 AM –  10:45 AM WG Themal Evaluation C57.100 Ins Life R. Wicks N Urban (17)

10:45 AM –  11:00 AM Break (beverages only) 17th Floor & Conf. Level

11:00 AM –  12:15 PM WG Bushings Gen. Require. C57.19.00 Bush P. Zhao I Allegheny (17)

11:00 AM –  12:15 PM WG Control Cabinets PC57.148 Power J. Watson I Conf. Center A (CL)

11:00 AM –  12:15 PM WG Ventilated Dry Type PC57.12.51 Dry Type S. Som I Conf. Center B (CL)

11:00 AM –  12:15 PM WG Overhead Distr. Transf. C57.12.20 Distr A. Traut I Frick (CL)

11:00 AM –  12:15 PM WG Moisture in Insulation PC57.162 Ins Life T. Prevost I Monongahela (17)

11:00 AM –  12:15 PM TF PCS Cont. Rev. to Test Code C57.12.90 PCS H. Sahin Urban (17)

12:15 PM –  1:30 PM Standards Development Review Luncheon William Penn Ballrm (WP)

1:45 PM –  3:00 PM Open  Allegheny (17)

1:45 PM –  3:00 PM WG Installation of Power Transf. C57.93 Power M. Lau B Conf. Center A (CL)

1:45 PM –  3:00 PM WG Dry Type Gen. Requirements C57.12.01 Dry Type C. Ballard I Conf. Center B (CL)

1:45 PM –  3:00 PM WG 1‐ph Padmount Dist Transf. C57.12.38 Distr A. Ghafourian I Frick (CL)

1:45 PM –  3:00 PM TF Audible Sound Revision to Test Code PCS R. Girgis Monongahela (17)

1:45 PM –  3:00 PM WG Thru‐Fault Current Duration PC57.109 PCS V. Mehrotra B Urban (17)

3:00 PM –  3:15 PM Break (beverages and treats) 17th Floor & Conf. Level

3:15 PM –  4:30 PM WG on Loss Measurement C57.123 PCS E. teNyenhuis N Allegheny (17)

3:15 PM –  4:30 PM WG Transformer Monitoring C57.143 Power M. Spurlock I Conf. Center A (CL)

3:15 PM –  4:30 PM SC HVDC Converter Transfs  & Smoothing Reactors HVDC M. Sharp Conf. Center B (CL)

3:15 PM –  4:30 PM WG 3‐ph Padmount Dist Transf. C57.12.34 Distr R. Stahara I Frick (CL)

3:15 PM –  4:30 PM WG Bushing Applicat. Guide C57.19.100 Bush T. Spitzer I Monongahela (17)

3:15 PM –  4:30 PM TF PD Limits for Factory Tests DiTests V. Mehrotra Urban (17)

4:30 PM –  4:45 PM Break (beverages only) 17th Floor & Conf. Level

4:45 PM –  6:00 PM WG on Neutral Grounding Devices PC57.32 PCS S. Panetta N Allegheny (17)

4:45 PM –  6:00 PM WG Dry Type Reactors PC57.16 Dry Type A. Del Rio I Conf. Center A (CL)

4:45 PM –  6:00 PM WG Sec. Network Protectors C57.12.44 STNP M. Faulkner NC Conf. Center B (CL)

4:45 PM –  6:00 PM WG Step‐Voltage Regulators   C57.15 / 60076‐21 Distr C. Colopy NC Frick (CL)

4:45 PM –  6:00 PM TF High Temp Liquid Transformers C57.154 Ins Life R. Marek N Monongahela (17)

4:45 PM –  6:00 PM TF PCS Cont. Revisions to C57.12.00 PCS T. Ansari Urban (17)

4:45 PM –  6:00 PM WG PD in Bushings & PT/CTs PC57.160 ( WILL NOT MEET) DiTests T. Hochanh B

6:15 PM –  10:00 PM Technical Tour:  Mitsubishi Electric Power Products, Inc. Tech Tour– Headquarters, Electrical Distribution Division and High Voltage Switchgear Division’s manufacturing  facilities —

    meeting attendees and spouses/companions by invitation only

– Bus departs from Grant Street hotel entrance at 6:15 PM and returns ~10:00 PM

– Dinner served at factory prior to tour

– On‐line meeting registration system will include a field to indicate interest in attending with follow up by a

   Mitsubishi representative within one week; see flyer for details

– Contact Mrs. Brooke Schwartzel at +1.724.742.3438 or brooke.schwartzel@meppi.com for additional information.

Everyone welcome to attend. All SC/WG/TF leaders are highly encouraged to attend. Doors open ~12:00 pm. Come early, get a good seat, 

and start eating. Advance registration required. Admission verified with RFID badge at the door. To listen to the presentation, without 

eating lunch, arrive by 12:30 pm. 

No Social Events Planned

TIME

– All attendees are encouraged to attend 

– See separate document for meeting agenda 

– Attendance required to maintain Committee Member status.  

– Advance on‐line registration required 

– Bus departs from Grant Street hotel entrance at 9:15 AM and returns ~4:30 PM; includes lunch

– See flyer for details

2 www.transformerscommittee.org

 IEEE PES TRANSFORMERS COMMITTEE 2/11/2018

SPRING 2018 MEETING: MARCH 25  TO  MARCH 29Omni William Penn Hotel; Pittsburgh, Pennsylvania USA

TUESDAY, MARCH 27    ‐    Tuesday Breaks Sponsored by Baron USA **

ACTIVITY TRACK MTG CHAIR STATUS ROOM (FLOOR)

7:00 AM –  11:30 AM Meeting Registration Registration (17)

7:00 AM –  7:50 AM EL&P Delegation  (End‐users only please) 

– Breakfast Meeting; arrive early!

J. Murphy Three Rivers (WP)

7:00 AM –  8:00 AM Breakfast ‐ Attendees (no spouses/companions please) William Penn Ballrm (WP)

8:00 AM –  9:30 AM Breakfast ‐ Spouses/Companions (no meeting attendees  Lawrence Welk (Mezz)

9:15 AM –  4:30 PM Spouses/Companions Tour:  Gems of Pittsburgh Tour

8:00 AM –  9:15 AM TF on Winding Insulation PF DiTests D. Robalino Allegheny (17)

8:00 AM –  9:15 AM WG Dry Type PD Detection PC57.124 Dry Type T. Prevost / R. Marek I Conf. Center A (CL)

8:00 AM –  9:15 AM WG Station Service Volt. Transf. C57.13.8 Instr TR D. Wallace I Conf. Center B (CL)

8:00 AM –  9:15 AM WG Encl Int C57.12.28, C57.12.29, C57.12.31, C57.12.32 Distr D. Mulkey I Frick (CL)

8:00 AM –  9:15 AM WG LTCs C57.131/60214‐1 Power C. Colopy N Monongahela (17)

8:00 AM –  9:15 AM WG Wind Turbine Generator Transformers, P60076‐16 PCS P. Hopkinson B Urban (17)

9:15 AM –  9:30 AM Break (beverages only) 17th Floor & Conf. Level

9:30 AM –  10:45 AM WG Shunt Reactors C57.21 PCS S. Som I Allegheny (17)

9:30 AM –  10:45 AM WG 1‐Ph Submersible Transf. C57.12.23 STNP A. Traut NC Conf. Center A (CL)

9:30 AM –  10:45 AM WG Tests for Instrument Transf. C57.13.5 Instr TR P. Riffon I Conf. Center B (CL)

9:30 AM –  10:45 AM WG Temp Measurement PC57.165 Ins Life P. McClure I Frick (CL)

9:30 AM –  10:45 AM TF Low Frequency Test Guide DiTests D. Sauer N Monongahela (17)

9:30 AM –  10:45 AM TF Condition Assessment Guide Power B. Sparling I Urban (17)

10:45 AM –  11:00 AM Break (beverages only) 17th Floor & Conf. Level

11:00 AM –  12:15 PM WG Semicond. Power Rectifier  Transfs  C57.18.10 PCS S. Kennedy I Allegheny (17)

11:00 AM –  12:15 PM WG Liquid‐immersed Sec. Network  TRs C57.12.40  STNP B. Klaponski N Conf. Center A (CL)

11:00 AM –  12:15 PM WG Distrib. Transf. Bushings PC57.19.02 Bush S. Shull I Conf. Center B (CL)

11:00 AM –  12:15 PM WG PLC Caps & CCVTs PC57.13.9 Instr TR Z. Roman I Frick (CL)

11:00 AM –  12:15 PM WG PD Acoustic Detection C57.127 DiTests D. Gross I Monongahela (17)

11:00 AM –  12:15 PM WG Transportation Issues C57.150 Power G. Anderson I Urban (17)

11:00 AM –  12:15 PM TF Impact of Different  Oils on TR Performance PCS E. teNyenhuis N Sky (17)

12:15 PM –  1:30 PM Awards Luncheon  William Penn Ballrm (WP)

1:45 PM –  3:00 PM TF Cont. Revision to Low Frequency Tests DiTests B. Griesacker Allegheny (17)

1:45 PM –  3:00 PM WG Submersible Transf. C57.12.24 STNP G. Termini N Conf. Center A (CL)

1:45 PM –  3:00 PM WG Therm Eval of Insul Systems, Dry Type C57.12.60  Dry Type R. Wicks I Conf. Center B (CL)

1:45 PM –  3:00 PM WG Instrument Transf. Tests PC57.12.2 Instr TR T. Sizemore I Frick (CL)

1:45 PM –  3:00 PM WG 3‐ph Transf. Connections PC57.105 PCS R. Verdolin I Monongahela (17)

1:45 PM –  3:00 PM WG Tap Changer Applicat. Guide 60214‐2  Power C. Colopy B Urban (17)

3:00 PM –  3:15 PM Break (beverages and pretzels) 17th Floor & Conf. Level

3:15 PM –  4:30 PM WG Gas Interpretation Guide C57.104 IF C. Beauchemin B Allegheny (17)

3:15 PM –  4:30 PM WG Partial Discharge Test ‐ C57.113 DiTests A. Naderian N Conf. Center A (CL)

3:15 PM –  4:30 PM WG Std Terminal Markings C57.12.70 Stds S. Shull I Conf. Center B (CL)

3:15 PM –  4:30 PM TF V/Hz Requirements Power K. Yule N Frick (CL)

3:15 PM –  4:30 PM WG High‐Temp Insulat. Materials, P‐1276 Ins Life R. Wicks I Monongahela (17)

3:15 PM –  4:30 PM WG Sw Transients Ind by TR/Bkr Interaction PC57.142  PCS J. McBride N Urban (17)

4:30 PM –  4:45 PM Break (beverages only) 17th Floor & Conf. Level

4:45 PM –  6:00 PM TF Rev to Imp. Test Sect of C57.12.00 & C57.12.90  DiTests P. Riffon Allegheny (17)

4:45 PM –  6:00 PM WG Dry Type Test Code C57.12.91 Dry Type D. Walker I Conf. Center A (CL)

4:45 PM –  6:00 PM WG Std Transf. Terminology C57.12.80 Stds C. Claiborne I Conf. Center B (CL)

4:45 PM –  6:00 PM TF Bushing Overload Bush M. Weisensee N Frick (CL)

4:45 PM –  6:00 PM WG Loading Guide PC57.91 Ins Life D. Wallach I Monongahela (17)

4:45 PM –  6:00 PM WG Short Circuit Withstand PC57.164 PCS S. Patel I Urban (17)

4:45 PM –  6:00 PM TF Guide for Monitoring Distribution Transformers  Distr TBD N Sky (17)

No Technical Tours or Social Events Planned

TIME

Doors open ~12:00 pm.  Come early, get a good seat, and start eating.  Advance registrration is required. Admission verified 

with RFID badge at the door. Mtg attendees are encouraged to attend to show appreciation and recognize accomplishments. 

– Advance on‐line registration required

– Bus departs from Grant Street hotel entrance at 9:15 AM and returns ~4:30 PM; includes lunch

– See flyer for details

3 www.transformerscommittee.org

 IEEE PES TRANSFORMERS COMMITTEE 2/11/2018

SPRING 2018 MEETING: MARCH 25  TO  MARCH 29Omni William Penn Hotel; Pittsburgh, Pennsylvania USA

WEDNESDAY, MARCH 28    ‐    Wednesday Breaks Sponsored by Central Moloney, Inc. **

ACTIVITY TRACK MTG CHAIR STATUS ROOM (FLOOR)

7:00 AM –  8:00 AM Breakfast ‐ Attendees (no spouses/companions please) William Penn Ballrm (WP)

7:00 AM –  8:00 AM SC Meetings Planning  Mtgs T. Behrens Riverboat (WP)

7:00 AM –  8:00 AM IEC TC‐14 Technical Advisory Group  ++ P. Hopkinson Three Rivers (WP)

– Breakfast meeting; arrive early 

– All interested individuals welcome

8:00 AM –  9:30 AM Breakfast ‐ Spouses/Companions (no meeting attendees  Lawrence Welk (Mezz)

8:00 AM –  9:15 AM SC Instrument Transformers Instr TR R. McTaggart Monongahela (17)

8:00 AM –  9:15 AM SC Insulation Life Ins Life S. Kennedy Urban (17)

9:15 AM –  9:30 AM Break (beverages only) 17th Floor

9:30 AM –  10:45 AM SC Distribution Transformers Distr S. Shull Monongahela (17)

9:30 AM –  10:45 AM SC Bushings Bush P. Zhao Urban (17)

10:45 AM –  11:00 AM Break (beverages only) 17th Floor

11:00 AM –  12:15 PM SC Submersible Transf. & Network Protectors STNP D. Mulkey Monongahela (17)

11:00 AM –  12:15 PM SC Dielectric Test DiTests A. Varghese Urban (17)

12:15 PM –  1:30 PM Lunch (on your own)

1:30 PM –  2:45 PM SC Dry Type Transformers Dry Type C. Johnson Monongahela (17)

1:30 PM –  2:45 PM SC Power Transformers Power B. Griesacker Urban (17)

2:45 PM –  3:00 PM Break (beverages and treats) 17th Floor

3:00 PM –  4:15 PM SC Insulating Fluids IF D. Wallach Monongahela (17)

3:00 PM –  4:15 PM SC Performance Characteristics PCS C. Stiegemeier Urban (17)

4:15 PM –  4:30 PM Break (beverages only) 17th Floor

4:30 PM –  5:45 PM SC Standards Stds J. Murphy Monongahela (17)

6:15 PM –  10:30 PM Technical Tour:  ABB Inc. Tech Tour

THURSDAY, MARCH 29

ACTIVITY TRACK MTG CHAIR STATUS ROOM (FLOOR)

7:00 AM –  8:00 AM William Penn Ballrm (WP)

8:00 AM –  9:30 AM Lawrence Welk (Mezz)

8:00 AM –  9:15 AM Technical Presentation 1 Tutorial Grand Ballroom (17)

9:15 AM –  9:30 AM Break (beverages only) 17th Floor

9:30 AM –  10:45 AM Technical Presentation 2 Tutorial Grand Ballroom (17)

10:45 AM –  11:00 AM Break (beverages only) 17th Floor

11:00 AM –  12:00 PM Closing Session  Grand Ballroom (17)

12:00 PM Lunch (on your own)

**   Contact Tom Prevost (tprevost@ieee.org) if you are interested in making a technical presentation at a future meeting. 

FUTURE COMMITTEE MEETINGS

No Meeting Registration, Spouse/Companion Tours, or  Social Events Planned

– High Voltage North American headquarters, High Voltage Breakers and Surge Arresters manufacturing facilities —

    meeting attendees and spouses/companions by invitation only

– Bus departs from Grant Street hotel entrance at 6:15 PM and returns ~10:30 PM

– Dinner served at factory prior to tour 

– On‐line meeting registration system will include a field to indicate interest in attending with follow up by an ABB 

   representative within one week; see flyer for details

– Contact Ms. Charlotte Buccardo at +1.724.696.1512 or charlotte.buccardo@us.abb.com for additional information

Breakfast ‐ Attendees (no spouses/companions please)

No Meeting Registration, Technical Tours, Spouse/Companion Tours, or Social Events Planned

Spring 2019: March 10‐14 or 17‐21 or 24‐28; USA Location, to be determined

Fall 2018: October 14‐18; Jacksonville, Florida USA

All attendees are encouraged to attend 

See separate document for meeting agenda 

Breakfast ‐ Spouses/Companions (no meeting attendees please)

Distribution Transformer Quality Assurance

By: Thomas Champion (NEETRAC), Yamille del Valle (NEETRAC) and Dean Williams (NEETRAC)

See Flyer on Website **

Statistical Methods for Transformer Condition Assessment

By: Luiz Cheim (ABB), Jim Dukarm (Delta‐X Research), and Tom Rhodes (Duke Energy)

See Flyer on Website **

TIME

TIME

4 www.transformerscommittee.org

 IEEE PES TRANSFORMERS COMMITTEE 2/11/2018

SPRING 2018 MEETING: MARCH 25  TO  MARCH 29Omni William Penn Hotel; Pittsburgh, Pennsylvania USA

(17)

(17)

(CL)

5 www.transformerscommittee.org

 IEEE PES TRANSFORMERS COMMITTEE 2/11/2018

SPRING 2018 MEETING: MARCH 25  TO  MARCH 29Omni William Penn Hotel; Pittsburgh, Pennsylvania USA

(MEZZ)

(WP)

6 www.transformerscommittee.org

 IEEE PES TRANSFORMERS COMMITTEE

 SUBCOMMITTEE MEETING LIST

2/11/2018

SPRING 2018 MEETING: MARCH 25  TO  MARCH 29Omni William Penn Hotel; Pittsburgh, Pennsylvania USA

Date Time Start Time End Session Title Track Chair Room/Location3/25/2018 1:00 PM 4:30 PM Administrative Subcommittee

– Closed Meeting, by invitation onlyAdmin S. McNelly Monongahela (17)

3/26/2018 11:00 AM 12:15 PM WG Bushings Gen. Require. C57.19.00 Bush P. Zhao Allegheny (17)3/26/2018 3:15 PM 4:30 PM WG Bushing Applicat. Guide C57.19.100 Bush T. Spitzer Monongahela (17)3/27/2018 11:00 AM 12:15 PM WG Distrib. Transf. Bushings PC57.19.02 Bush S. Shull Conf. Center B (CL)3/27/2018 4:45 PM 6:00 PM TF Bushing Overload Bush M. Weisensee Frick (CL)3/28/2018 9:30 AM 10:45 AM SC Bushings Bush P. Zhao Urban (17)

3/26/2018 9:30 AM 10:45 AM TF Transf Efficiency & Loss Evaluation (DOE Activity) Distr P. Hopkinson Frick (CL)3/26/2018 11:00 AM 12:15 PM WG Overhead Distr. Transf. C57.12.20 Distr A. Traut Frick (CL)3/26/2018 1:45 PM 3:00 PM WG 1-ph Padmount Dist Transf. C57.12.38 Distr A. Ghafourian Frick (CL)3/26/2018 3:15 PM 4:30 PM WG 3-ph Padmount Dist Transf. C57.12.34 Distr R. Stahara Frick (CL)3/26/2018 4:45 PM 6:00 PM WG Step-Voltage Regulators C57.15 / 60076-21 Distr C. Colopy Frick (CL)3/27/2018 8:00 AM 9:15 AM WG Encl Int C57.12.28, C57.12.29, C57.12.31, C57.12.32 Distr D. Mulkey Frick (CL)3/27/2018 4:45 PM 6:00 PM TF Guide for Monitoring Distribution Transformers Distr TBD Sky (17)3/28/2018 9:30 AM 10:45 AM SC Distribution Transformers Distr S. Shull Monongahela (17)

3/26/2018 7:00 AM 7:50 AM Distribution & STNP SC Leaders Coordination – Closed breakfast meeting, by invitation only

Distr/STNP S. Shull / D. MulkeRiverboat (WP)

3/26/2018 9:30 AM 10:45 AM TF External Dielectric Clearances DiTests E. Davis Conf. Center B (CL)3/26/2018 3:15 PM 4:30 PM TF PD Limits for Factory Tests DiTests V. Mehrotra Urban (17)3/26/2018 4:45 PM 6:00 PM WG PD in Bushings & PT/CTs PC57.160 ( WILL NOT MEET) DiTests T. Hochanh

3/27/2018 8:00 AM 9:15 AM TF on Winding Insulation PF DiTests D. Robalino Allegheny (17)3/27/2018 9:30 AM 10:45 AM TF Low Frequency Test Guide DiTests D. Sauer Monongahela (17)3/27/2018 11:00 AM 12:15 PM WG PD Acoustic Detection C57.127 DiTests D. Gross Monongahela (17)3/27/2018 1:45 PM 3:00 PM TF Cont. Revision to Low Frequency Tests DiTests B. Griesacker Allegheny (17)3/27/2018 3:15 PM 4:30 PM WG Partial Discharge Test - C57.113 DiTests A. Naderian Conf. Center A (CL)3/27/2018 4:45 PM 6:00 PM TF Rev to Imp. Test Sect of C57.12.00 & C57.12.90 DiTests P. Riffon Allegheny (17)3/28/2018 11:00 AM 12:15 PM SC Dielectric Test DiTests A. Varghese Urban (17)

3/26/2018 11:00 AM 12:15 PM WG Ventilated Dry Type PC57.12.51 Dry Type S. Som Conf. Center B (CL)3/26/2018 1:45 PM 3:00 PM WG Dry Type Gen. Requirements C57.12.01 Dry Type C. Ballard Conf. Center B (CL)3/26/2018 4:45 PM 6:00 PM WG Dry Type Reactors PC57.16 Dry Type A. Del Rio Conf. Center A (CL)3/27/2018 8:00 AM 9:15 AM WG Dry Type PD Detection PC57.124 Dry Type T. Prevost / R. Ma Conf. Center A (CL)3/27/2018 1:45 PM 3:00 PM WG Therm Eval of Insul Systems, Dry Type C57.12.60 Dry Type R. Wicks Conf. Center B (CL)3/27/2018 4:45 PM 6:00 PM WG Dry Type Test Code C57.12.91 Dry Type D. Walker Conf. Center A (CL)3/28/2018 1:30 PM 2:45 PM SC Dry Type Transformers Dry Type C. Johnson Monongahela (17)

3/26/2018 3:15 PM 4:30 PM SC HVDC Converter Transfs & Smoothing Reactors HVDC M. Sharp Conf. Center B (CL)

3/26/2018 9:30 AM 10:45 AM WG Consolidation Insulating Fluid Guides PC57.166 IF T. Prevost Conf. Center A (CL)3/27/2018 3:15 PM 4:30 PM WG Gas Interpretation Guide C57.104 IF C. Beauchemin Allegheny (17)3/28/2018 3:00 PM 4:15 PM SC Insulating Fluids IF D. Wallach Monongahela (17)

3/26/2018 9:30 AM 10:45 AM WG Themal Evaluation C57.100 Ins Life R. Wicks Urban (17)3/26/2018 11:00 AM 12:15 PM WG Moisture in Insulation PC57.162 Ins Life T. Prevost Monongahela (17)3/26/2018 4:45 PM 6:00 PM TF High Temp Liquid Transformers C57.154 Ins Life R. Marek Monongahela (17)3/27/2018 9:30 AM 10:45 AM WG Temp Measurement PC57.165 Ins Life P. McClure Frick (CL)3/27/2018 3:15 PM 4:30 PM WG High-Temp Insulat. Materials, P-1276 Ins Life R. Wicks Monongahela (17)3/27/2018 4:45 PM 6:00 PM WG Loading Guide PC57.91 Ins Life D. Wallach Monongahela (17)3/28/2018 8:00 AM 9:15 AM SC Insulation Life Ins Life S. Kennedy Urban (17)

3/27/2018 8:00 AM 9:15 AM WG Station Service Volt. Transf. C57.13.8 Instr TR D. Wallace Conf. Center B (CL)3/27/2018 9:30 AM 10:45 AM WG Tests for Instrument Transf. C57.13.5 Instr TR P. Riffon Conf. Center B (CL)3/27/2018 11:00 AM 12:15 PM WG PLC Caps & CCVTs PC57.13.9 Instr TR Z. Roman Frick (CL)3/27/2018 1:45 PM 3:00 PM WG Instrument Transf. Tests PC57.12.2 Instr TR T. Sizemore Frick (CL)3/28/2018 8:00 AM 9:15 AM SC Instrument Transformers Instr TR R. McTaggart Monongahela (17)

3/28/2018 7:00 AM 8:00 AM SC Meetings Planning – Breakfast Meeting; arrive early!

Mtgs T. Behrens Riverboat (WP)

7 www.transformerscommittee.org

 IEEE PES TRANSFORMERS COMMITTEE

 SUBCOMMITTEE MEETING LIST

2/11/2018

SPRING 2018 MEETING: MARCH 25  TO  MARCH 29Omni William Penn Hotel; Pittsburgh, Pennsylvania USA

Date Time Start Time End Session Title Track Chair Room/Location3/26/2018 9:30 AM 10:45 AM TF LTC Field Tests PCS M. Ferreira Monongahela (17)3/26/2018 9:30 AM 10:45 AM WG Tertiary/Stabilizing Windings PC57.158 PCS E. Betancourt Allegheny (17)3/26/2018 11:00 AM 12:15 PM TF PCS Cont. Rev. to Test Code C57.12.90 PCS H. Sahin Urban (17)3/26/2018 1:45 PM 3:00 PM TF Audible Sound Revision to Test Code PCS R. Girgis Monongahela (17)3/26/2018 1:45 PM 3:00 PM WG Thru-Fault Current Duration PC57.109 PCS V. Mehrotra Urban (17)3/26/2018 3:15 PM 4:30 PM WG on Loss Measurement C57.123 PCS E. teNyenhuis Allegheny (17)3/26/2018 4:45 PM 6:00 PM TF PCS Cont. Revisions to C57.12.00 PCS T. Ansari Urban (17)3/26/2018 4:45 PM 6:00 PM WG on Neutral Grounding Devices PC57.32 PCS S. Panetta Allegheny (17)3/27/2018 8:00 AM 9:15 AM WG Wind Turbine Generator Transformers, P60076-16 PCS P. Hopkinson Urban (17)3/27/2018 9:30 AM 10:45 AM WG Shunt Reactors C57.21 PCS S. Som Allegheny (17)3/27/2018 11:00 AM 12:15 PM TF Impact of Different Oils on TR Performance PCS E. teNyenhuis Sky (17)3/27/2018 11:00 AM 12:15 PM WG Semicond. Power Rectifier Transfs C57.18.10 PCS S. Kennedy Allegheny (17)3/27/2018 1:45 PM 3:00 PM WG 3-ph Transf. Connections PC57.105 PCS R. Verdolin Monongahela (17)3/27/2018 3:15 PM 4:30 PM WG Sw Transients Ind by TR/Bkr Interaction PC57.142 PCS J. McBride Urban (17)3/27/2018 4:45 PM 6:00 PM WG Short Circuit Withstand PC57.164 PCS S. Patel Urban (17)3/28/2018 3:00 PM 4:15 PM SC Performance Characteristics PCS C. Stiegemeier Urban (17)

3/26/2018 11:00 AM 12:15 PM WG Control Cabinets PC57.148 Power J. Watson Conf. Center A (CL)3/26/2018 1:45 PM 3:00 PM WG Installation of Power Transf. C57.93 Power M. Lau Conf. Center A (CL)3/26/2018 3:15 PM 4:30 PM WG Transformer Monitoring C57.143 Power M. Spurlock Conf. Center A (CL)3/27/2018 8:00 AM 9:15 AM WG LTCs C57.131/60214-1 Power C. Colopy Monongahela (17)3/27/2018 9:30 AM 10:45 AM TF Condition Assessment Guide Power B. Sparling Urban (17)3/27/2018 11:00 AM 12:15 PM WG Transportation Issues C57.150 Power G. Anderson Urban (17)3/27/2018 1:45 PM 3:00 PM WG Tap Changer Applicat. Guide 60214-2 Power C. Colopy Urban (17)3/27/2018 3:15 PM 4:30 PM TF V/Hz Requirements Power K. Yule Frick (CL)3/28/2018 1:30 PM 2:45 PM SC Power Transformers Power B. Griesacker Urban (17)

3/27/2018 3:15 PM 4:30 PM WG Std Terminal Markings C57.12.70 Stds S. Shull Conf. Center B (CL)3/27/2018 4:45 PM 6:00 PM WG Std Transf. Terminology C57.12.80 Stds C. Claiborne Conf. Center B (CL)3/28/2018 4:30 PM 5:45 PM SC Standards Stds J. Murphy Monongahela (17)

3/26/2018 4:45 PM 6:00 PM WG Sec. Network Protectors C57.12.44 STNP M. Faulkner Conf. Center B (CL)3/27/2018 9:30 AM 10:45 AM WG 1-Ph Submersible Transf. C57.12.23 STNP A. Traut Conf. Center A (CL)3/27/2018 11:00 AM 12:15 PM WG Liquid-immersed Sec. Network TRs C57.12.40 STNP B. Klaponski Conf. Center A (CL)3/27/2018 1:45 PM 3:00 PM WG Submersible Transf. C57.12.24 STNP G. Termini Conf. Center A (CL)3/28/2018 11:00 AM 12:15 PM SC Submersible Transf. & Network Protectors STNP D. Mulkey Monongahela (17)

8 www.transformerscommittee.org

APPENDIX 2

Semi-Annual Standards Report

Spring 2018 Standards Report Page 1 of 20

IEEE / PES /TRANSFORMERS COMMITTEE

Standards Report To: Members of Transformers Committee March 12, 2018

From: Jim Graham, Standards Coordinator

Executive Summary

This report covers Transformers Committee Standards activity from September 29, 2017 through March 9, 2018. During this time two new Standards, and seven Revisions, Corrigenda were approved by the Standards Board. In this same period, the Standards Board approved one PAR for new standards; four PARs for Revisions; and four PAR extensions.

Twelve (12) standards will expire in 2018, including one standard (C57.136) which does not have an active PAR. Seven (7) standards will expire in 2019.

In this Report:

I. Standards approved ....................................................................pg 1

II. PARs approved ............................................................................pg 2

III. Standards Board 2017 Meeting Schedule ................................pg 3

IV. Transformer Committee Ballot Status .....................................pg 3-4

V. Transformers Committee Active PAR Status ..........................pg 5-9

VI. Transformer Standards Status ..................................................pg 10- 20

Appendix A Transformers Committee Organization Chart

Appendix B IEEE Standards Association Meeting Schedule - 2018

I. Standards approved since Sep 29, 2017

Approved New Transformer Standards

PC57.12.39 Standard Requirements for Distribution Transformer Tank Pressure Coordination

PC57.12.158 Draft Guide for the Application of Tertiary and Stabilizing Windings in Power Transformers

Approved Revisions to Transformer Standards (All expire 31 Dec 2026)

PC57.12.10 Standard Requirements for Liquid Immersed Power Transformers

PC57.13.1 Guide for Field Testing of Relaying Current Transformers

PC57.15 Standard for Performance Characteristics and Dimensions for Transformer and Reactor Bushings

PC57.19.01 Standard for Performance Characteristics and Dimensions for Transformer and Reactor Bushings

PC57.19.04 Standard Performance Characteristics and Dimensions for High Current Power Transformer Bushings with Rated Continuous Current in Excess of 5000 A in Bus

PC57.119 Recommended Practice for Performing Temperature Rise Tests on Oil-Immersed Power Transformers at Loads Beyond Nameplate Ratings

PC57.147 Guide for Acceptance and Maintenance of Natural Ester Insulating Liquid in Transformers

Approved Standards Amendments & Corrigenda None

Spring 2018 Standards Report

II. PARs approved since Sep 29, 2017

Approved PARs for New Projects (All expire December2022)

PC57.166 Guide for Acceptance and Maintenance of Insulating Liquids in Transformers and Related

Equipment

Approved PARs for Revision of Standards (All Expire as noted)

PC57.12.90 Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers

(December 2021)

PC57.13.2 Standard for Conformance Test Procedure for Instrument Transformers (December 2021)

PC57.19.00 Standard General Requirements and Test Procedure for Power Apparatus Bushings

(Dec 2022)

PC57.113 Recommended Practice for Partial Discharge Measurement in Liquid-Filled Power Transformers

and Shunt Reactors (December 2021)

Approved PAR Modifications None

(PAR Modifications do not change the Expiration Date)

Approved PARs for Amendments & Corrigenda None

Approved PAR Extensions (All expire as noted)

PC57.13.7 Standard for Current Transformers with a Maximum mA Secondary Current of 250 mA

(December 2018)

PC57.104 Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers (December 2019)

PC57.161 Guide for the Interpretation of Moisture Related Parameters in Dry, Gas Insulated and Liquid

Immersed Transformers and Reactors (December 2020)

PC57.162 Guide for the Interpretation of Moisture Related Parameters in Dry, Gas Insulated and Liquid

Immersed Transformers and Reactors (December 2020)

Spring 2018 Standards Report

III. 2017 IEEE Standards Board Meeting Schedule

The Standards Board has three physical board meetings per year and three teleconference meetings. The IEEE

2018 Standards Association meetings schedule is appended to this report.

Deadlines for 2018 Standards Board Submissions:

Please Note: Anything that expires at the end of 2018 must be submitted to

Standards Board (PARs to NESCOM, standards to REVCOM) by 15 October, 2018

IV. Transformers Committee Ballot Status (as of MAR 10, 2018)

PAR Number

WG Chair Project Type

Approval Date

PAR Expiration

Invitation Close Date

Ballot Close Date

Status

Bushings

PC57.19.04 Scott Digby New 16-Jun-2011 12/31/2018 5/21/2017 2/22/2018 RevCom Agenda 26-Apr-2018

PC57.127 Detlev Gross Revision 16-Feb-2015 12/31/2019 1/21/2018 2/27/2018 Sponsor Ballot: Comment Resolution

PC57.161 Ali Naderian New 23-Aug-2013 12/31/2018 12/4/2016 3/23/2018 Sponsor Ballot: Comment Resolution

Insulating Fluids

PC57.104 Claude Beauchemin Revision 5-Feb-2010 12/31/2019 1/15/2018 Sponsor Ballot: PreBallot

Standards Board Meeting Submission Deadline

January 2018 (teleconference) 20 December, 2017

March 2018 26 January, 2018

April 2018 (teleconference) 16 March, 2018

June 2018 04 May, 2018

September 2018 (teleconference) 27 July, 2018

December 2018 15 October, 2018

Spring 2018 Standards Report

PAR Number

WG Chair Project Type

Approval Date

PAR Expiration

Invitation Close Date

Ballot Close Date

Status

Insulation Life

PC57.119 Gael Kennedy Revision 27-Oct-2014 12/31/2018 RevCom Agenda 26-Apr-2018

Instrument Transformers

PC57.13.7 Henry Alton New 30-Sep-2010 12/31/2018 10/13/2016 12/13/2017 Sponsor Ballot: Comment Resolution

Performance Characteristics

P60076-16 Phil Hopkinson New 10-Dec-2014 12/31/2018 1/4/2015 2/2/2018 Sponsor Ballot: Comment Resolution

PC57.109 Vinay Mehrotra Revision 26-Mar-2015 12/31/2019 6/7/2017 8/30/2017 Sponsor Ballot: Comment Resolution

PC57.110 Richard Marek Revision 12-Jun-2014 12/31/2018 9/16/2017 3/4/2018 Sponsor Ballot: Recirc Ballot

Power Transformers

P60214-2 Craig Colopy New 12-Jun-2014 12/31/2018 8/9/2017 1/31/2018 Sponsor Ballot: Comment Resolution

PC57.93 Mike Lau Revision 29-Mar-2012 12/31/2018 3/17/2018 Sponsor Ballot: Invitation

Spring 2018 Standards Report Page 5 of 20

V. Transformers Committee Active PAR Status (as of MAR 10, 2018)

PAR Number

WG Chair Project Type

Title Approval

Date PAR

Expiration Status

Bushings

PC57.19.00 Peter Zhao Revision Standard General Requirements and Test Procedure for Power Apparatus Bushings

15-Feb-2018 12/31/2022 WG Draft Development

PC57.19.02 Stephen Shull New Standard for the Design and Performance Requirements of Bushings Applied to Liquid Immersed Distribution Transformers

5-Feb-2016 12/31/2020 WG Draft Development

PC57.19.04 Scott Digby New

Standard Performance Characteristics and Dimensions for High Current Power Transformer Bushings with Rated Continuous Current in Excess of 5000 A in Bus Enclosures

16-Jun-2011 12/31/2018 RevCom Agenda 26-Apr-2018

Dielectric Test

PC57.113 Ali Naderian Revision Recommended Practice for Partial Discharge Measurement in Liquid-Filled Power Transformers and Shunt Reactors

6-Dec-2017 12/31/2021 WG Draft Development

PC57.127 Detlev Gross Revision

Guide for the Detection, Location and Interpretation of Sources of Acoustic Emissions from Electrical Discharges in Power Transformers and Power Reactors

16-Feb-2015 12/31/2019 Sponsor Ballot: Comment Resolution

PC57.160 Thang Hochanh New Guide for the Electrical Measurement of Partial Discharges in High Voltage Bushings and Instrument Transformers

15-Jun-2017 12/31/2019 WG Draft Development

PC57.161 Ali Naderian New Guide for Dielectric Frequency Response Test 23-Aug-2013 12/31/2018 Sponsor Ballot: Comment Resolution

Distribution Transformers

PC57.12.32 Dan Mulkey Revision Standard for Submersible Equipment - Enclosure Integrity

11-Jun-2015 12/31/2019 WG Draft Development

PC57.12.34 Ron Stahara Revision

Standard Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers, 10 MVA and Smaller; High-Voltage, 34.5 kV Nominal System Voltage and Below; Low-Voltage, 15 kV Nominal System Voltage and Below

22-Sep-2016 12/31/2020 WG Draft Development

PC57.12.38 Ali Ghafourian Revision

Standard for Pad-Mounted-Type, Self-Cooled, Single-Phase Distribution Transformers 250 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 V and Below; Low Voltage, 480/240 V and Below

28-Sep-2017 12/31/2021 WG Draft Development

Spring 2018 Standards Report

PAR Number

WG Chair Project Type

Title Approval

Date PAR

Expiration Status

Dry Type Transformers

PC57.12.01 Casey Ballard Revision Standard for General Requirements for Dry-Type Distribution and Power Transformers

12-May-2016 12/31/2020 WG Draft Development

PC57.12.51 Sanjib Som Revision

Standard for Ventilated Dry-Type Power Transformers, 501 kVA and Larger, Three-Phase, with High-Voltage 601 V to 34 500 V; Low-Voltage 208Y/120 V to 4160 V- General Requirements

21-Aug-2014 12/31/2018 WG Draft Development

PC57.12.51 Sanjib Som Revision Guide for Mechanical Interchangeability of Ventilated Dry Type Transformers

18-May-2017 12/31/2018 WG Draft Development

PC57.12.60 Roger Wicks Revision Standard Test Procedure for Thermal Evaluation of Insulation Systems for Dry-Type Power and Distribution Transformers

11-Jun-2015 12/31/2019 WG Draft Development

PC57.12.91 Derek Foster Revision Standard Test Code for Dry-Type Distribution and Power Transformers

3-Mar-2016 12/31/2020 WG Draft Development

PC57.16 Arturo Del Rio Revision Standard for Requirements, Terminology, and Test Code for Dry-Type Air-Core Series-Connected Reactors

5-Feb-2016 12/31/2020 WG Draft Development

PC57.124 Tom Prevost Revision

Recommended Practice for the Detection of Partial Discharge and the Measurement of Apparent Charge in Dry-Type Transformers

15-Jun-2017 12/31/2021 WG Draft Development

HVDC Converter Transformers & Smoothing Reactors

P1277 Klaus Pointer Revision

Standard General Requirements and Test Code for Dry-Type and Oil-Immersed Smoothing Reactors and for Dry-Type Converter Reactors for DC Power Transmission

17-Feb-2017 12/31/2021 WG Draft Development

Insulating Fluids

PC57.104 Claude Beauchemin Revision Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers

5-Feb-2010 12/31/2019 Sponsor Ballot: PreBallot

PC57.166 Tom Prevost New Guide for Acceptance and Maintenance of Insulating Liquids in Transformers and Related Equipment

8-Mar-2018 12/31/2022 WG Draft Development

Spring 2018 Standards Report

PAR Number

WG Chair Project Type

Title Approval

Date PAR

Expiration Status

Insulation Life

P1276 Roger Wicks Revision

Guide for the Application of High-Temperature Insulation Materials in Liquid-Immersed Distribution, Power and Regulating Transformers

27-Mar-2014 12/31/2018 WG Draft Development

PC57.91 Dave Wallach Revision Guide for Loading Mineral-Oil-Immersed Transformers and Step-Voltage Regulators

28-Sep-2017 12/31/2021 WG Draft Development

PC57.119 Gael Kennedy Revision

Recommended Practice for Performing Temperature Rise Tests on Oil-Immersed Power Transformers at Loads Beyond Nameplate Ratings

27-Oct-2014 12/31/2018 RevCom Agenda 26-Apr-2018

PC57.162 Tom Prevost New Guide for the Interpretation of Moisture Related Parameters in Dry, Gas Insulated and Liquid Immersed Transformers and Reactors

23-Aug-2013 12/31/2020 WG Draft Development

PC57.165 Phil McClure New Guide for Temperature Measurements for Liquid Immersed Transformers and Reactors

17-Feb-2017 12/31/2021 WG Draft Development

Instrument Transformers

PC57.13.2 Thomas Sizemore Revision Standard for Conformance Test Procedure for Instrument Transformers

6-Dec-2017 12/31/2021 WG Draft Development

PC57.13.5 Pierre Riffon Revision

Standard of Performance and Test Requirements for Instrument Transformers of a Nominal System Voltage of 115 kV and Above

3-Mar-2016 12/31/2020 WG Draft Development

PC57.13.7 Henry Alton New Standard for Current Transformers with a Maximum mA Secondary Current of 250 mA

30-Sep-2010 12/31/2018 Sponsor Ballot: Comment Resolution

PC57.13.8 Dave Wallace New Standard Requirements for Station Service Voltage Transformers

11-Dec-2013 12/31/2019 WG Draft Development

PC57.13.9 Zoltan Roman New Standard for Power-Line Carrier Coupling Capacitors and Coupling Capacitor Voltage Transformers

23-Mar-2017 12/31/2021 WG Draft Development

Performance Characteristics

P60076-16 Phil Hopkinson New Power Transformers - Part 16: Transformers for Wind Turbine Application

10-Dec-2014 12/31/2018 Sponsor Ballot: Comment Resolution

PC57.18.10 Sheldon Kennedy Revision Standard Practices and Requirements for Semiconductor Power Rectifier Transformers

30-Jun-2016 12/31/2020 WG Draft Development

Spring 2018 Standards Report

PAR Number

WG Chair Project Type

Title Approval

Date PAR

Expiration Status

Performance Characteristics

P60076-16 Phil Hopkinson New Power Transformers - Part 16: Transformers for Wind Turbine Application

10-Dec-2014 12/31/2018 Sponsor Ballot: Comment Resolution

PC57.18.10 Sheldon Kennedy Revision Standard Practices and Requirements for Semiconductor Power Rectifier Transformers

30-Jun-2016 12/31/2020 WG Draft Development

PC57.21 Sanjib Som Revision Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500 kVA

21-Aug-2014 12/31/2018 WG Draft Development

PC57.32a Sergio Panetta Amendment

Standard for Requirements, Terminology, and Test Procedures for Neutral Grounding Devices Amendment: Neutral Grounding Resistor Section

17-Feb-2017 12/31/2021 WG Draft Development

PC57.105 Roger Verdolin Revision Guide for Application of Transformer Connections in Three-Phase Electrical Systems

26-Mar-2015 12/31/2019 WG Draft Development

PC57.109 Vinay Mehrotra Revision Guide for Liquid-Immersed Transformers Through-Fault-Current Duration

26-Mar-2015 12/31/2019 Sponsor Ballot: Comment Resolution

PC57.110 Richard Marek Revision

Recommended Practice for Establishing Liquid-Immersed and Dry-Type Power and Distribution Transformer Capability When Supplying Nonsinusoidal Load Currents

12-Jun-2014 12/31/2018 Sponsor Ballot: Recirc Ballot

PC57.123 Ed TeNyenhuis Revision Guide for Transformer Loss Measurement 15-Jun-2017 12/31/2021 WG Draft Development

PC57.142 James Mcbride Revision

Guide to Describe the Occurrence and Mitigation of Switching Transients Induced by Transformers, Switching Device, and System Interaction

23-Mar-2017 12/31/2021 WG Draft Development

PC57.164 Sanjay Patel New Guide for Establishing Short Circuit Withstand Capabilities of Liquid Immersed Power Transformers, Regulators, and Reactors

30-Jun-2016 12/31/2020 WG Draft Development

Power Transformers

P60214-1-57-131 Craig Colopy New Standard Requirements for Tap Changers 7-Dec-2016 12/31/2020 WG Draft Development

P60214-2 Craig Colopy New Tap-Changers - Part 2: Application Guide 12-Jun-2014 12/31/2018 Sponsor Ballot: Comment Resolution

PC57.93 Mike Lau Revision Guide for Installation and Maintenance of Liquid-Immersed Power Transformers

29-Mar-2012 12/31/2018 Sponsor Ballot: Invitation

Spring 2018 Standards Report

PAR Number

WG Chair Project Type

Title Approval

Date PAR

Expiration Status

Power Transformers

PC57.143 Michael Spurlock Revision Guide for Application of Monitoring Equipment to Liquid-Immersed Transformers and Components

17-Feb-2017 12/31/2021 WG Draft Development

PC57.148 Joe Watson Revision Standard for Control Cabinets for Power Transformers

30-Jun-2016 12/31/2020 WG Draft Development

PC57.150 Greg Anderson Revision Guide for the Transportation of Transformers and Reactors Rated 10,000 kVA or Higher

23-Mar-2017 12/31/2021 WG Draft Development

Standards

PC57.12.00 Steve Snyder Revision Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers

17-Feb-2017 12/31/2021 WG Draft Development

PC57.12.90 Stephen Antosz Revision Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers

6-Dec-2017 12/31/2021 WG Draft Development

PC57.12.70-2011/Cor 1 Stephen Shull Corrigendum

Standard Terminal Markings and Connections for Distribution and Power Transformers - Corrigendum 1: Correction of Annex A

5-Feb-2016 12/31/2019 WG Draft Development

PC57.12.80 Clair Claiborne Revision Standard Terminology for Power and Distribution Transformers

23-Mar-2017 12/31/2021 WG Draft Development

Subsurface Transformers & Network Protectors

PC57.12.23 Allan Traut Revision

Standard for Submersible Single-Phase Transformers: 250 kVA and Smaller; High Voltage 34 500GrdY/19 920V and Below; Low Voltage 600 V and Below

21-Aug-2014 12/31/2018 WG Draft Development

PC57.12.44 Mark Faulkner Revision Standard Requirements for Secondary Network Protectors

26-Mar-2015 12/31/2019 WG Draft Development

Spring 2018 Standards Report Page 10 of 20

VI. Transformers Standards Status (as of Mar 10, 2018)

Standard Number

Title Year SASB

Expiration Notes

Bushings SC Chair: Peter Zhao email: peter.zhao@HydroOne.com phone: (417) 345-5926

65700-19-03 IEC/IEEE International Standard -- Bushings for DC application 2014 12/31/2024 No active PAR

C57.19.00 IEEE Standard General Requirements and Test Procedure for Power Apparatus Bushings

2004 12/31/2020 PAR expires 2022

C57.19.01 IEEE Approved Draft Standard for Performance Characteristics and Dimensions for Transformer and Reactor Bushings

2017 12/31/2027 No active PAR

C57.19.100 IEEE Guide for Application of Power Apparatus Bushings 2012 12/31/2022 No active PAR

Dielectric Test SC Chair: Ajith Varghese email: ajith.varghese@spx.com phone: (262) 442-7197

C57.98 IEEE Guide for Transformer Impulse Tests 2011 12/31/2021 No active PAR

C57.113 IEEE Recommended Practice for Partial Discharge Measurement in Liquid-Filled Power Transformers and Shunt Reactors

2010 12/31/2020 No active PAR

C57.127 IEEE Guide for the Detection and Location of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers and Reactors

2007 12/31/2018 Sponsor Ballot: Comment Resolution PAR expires 2019

C57.138 IEEE Recommended Practice for Routine Impulse Tests for Distribution Transformers 2016 12/31/2026 No active PAR

Spring 2018 Standards Report Page 11 of 20

Standard Number

Title Year SASB

Expiration Notes

Distribution Transformers SC Chair: Steve Shull email: sshull@empiredistrict.com phone: (417) 625-611

C57.12.20 IEEE Standard for Overhead-Type Distribution Transformers 500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 7970/13 800Y V and Below

2017 12/31/2027 No active PAR

C57.12.28 IEEE Standard for Pad-Mounted Equipment--Enclosure Integrity 2014 12/31/2024 No active PAR

C57.12.29 IEEE Standard for Pad-Mounted Equipment--Enclosure Integrity for Coastal Environments

2014 12/31/2024 No active PAR

C57.12.30 IEEE Standard for Pole-Mounted Equipment--Enclosure Integrity for Coastal Environments

2010 12/31/2020 No active PAR

C57.12.31 IEEE Standard for Pole-Mounted Equipment--Enclosure Integrity 2010 12/31/2020 No active PAR

C57.12.31 2010/Cor 1

IEEE Standard for Pole-Mounted Equipment--Enclosure Integrity - Corrigendum 1: Correction to the SCAB Corrosion Test in 4.5.6

2014 12/31/2024 No active PAR

C57.12.32 IEEE Standard for Submersible Equipment - Enclosure Integrity 2002 12/31/2018 WG Draft Development Par expires 2019

C57.12.34

IEEE Standard Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers, 10 MVA and Smaller; High-Voltage, 34.5 kV Nominal System Voltage and Below; Low-Voltage, 15 kV Nominal System Voltage and Below

2015 12/31/2025

C57.12.35 IEEE Standard Bar Coding for Distribution Transformers and Step-Voltage Regulators

2013 12/31/2023 No active PAR

C57.12.36 IEEE Standard Requirements for Liquid-Immersed Distribution Substation Transformers

2017 12/31/2027 No active PAR

Spring 2018 Standards Report Page 12 of 20

Standard Number

Title Year SASB

Expiration Notes

Distribution Transformers

SC Chair: Steve Shull email: sshull@empiredistrict.com phone: (417) 625-611

C57.12.37 IEEE Standard for the Electronic Reporting of Distribution Transformer Test Data 2015 12/31/2025 No active PAR

C57.12.38 IEEE Standard for Pad-Mounted-Type, Self-Cooled, Single-Phase Distribution Transformers 250 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 V and Below; Low Voltage, 480/240 V and Below

2014 12/31/2024

C57.12.38 2014/Cor 1 IEEE Standard for Pad-Mounted-Type, Self-Cooled, Single-Phase Distribution Transformers 250 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 V and Below; Low Voltage, 480/240 V and Below - Corrigendum 1: Figure 1A

2016 12/31/2026

C57.12.39 IEEE Approved Draft Standard Requirements for Distribution Transformer Tank Pressure Coordination

2017 12/31/2027 No active PAR

C57.15 IEEE Approved Draft Standard Requirements, Terminology, and Test Code for Step-Voltage Regulators

2017 12/31/2027 No active PAR

Standard Number

Title Year SASB

Expiration Notes

Dry Type Transformers

SC Chair: C.W. Johnson email: charles.w.johnson@us.abb.com phone: (276) 688-1512

259 IEEE Standard Test Procedure for Evaluation of Systems of Insulation for Dry-Type Specialty and General-Purpose Transformers

1999 12/31/2020 NesCom Agenda 26-Apr-2018

C57.12.01 IEEE Standard for General Requirements for Dry-Type Distribution and Power Transformers

2015 12/31/2025

Spring 2018 Standards Report Page 13 of 20

Standard Number

Title Year SASB

Expiration Notes

Dry Type Transformers

SC Chair: C.W. Johnson email: charles.w.johnson@us.abb.com phone: (276) 688-1512

C57.12.51 IEEE Standard for Ventilated Dry- Type Power Transformers, 501 kVA and Larger, Three-Phase, with High- Voltage 601 V to 34 500 V; Low- Voltage 208Y/120 V to 4160 V- General Requirements

2008 12/31/2018 WG Draft Development Par expires 2018

C57.12.52 IEEE Standard for Sealed Dry-Type Power Transformers, 501 kVA and Higher, Three-Phase, with High-Voltage 601 to 34500 Volts, Low-Voltage 208Y/120 to 4160 Volts--General Requirements

2012 12/31/2022 No active PAR

C57.12.58 IEEE Guide for Conducting a Transient Voltage Analysis of a Dry-Type Transformer Coil

2017 12/31/2027 No active PAR

C57.12.59 IEEE Guide for Dry-Type Transformer Through-Fault Current Duration 2015 12/31/2025 No active PAR

C57.12.60 IEEE Standard Test Procedure for Thermal Evaluation of Insulation Systems for Dry-Type Power and Distribution Transformers, Including Open-Wound, Solid-Cast, and Resin-Encapsulated Transformers

2009 12/31/2019

C57.12.60 2009/Cor 1 IEEE Standard Test Procedure for Thermal Evaluation of Insulation Systems for Dry-Type Power and Distribution Transformers, Including Open-Wound, Solid-Cast, and Resin-Encapsulated Transformers

2013 12/31/2023

C57.12.91 IEEE Standard Test Code for Dry-Type Distribution and Power Transformers 2011 12/31/2021

C57.16 IEEE Standard for Requirements, Terminology, and Test Code for Dry-Type Air-Core Series-Connected Reactors

2011 12/31/2021

C57.94 IEEE Recommended Practice for Installation, Application, Operation, and Maintenance of Dry-Type Distribution and Power Transformers

2015 12/31/2025 No active PAR

C57.96 IEEE Guide for Loading Dry-Type Distribution and Power Transformers 2013 12/31/2023 No active PAR

C57.124 IEEE Recommended Practice for the Detection of Partial Discharge and the Measurement of Apparent Charge in Dry-Type Transformers

1991 12/31/2019

C57.134 IEEE Guide for Determination of Hottest-Spot Temperature in Dry-Type Transformers 2013 12/31/2023 No active PAR

Spring 2018 Standards Report Page 14 of 20

Standard Number

Title Year SASB

Expiration Notes

HVDC Converter Transformers & Smoothing Reactors

SC Chair: Mike Sharp email: mikes@ca.trenchgroup.com phone: 416-298-8108

1277 IEEE Standard General Requirements and Test Code for Dry-Type and Oil-Immersed Smoothing Reactors for DC Power Transmission

2010 12/31/2020

60076-57-129 IEC/IEEE International Standard - Power transformers--Part 57-129: Transformers for HVDC applications

2017 12/31/2027 No active PAR

Insulating Fluids SC Chair: Dave Wallach email: david.wallach@duke-energy.com phone: (980) 373-4167

C57.104 IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers

2008 12/31/2018 Sponsor Ballot: PreBallot PAR expires 2019

C57.106 IEEE Guide for Acceptance and Maintenance of Insulating Mineral Oil in Electrical Equipment

2015 12/31/2025 No active PAR

C57.111 IEEE Guide for Acceptance of Silicone Insulating Fluid and Its Maintenance in Transformers

1989 12/31/2019 No active PAR

C57.121 IEEE Guide for Acceptance and Maintenance of Less-Flammable Hydrocarbon Fluid in Transformers

1998 12/31/2019 No active PAR

C57.130 IEEE Guide for the Use of Dissolved Gas Analysis Applied to Factory Temperature Rise Tests for the Evaluation of Mineral Oil-Immersed Transformers and Reactors

2015 12/31/2025 No active PAR

C57.139 IEEE Guide for Dissolved Gas Analysis in Transformer Load Tap Changers 2015 12/31/2025 No active PAR

C57.146 IEEE Guide for Interpretation of Gasses Generated in Silicone-Immersed Transformers 2005 12/31/2021 No active PAR

C57.147 IEEE Approved Draft Guide for Acceptance and Maintenance of Natural Ester Insulating Liquid in Transformers

2018 12/31/2028 No active PAR

Spring 2018 Standards Report Page 15 of 20

Standard Number

Title Year SASB

Expiration Notes

Insulating Fluids SC Chair: Dave Wallach email: david.wallach@duke-energy.com phone: (980) 373-4167

C57.155 IEEE Guide for Interpretation of Gases Generated in Natural Ester and Synthetic Ester-Immersed Transformers

2014 12/31/2024 No active PAR

C57.637 IEEE Guide for the Reclamation of Mineral Insulating Oil and Criteria for Its Use 2015 12/31/2025 No active PAR

Insulation Life SC Chair: Sheldon Kennedy email: skennedy@niagaratransformer.com phone: (716) 896-6500

1276 IEEE Guide for the Application of High-Temperature Insulation Materials in Liquid-Immersed Power Transformers

1997 12/31/2018 WG Draft Development PAR expires 2018

1538 IEEE Guide for Determination of Maximum Winding Temperature Rise in Liquid-Filled Transformers

2000 12/31/2021 No active PAR

1538a IEEE Guide for Determination of Maximum Winding-Temperature Rise in Liquid Immersed Transformers -- Amendment 1

2015 12/31/2025 No active PAR

C57.91 IEEE Guide for Loading Mineral-Oil-Immersed Transformers and Step-Voltage Regulators

2011 12/31/2021

C57.100 IEEE Standard Test Procedure for Thermal Evaluation of Insulation Systems for Liquid-Immersed Distribution and Power Transformers

2011 12/31/2021 No active PAR

C57.119 IEEE Recommended Practice for Performing Temperature Rise Tests on Oil-Immersed Power Transformers at Loads Beyond Nameplate Ratings

2001 12/31/2018 RevCom Agenda 26-Apr-2018 PAR expires 2018

C57.154 IEEE Standard for the Design, Testing, and Application of Liquid-Immersed Distribution, Power, and Regulating Transformers Using High-Temperature Insulation Systems and Operating at Elevated Temperatures

2012 12/31/2022 No active PAR

Spring 2018 Standards Report Page 16 of 20

Standard Number

Title Year SASB

Expiration Notes

Instrument Transformers

SC Chair: Ross McTaggart email: rossdm@ca.trenchgroup.com phone: (416) 751-8570

C57.13 IEEE Standard Requirements for Instrument Transformers 2016 12/31/2026 No active PAR

C57.13.2 IEEE Standard for Conformance Test Procedure for Instrument Transformers 2005 12/31/2020

C57.13.5 IEEE Standard of Performance and Test Requirements for Instrument Transformers of a Nominal System Voltage of 115 kV and Above

2009 12/31/2019

C57.13.6 IEEE Standard for High Accuracy Instrument Transformers 2005 12/31/2020 No active PAR

Standard Number

Title Year SASB

Expiration Notes

Performance Characteristics

SC Chair: Ed TeNyenhuis email: ed.g.tenyenhuis@ca.abb.com phone: (519) 837-4691

C57.18.10 IEEE Standard Practices and Requirements for Semiconductor Power Rectifier Transformers

1998 12/31/2019

C57.21 IEEE Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500 kVA

2008 12/31/2018 WG Draft Development PAR expires 2018

C57.32 IEEE Standard for Requirements, Terminology, and Test Procedures for Neutral Grounding Devices

2015 12/31/2025 Amendment PAR expires 2021

C57.105 IEEE Guide for Application of Transformer Connections in Three-Phase Distribution Systems

1978 12/31/2018 WG Draft Development PAR expires 2019

Spring 2018 Standards Report Page 17 of 20

Table 1

Standard Number

Title Year SASB

Expiration Notes

Performance Characteristics

SC Chair: Ed TeNyenhuis email: ed.g.tenyenhuis@ca.abb.com phone: (519) 837-4691

C57.109 IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration 1993 12/31/2018 Sponsor Ballot: Comment Resolution Par expires 2019

C57.110 IEEE Recommended Practice for Establishing Liquid-Filled and Dry-Type Power and Distribution Transformer Capability When Supplying Nonsinusoidal Load Currents

2008 12/31/2018 Sponsor Ballot: Comment Resolution Par expires 2018

C57.120 IEEE Guide for Loss Evaluation of Distribution and Power Transformers and Reactors 2017 12/31/2027 No active PAR

C57.123 IEEE Guide for Transformer Loss Measurement 2010 12/31/2020

C57.136 IEEE Guide for Sound Level Abatement and Determination for Liquid-Immersed Power Transformers and Shunt Reactors Rated Over 500 kVA

2000 12/31/2018 No active PAR

C57.142 IEEE Guide to Describe the Occurrence and Mitigation of Switching Transients Induced by Transformers, Switching Device, and System Interaction

2010 12/31/2020

C57.149 IEEE Guide for the Application and Interpretation of Frequency Response Analysis for Oil-Immersed Transformers

2012 12/31/2022 No active PAR

C57.158 IEEE Approved Draft Guide for the Application of Tertiary and Stabilizing Windings in Power Transformers

2017 12/31/2027

C57.159 IEEE Guide on Transformers for Application in Distributed Photovoltaic (DPV) Power Generation Systems

2016 12/31/2026 No active PAR

Spring 2018 Standards Report Page 18 of 20

Standard Number

Title Year SASB

Expiration Notes

Power Transformers SC Chair: Bill Griesacker email: bgriesacker@doble.com phone: (617) 393-3074

638 IEEE Standard for Qualification of Class 1E Transformers for Nuclear Power Generating Stations

2013 12/31/2023 No active PAR

60076-57-1202 IEC/IEEE International Standard Power transformers --Part 57-1202: Liquid immersed phase-shifting transformers

2016 12/31/2026 No active PAR

C57.12.10 IEEE Approved Draft Standard Requirements for Liquid-Immersed Power Transformers 2017 12/31/2027 No active PAR

C57.17 IEEE Standard Requirements for Arc Furnace Transformers 2012 12/31/2022 No active PAR

C57.93 IEEE Guide for Installation and Maintenance of Liquid-Immersed Power Transformers

2007 12/31/2018 Sponsor Ballot: Invitation PAR expires 2018

C57.116 IEEE Guide for Transformers Directly Connected to Generators 2014 12/31/2024 No active PAR

C57.125 IEEE Guide for Failure Investigation, Documentation, Analysis, and Reporting for Power Transformers and Shunt Reactors

2015 12/31/2025 No active PAR

C57.131 IEEE Standard Requirements for Tap Changers 2012 12/31/2022 No active PAR

C57.135 IEEE Guide for the Application, Specification, and Testing of Phase-Shifting Transformers

2011 12/31/2021 No active PAR

C57.140 IEEE Guide for Evaluation and Reconditioning of Liquid Immersed Power Transformers 2017 12/31/2027 No active PAR

C57.143 IEEE Guide for Application for Monitoring Equipment to Liquid-Immersed Transformers and Components

2012 12/31/2022

C57.148 IEEE Standard for Control Cabinets for Power Transformers 2011 12/31/2021

Spring 2018 Standards Report Page 19 of 20

Standard Number

Title Year SASB

Expiration Notes

Standards SC Chair: Jerry Murphy email: jerry.murphy@ieee.org phone: (407) 824-4194

C57.12.00 IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers

2015 12/31/2025

C57.12.90 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers

2015 12/31/2025

C57.12.90 2015/Cor 1 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers Corrigendum 1:Editorial and Technical Corrections

2017 12/31/2027

C57.12.70 IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers

2011 12/31/2021 Corrigendum PAR expires 2012

C57.12.80 IEEE Standard Terminology for Power and Distribution Transformers 2010 12/31/2020

C57.144 IEEE Guide for Metric Conversion of Transformer Standards 2004 12/31/2020 No active PAR

C57.152 IEEE Guide for Diagnostic Field Testing of Fluid-Filled Power Transformers, Regulators, and Reactors

2013 12/31/2023 No active PAR

C57.163 IEEE Guide for Establishing Power Transformer Capability while under Geomagnetic Disturbances

2015 12/31/2025 No active PAR

C57.163-2015 /Cor 1 IEEE Guide for Establishing Power Transformer Capability while under Geomagnetic Disturbances - Corrigendum 1

2016 12/31/2026

Spring 2018 Standards Report Page 20 of 20

Standard Number

Title Year SASB

Expiration Notes

Subsurface Transformers & Network Protectors

SC Chair: Dan Mulkey email: dhmuhlkey@ieee.org phone: (707) 776-7346

C57.12.23 IEEE Standard for Submersible Single-Phase Transformers: 167 kVA and Smaller; High Voltage 25 000 V and Below; Low Voltage 600 V and Below

2009 12/31/2019 PAR expires 2018

C57.12.24 IEEE Standard for Submersible, Three-Phase Transformers, 3750 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 600 Volts and Below

2016 12/31/2026 No active PAR

C57.12.40 IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed)

2017 12/31/2027 No active PAR

C57.12.44 IEEE Standard Requirements for Secondary Network Protectors 2014 12/31/2024

Spring 2018 Standards Report Appendix A

Appendix A

Transformers Committee Organization Chart

Transformer Committee Organization Chart Rev 2018-03-12 Page 1 of 7

IEEE/PES Transformers Committee Chair: Susan McNelly

Vice-Chair: Bruce Forsyth Secretary: Ed teNyenhuis Treasurer: Paul Boman Past Chair: Stephen Antosz Standards Coordinator: James Graham

Dry Type Transformers Chair: Charles W. Johnson

(page OC-2)

Power Transformers Chair: Bill Griesacker

(page OC-3)

HV Converters & Smooting Reactors Chair: Michael Sharp

(page OC-3)

Standards Chair: Jerry Murphy

(page OC-7)

Instrument Transformers Chair: Ross McTaggart

(page OC-4)

Subsurface Transformers & Network Protectors

Chair: Dan Mulkey (page OC-3)

Meeting Planning Chair: Tammy Behrens

(page OC-7)

Bushings Chair: Peter Zhao

(page OC-4)

Insulating Fluids Chair: Dave Wallach

(page OC-6)

Dielectric Tests Chair: Ajith Varghese

(page OC-5)

Insulation Life Chair: Sheldon Kennedy

(page OC-6)

Distribution Transformers Chair: Steve Shull

(page OC-2)

Performance Characteristics Chair: Craig Stiegemeier

(page OC-5)

Transformer Committee Organization Chart Rev 2018-03-12 Page 2 of 7

Distribution Transformers Chair - Stephen Shull

C57.12.34 Gen Requirements 3-PH Pad Mount

Ron Stahara

C57.12.35 Bar Coding

Lee Matthews

C57.12.36 Dist Sub Xfmrs Jerry Murphy

C57.12.37 / IEEE 1388 Elec Rpt of Test Data

Thomas Callsen

C57.12.38 1-PH Pad Mount

Self-cool <2500 KVA Ali Ghafourian

C57.12.39 Dist Tank Pressure

Carlos Gaytan

C57.15 Step Voltage Regulators

Craig Colopy

Task Force Dist Xfmrs

Monitoring Guide (OPEN)

TF - DOE Activity Distr Xfmr

Efficiency & Loss Phil Hopkinson

C57.12.20 OH Distribution Xfmrs

Alan Traut

C57.12.28,C57.12.29 C57.12.30, C57.12.31

& C57.12.32 Equip Enclosure Integrity

Dan Mulkey

Dry Type Transformers Chair - Charles W. Johnson

C57.12.52 Gen Requirements Sealed > 500 KVA Sheldon Kennedy

C57.12.58 Transient Analysis

Roger Wicks

C57.12.59 Dry Type Through Fault

Current Duration Paulette Payne

C57.12.60 Thermal Eval of Dry Type Xfmrs

Roger Wicks

C57.12.91 Test Code

Dry Type Xfmrs David Walker

C57.16 Dry Type

Air Core Reactors Arturo Del Rio

C57.94 Dry Type Xfmrs

Op & Maint Guide David Stankes

C57.96 Loading Guide Dry Type Xfmrs

Rick Marek

C57.124 Dry Type PD &

Apparent Charge Tom Prevost

C57.134 Dry Type Xfmrs

Hottest Spot Paulette Payne

IEEE 259 Eval - Dry Type Xfmrs

Insulation Systems David Stankes

C57.12.01 Gen Requirements

Dry Type Xfmrs Casey Ballard

C57.12.51 Gen Requirements

Vented 3-PH > 500 KVA Sanjib Som

Transformer Committee Organization Chart Rev 2018-03-12 Page 3 of 7

HVDC Converter Transformers & Smoothing Reactors

Chair - Michael Sharp

IEEE 1277 Requirements & Test Code for Smoothing

Reactors Klaus Pointner

C57.129 Requirements

& Test Code for HVDC Converter Xfmrs

Ulf Radbrandt

Subsurface Transformers & Network Protectors

Chair - Dan Mulkey

C57.12.24 Cont Revision

Submersible 3Ø Xfmrs >2500 KVA

Guiseppi Termini

C57.12.40 Sec Network Xfmrs

Cont Revision Brian Kaplonski

C57.12.44 Sec Network Protectors

Cont Revision Mark Faulkner

C57.12.23 Cont. Revision

Submersible 1Ø Xfmrs Allan Traut

Power Transformers Chair - Bill Griesacker

60214-1-57-131 Gen Requirements

Tap Changers Craig Colopy

60214-2 Application Guide

Tap Changers Craig Colopy

60076-57-1202 Requirements - Phase Shifters

Raj Ahuja

C57.12.10 Req -Power Xfmrs

Gary Hoffman

C57.17 Arc Furnace Xfmrs

Robert Ganser

C57.93 Installation Guide

Mike Lau

C57.116 Direct Connect GSU

Gary Hoffman

C57.125 Failure Investigations

Wally Binder

C57.135 Phase-Shift Xfmrs

Raj Ahuja

C57.140 Reconditioning

Power Xfmrs Paul Boman

C57.143 Monitoring Guide Michael Spurlock

C57.148 Cont Cabinet Guide

Joe Watson

C57.150 Transportation Guide

Greg Anderson

C57.153 Paralleling Guide

Tom Jauch

C57.156 Tank Rupture Guide

Peter Zhao

C57.157 Functional Life Tests

- Switch Contacts Phil Hopkinson

IEEE 638 1E Xfmrs at

Nuclear Stations Craig Swinderman

Transformer Committee Organization Chart Rev 2018-03-12 Page 4 of 7

Instrument Transformers Chair - Ross McTaggart

C57.13.2 Test Procedures

Instrument Xfmrs Thomas Sizemore

C57.13.5 Test Requirements

Instr Xfmrs ≥ 115 kV Pierre Riffon

C57.13.6 Requirements

High Accuracy Instr Xfmrs (OPEN)

C57.13.7 Requirements mA CT

Henry Alton

C57.13.8 Requirements SSVTs

Dave Wallace

C57.13.9 Requirements CCVTs

Zoltan Roman

C57.13 Requirements

Instrument Xfmrs Ross McTaggart

Bushings Chair - Peter Zhao

C57.19.01 Performance

Characteristics Outdoor Bushings

Shibao Zhang

C57.19.02 Performance

Characteristics Dist Xfmr Bushings

Steve Shull

65700-19-03 Requirements

& Testing DC Bushings

Leslie Recksiedler

C57.19.04 Performance

Characteristics GSU Bushings

Scott Digby

C57.19.100 Bushing

Application Guide Thomas Spitzer

C57.19.00 Gen. Requirements

Bushings Peter Zhao

Transformer Committee Organization Chart Rev 2018-03-12 Page 5 of 7

Dielectric Tests Chair - Ajith Varghese

C57.113 PD Measurement

Ali Naderian

C57.127 Acoustic PD Guide

Detlev Gross

C57.138 Impulse Test Guide

(OPEN)

C57.160 PD Measurement

Bushings & Instr Xfmrs Thang Hochanh

C57.161 DFR Test Guide

Ali Naderian

Task Force Impulse Tests Cont Revision

Pirre Riffon

Task Force Low Freq Test Guide

Daniel Sauer

Task Force Low Freq Tests Cont Revision Bill Griesacker

C57.98 Impulse Tests Guide

(OPEN)

Performance Characteristics Chair - Craig Stiegemeier

TF-PCS Revisions C57.12.00

Tauhid Ansari

TF-PCS Revisions C57.12.90

Hakan Sahin

C57.18.10 Semicon Rectifier Xfmrs

Sheldon Kennedy

C57.21 Req & Test Code

Reactors >500 KVA Sanjib Som

C57.32 Neutral Gnd Devices

Sheldon Kennedy

C57.32a (Amend) Neutral Gnd Devices

Sergio Panetta

C57.105 Xfmr Connections Guide

Roger Verdolin

C57.109 Through Fault Current

Duration Vinay Mehrota

C57.110 Nonsinusoidal Load Currents

Rick Marek

C57.120 Loss Evaluation Guide

Roger Verdolin

C57.123 Xfmr Loss Measurement

Ed teNyenhuis

C57.136 Sound Level Abatement

Stephen Antosz

C57.142 Sw Transients CB/Xfmr

Jim McBride

C57.149 FRA for

Oil Immersed Xfmrs Charles Sweetserm

C57.158 Tert & Stabilizing

Windings Enrique Betancourt

C57.159 DPV Grid Xfmrs Hem Shertukde

C57.164 Short Ckt Withstand

Sanjay Patel

60076-16 Wind Farm Xfmrs Phil Hopskinson

Transformer Committee Organization Chart Rev 2018-03-12 Page 6 of 7

Insulating Fluids Chair - Dave Wallach

C57.121 Less Flammable

Hydrocarbon Guide David Sundin

C57.130 DGA Guide

Thermal Tests Jim Thompson

C57.139 DGA Guide

LTCs Dave Wallach

C57.146 DGA Guide Silicone Oil

C57.147 Ester Fluids Guide Patrick McShane

C57.155 DGA Guide Ester Fluids Paul Boman

C57.166 Fluids Guides Consolidation Tom Prevost

C57.637 Mineral Oil

Reclamation Jim Thompson

C57.104 DGA Guide Mineral Oil

Claude Beauchemin

C57.106 Mineral Oil Guide

Bob Rasor

C57.111 Silicone Oil Guide

Paul Boman

Insulation Life Chair - Sheldon Kennedy

C57.119 Temp Test

Above NP Rating Gael Kennedy

C57.154 Requirements

Hi Temp Insulation Rick Marek

C57.154a Hi Temp Insulation

Annex B Robert Thompsom

C57.162 Moisture in Insulation

Tom Prevost

C57.165 Temp Measurement

Guide Phil McClure

IEEE 1276 High Temp Insulation

Guide Roger Wicks

IEEE 1538 Max Winding

Temperature Rise Don Platts

C57.91 Loading Guide Dave Wallach

C57.100 Thermal Eval Insulation

Roger Wicks

Transformer Committee Organization Chart Rev 2018-03-12 Page 7 of 7

Standards Chair - Jerry Murphy

C57.12.90 Cont Revision

Stephen Antosz

C57.12.70 Terminal Markings

& Connections Steve Shull

C57.12.80 Terminology

Clair Claiborne

C57.144 Metric Conversion

(OPEN)

C57.152 Field Testing Guide

(OPEN)

C57.163 Xfmrs GMD Guide

(OPEN)

C57.12.00 Cont Revision Steve Snyder

Meeting Planning Chair - Tammy Behrens

Committee History

Peter Balma

Web Site Development Sue McNelly

RFID Kris Zibert

Educational Development Tom Prevost

Spring 2018 Standards Report Appendix B

Appendix B

IEEE Standards Association Meeting Schedule

January

S M T W TH F S 1 2 3 4 5 6

7 8 9 10 11 12 13

14 15 16 17 18 19 20

21 22 23 24 25 26 27

28 29 30 31

February

S M T W TH F S 1 2 3

4 5 6 7 8 9 10

11 12 13 14 15 16 17

18 19 20 21 22 23 24

25 26 27 28

March

S M T W TH F S 1 2 3

4 5 6 7 8 9 10

11 12 13 14 15 16 17

18 19 20 21 22 23 24

25 26 27 28 29 30 31

April

S M T W TH F S 1 2 3 4 5 6 7

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30

May

S M T W TH F S 1 2 3 4 5

6 7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25 26

27 28 29 30 31

June

S M T W TH F S 1 2

3 4 5 6 7 8 9

10 11 12 13 14 15 16

17 18 19 20 21 22 23

24 25 26 27 28 29 30

July

S M T W TH F S 1 2 3 4 5 6 7

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

August

S M T W TH F S 1 2 3 4

5 6 7 8 9 10 11

12 13 14 15 16 17 18

19 20 21 22 23 24 25

26 27 28 29 30 31

September

S M T W TH F S 1

2 3 4 5 6 7 8

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30 6 7

October

S M T W TH F S 1 2 3 4 5 6

7 8 9 10 11 12 13

14 15 16 17 18 19 20

21 22 23 24 25 26 27

28 29 30 31

November

S M T W TH F S 1 2 3

4 5 6 7 8 9 10

11 12 13 14 15 16 17

18 19 20 21 22 23 24

25 26 27 28 29 30

December

S M T W TH F S 1

2 3 4 5 6 7 8

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30 31 6 7

IEEE Standards Association Governance Meetings Schedule

JANUARY JULY

30: NesCom/RevCom teleconferences

FEBRUARY AUGUST

07-08: BOG meeting, Johannesburg, South Africa (outreach events on 5th, 6th, and 9th)

14-19: IEEE BOD series, Lake Buena Vista, Florida, USA SEPTEMBER

MARCH 06: NesCom/RevCom teleconferences 06-08: SASB series, Tokyo, Japan (outreach events on 5th and 9th)

10-13: CAG meeting/outreach, Atlanta, Georgia, USA

APRIL 27: SASB teleconference 16-19: CAG meeting/outreach, Shenzhen, PRC OCTOBER

26: NesCom/RevCom teleconferences

MAY NOVEMBER 16-17: BOG meeting, Vienna, Austria (outreach events on 14th, 15th, and 18th)

14-19: IEEE BOD series, Vancouver, British Columbia, Canada

JUNE 28-29: CAG meeting, Piscataway, New Jersey, USA

12-14: SASB series, The Hague, Netherlands (outreach events on 11th and 15th)

30: BOG meeting, Piscataway, New Jersey, USA

20–25: IEEE BOD series, New Brunswick, New Jersey, USA DECEMBER

01: BOG meeting, Piscataway, New Jersey, USA

02: SA Awards Ceremony, Somerset, New Jersey, USA

03-05: SASB series, Piscataway, New Jersey, USA

NesCom/RevCom Submittal Deadlines: 20 December 2017 26 January 2018 16 March 2018 04 May 2018 27 July 2018 15 October 2018

2018

28 August 2017

APPENDIX 3

IEC TC14 Liaison Report

5/15/2018

1

IEC TC 14 Philip J Hopkinson, PE & TA

• International Electro‐Technical Commission TC 14 Power Transformers

• Voting Relationships between standards

• P‐Member Active Countries

• Members of US TAG

• Documents and Programs

• Last Plenary Meeting October 26‐27, 2017 in Watertown, MA

• Meeting this year September 20‐21 in Glasgow, UK 

• Stability Dates

IEEE Transformers Committee 032116 1

IEC TC 14 Philip J Hopkinson, PE & TA

• International Electro‐Technical Commission TC 14 Power Transformers:• Headquartered in Geneva, Switzerland

• Scope > = 10 kVA, Voltage classes >1,000 Volts, ac and dc

• Voting Relationships between standards organizations• IEEE and Cigre:   1 person, 1 vote

• NEMA and EEI:   1 company, 1 vote

• IEC: 1 country, 1 vote

• All votes cast by Technical Advisers to National Committees to Geneva

IEEE Transformers Committee 032116 2

5/15/2018

2

IEC TC 14 Philip J Hopkinson, PE & TA

NEW ANSI Directives to be discussed  in Wednesday Meeting:

1. IEC and IEEE and ISO are International Stds Organizations

2. Joint IEC and IEEE Documents can issue as ANSI Documents

3. IEC can Adopt IEEE Documents

4. IEEE cannot adopt IEC Documents

5. IEEE Stds can become ANSI Stds by selecting intent on PAR Submission

Malia Zaman and Erin Spiewak asked to join us as possible.

IEEE Transformers Committee 032116 3

IEC TC 14 Philip J Hopkinson, PE & TA

Member Countries in IEC TC 14

IEEE Transformers Committee 032116 4

5/15/2018

3

IEC TC 14 Philip J Hopkinson, PE & TA

US TAG in IEC TC 14 as currently active

IEEE Transformers Committee 032116 5

US Tag Requirements

1. US citizens2. Pay annual dues3. Genuine interest

We welcome new Members

1. Observers welcome from US 2. Observers welcome internationally too3. Breakfast meeting Wednesday

IEC TC 14 Philip J Hopkinson, PE & TA

Attendance in Watertown, MA. USA on October 26‐27, 2017

IEEE Transformers Committee 032116 6

5/15/2018

4

IEC TC 14 Philip J Hopkinson, PE & TA

Current statistics

28 Documents

14 Current Active Projects

IEEE Transformers Committee 032116 7

IEC TC 14 Philip J Hopkinson, PE & TA

17 Active Projects MT 2014 Tap Changers

76‐4 Impulse Tests MT 61378‐3 Converter Transformers

76‐5 Short Circuit WG 33 DC Neutral Current Blockers

76‐7 Liquid Loading Guide WG 34 Voltage Regulating Transformers 76‐10 Audible Noise AHG 1 Insulating Liquids in Transformers

76‐11 Dry Types76‐14 Liquid High Temperature

76‐16 Wind Power

76‐19 Uncertainty in Loss Measure76‐20 Energy Efficiency76‐21 Step Voltage Regulators

76‐22 Accessories & Fittings76‐57‐129 HVDC

IEEE Transformers Committee 032116 8

5/15/2018

5

IEC TC 14 Philip J Hopkinson, PE & TA

Stability Dates

IEEE Transformers Committee 032116 9

IEC TC 14 Philip J Hopkinson, PE & TA

Come to my meeting at 7:00 AM Wednesday, March 28 in Room Three Rivers

Better yet, Join the TAG!

IEEE Transformers Committee 032116 10

APPENDIX 4

CIGRE Liaison Report

IEEE PES Transformers Committee - Pittsburgh, PA, USA, March 26th-29th, 2018

Liaison Report on SCA2 Transformers for IEEE Transformers Committee Meeting

March 2018, Pittsburgh

CIGRÉInternational Council on Large Electrical

Systems

Craig Swinderman

Study CommitteesSC A1: Rotating Electrical Machines

SC A2: Transformers

SC A3: High Voltage Equipment

SC B1: Insulated Cables

SC B2: Overhead Lines

SC B3: Substations

SC B4: HVDC and Power Electronics

SC B5: Protection and Automation

SC C1: System Development and Economics

SC C2: System Operation and Control

SC C3: System Environmental Performance

SC C4: System Technical Performance

SC C5: Electricity Markets and Regulation

SC C6: Distribution Systems and Dispersed Generation

SC D1: Materials and Emerging Test Techniques

SC D2: Information Systems and Telecommunication

IEEE PES Transformers Committee - Pittsburgh, PA, USA, March 26th-29th, 2018 2

SC A2 ActivitiesWorking Group Topic Summary

A2.43 Bushing Reliability In process

A2.45 Transformer Failure Investigation In process

A2/D1.46 Field Experience with transformer solid insulation In process

D1/A2.47 New Frontiers of DGA Interpretation for Power Transformers and Their Accessories In process

A2.49 Condition Assessment of Power Transformers In process

A2/D1.51 PD Measurements In process

A2/C4.52 HF Transformer and Reactor Models In process

A2.53 FRA Interpretation In process

A2.54 Audible Sound Requirements In process

A2.55 Transformer Life Extension In process

A2.56 Transformer Efficiency In process

A2.57 Effects of DC Bias In process

A2.58 Site Installation and Pre-commissioning of Power Transformers and Shunt Reactors In process

A2.59 On-site assembly, On-site Rebuild, and On-site Testing of Power Transformers In process

IEEE PES Transformers Committee - Pittsburgh, PA, USA, March 26th-29th, 2018 3

Possible New Working Group

A2/D1: possible Task Force on Degree of Polymerization of new and aged cellulosic electrical insulating materials

IEEE PES Transformers Committee - Pittsburgh, PA, USA, March 26th-29th, 2018 4

Recent Publications

• A2.45: Transformer Post-Mortem Analysis

Will be part of a SC A2 Tutorial Presentation at upcoming CIGRÉ Session 47.

IEEE PES Transformers Committee - Pittsburgh, PA, USA, March 26th-29th, 2018 5

Upcoming Events

CIGRÉ Session 47• Paris, France, August 26-31, 2018

Preferential Topics for A2:1. Thermal Characteristics of Transformers2. Advances in Diagnostics and Modelling3. Site Commissioning Tests

CIGRÉ US Committee 2018 Grid of the Future• Reston, VA, October 28-31, 2018

A2/B3 Study Committee Colloquium• Delhi, India 2019

IEEE PES Transformers Committee - Pittsburgh, PA, USA, March 26th-29th, 2018 6

A2 Liaison Report

THANK YOU!

IEEE PES Transformers Committee - Pittsburgh, PA, USA, March 26th-29th, 2018 7

APPENDIX 5

STANDARDS COORDINATING COMMITTEE NO. 18 (NFPA/NEC)

To: Susan McNelly, Chair

IEEE Transformers Committee

Date: March 26, 2018

Subject: Changes proposed to 2020 NEC Section 450, Transformers

Summary: Changes that were accepted at the First Revision meetings were mainly editorial in

nature. There seems to be nothing substantive that was enacted.

The significant items seem to be:

Sec. 450.3(B)

Proposed A new footnote 4 was proposed to be added to Table 450.3B as follows:

“Refer to 240.21 (C)(1) and 408.36 (B); transformer secondary overcurrent protection may be

required for secondary conductor protection or panelboard protection.”.

Was RESOLVED (voted NO) as a violation of the Style Manual.

Sec 450.6(A)(1) removes the word “rated”:

In other words, the term “rated” is not correct when referring to ampacity.

Same was applied to 450.6 (A)(2)

Sec. 450.9

Adds the terms “and operation” and “shall operate as they have been tested to operate” because

some people felt that blocking ventilation ports or using the top as a shelf causes heat rise and

present language does not account for such operating parameters.

Sec 450.10

Improves clarity, not a substantive change.

450.21 (B) merely updates the ASTM Standard date and title.

450.27 same updating

450.42 same updating

450.43 (C)

Fire hardware is a more appropriate terminology.

450.45 (E) updated reference

450.46 is more interesting although RESOLVED (voted down):

This was rejected because environmental concerns are not a subject of this Code,

Note that final voting for the First Revision was due last Friday, March 23. Outcome of voting is

not known. Once recirculated to Panel members, it goes to the Correlating Committee. It will be

finally posted on July 6, 2018.

In any event, anyone in the public has an opportunity to make their views known or present

evidence why the vote should be changed. Public input must be received by 5 PM on August 30,

2018. The Web site is nfpa.org, and the NEC is NFPA 70.

Respectfully,

David Brender

Contact: dbrender@ieee.org or david.brender@copperalliance.us

APPENDIX 6

Meeting Planning

5/15/2018

1

SC Meetings PlanningSpring 2018 MeetingPittsburgh, PA

1

2

2016SpringAtlanta

2016Fall

Vancouver

2017Spring

New Orleans

2017Fall

Louisville

2018Spring

Pittsburgh

Attendees 556(564 – 8)

578(580 – 2)

601(604 – 3)

595(599 – 4)

626(635 – 9)

Spouses/Companions

65(65 – 0)

122(122 – 0)

87(89 – 2)

64(65 – 1)

73(73 – 0)

Meeting Attendance

5/15/2018

2

3

Meeting AttendanceAttendees: 626 (635 registered, minus ~9 no shows) Spouses/Companions: 73 (73 minus 0 no shows)

Sunday Event: 424 CAPACITY (vs. 423 in Louisville, 489 in New Orleans, 502 in Vancouver REGISTERED FOR FREE RECEPTION)

Mon Standards Lunch:  234 signed‐up (vs. 230/222/220 in LOU/NOLA/VAN)Tues Awards Lunch:  271 signed‐up (vs. 257/252/231 in LOU/NOLA/VAN)

Early Bird at Tequila Cowboy:  70/55 (vs. 33/64/26 in LOU/NOLA/VAN)

Spouse/Companion Tours‐Monday, Fallingwater:  50 (vs. 45/59/96 in LOU/NOLA/VAN)‐ Tuesday, Gems of Pittsburgh:  37 (vs. 43/52/53 in LOU/NOLA/VAN)

Meeting FeedbackDISCUSSION

4

5/15/2018

3

Considerations forFuture Meeting Sites‐ hosts‐ consideration of # of attendees‐ availability of technical tours and activities‐ walking distance restaurants‐ international airport

5

6

Future MeetingsFALL 2018 — October 14-18

Jacksonville, Florida USAHyatt Regency – starting at $149*** HOTEL RESERVATIONS

ACCEPTED STARTING 3/29/18***

SPRING 2019 — March 17-21 or 24-28Kansas City, Missouri USA orAnaheim, California USA

FALL 2019 — October 13-17Columbus, Ohio USA

5/15/2018

4

7

• Presentations & Tutorials:  Tom Prevost

• Break Sponsor:  Ed Smith

• Historian:  Peter Balma

• Website:  Sue McNelly

• Mobile App:  David Wallach

• RFID:  Kris Zibert and Daniel Weyer NEW VOLUNTEER 

• Meeting Schedule:  Jerry Murphy NEW VOLUNTEER ______________________________________________

• Registration Desk– Seaira Ford – Peter Balma

– Jennifer Quandel – PTTI host team

Meetings Subcommittee

BIG THANKS TO OUR PITTSBURGH HOSTS:

DENNIS & JANET BLAKE

PENNSYLVANIA TRANSFORMER TECHNOLOGY

5/15/2018

5

Volunteer Opportunities

9

10

• Vice chair for subcommittee

• Set up projectors in all meeting rooms before the first meeting of the week and check every morning for continued operation and remove after Tuesday/Wednesday meetings — need at least 2 people to work together on Monday, Tuesday and WednesdayNOTE: The hotel will have all the cords run, so all that needs to be done is get the projectors into the  meeting rooms before the start of the day’s meetings, plug them in and turn them on to verify correct placement on the  projector carts; in the evening, just unplug them (you can leave the power cords in the rooms) and bring them back to the storage room for safe keeping. 

• At the beginning of each day, remove the prior day’s schedule so the current day’s schedule is on top on the sign in front of each meeting room; verify each room’s schedule against the printed schedule/Guidebook — need one person for Monday through Wednesday

• Daily meeting room review (water stations replenished, chairs placed properly, tables wiped down, dirty dishes/glasses removed at breaks, etc.); work with the hotel to make sure these things are in order at the beginning of every day and throughout the day, as needed — need one point person for Monday through Wednesday

• Help with registration during peak times (Sunday PM and Monday AM)— need 2 people

• Be available throughout the meeting to answer technical questions about the Committee, i.e. how to become a CM, how to become an official member of a WG/TF, etc. — Steve Antosz and Don Platts (Jacksonville)

• TASK FORCE:  I would like to see a task force formed to help with finding technical tour and other activity opportunities in the cities in which we choose to have our meetings. Even with hosted meetings, this group can work with the host to locate other venues that may be appropriate and 

add value to our meetings (starting with Jacksonville).

5/15/2018

6

As you’re leaving…

DROP YOUR PLASTIC 

NAME BADGE HOLDER

AND CLIP IN BOXES

AROUND HOTEL

Thank you and travel home safely!

Page 1 of 10

ANNEX A Bushings Subcommittee March 28, 2018 Pittsburgh, Pennsylvania, USA

Chair: Peter Zhao Secretary: Eric Weatherbee

A.1 Opening of the Meeting A.1.1 Introductions

The Chair opened the meeting but declared we would forgo group introductions to allow more time for discussions.

A.1.2 Attendance Membership count was taken with the following results: 46 of 62 members were present with 94 guests for a total of 139 attendees. There were 8 new membership requests. There was a quorum.

A.1.3 New Members Four new members were introduced to the SC and added to the roster. The new members were Mr. John Foschia, Mr. Deepak Kumaria, Mr. Nigel Macdonald, and Mr. Olivier Uhlmann.

A.1.4 Meeting Minutes Approval The Chair asked for a motion to approve the F17 minutes which are hosted on the IEEE Transformer website. Mr. Marek Kornowski made a motion to approve which was seconded by Mr. Dave Geibel and passed with no objections.

A.1.5 Chairman’s Remarks The Chair presented the Standards Status Report for bushings, see Appendix A.

A.2 Working Group and Taskforce reports

A.2.1 PC57.19.00-2004 – Peter Zhao, Chair; Eric Weatherbee, Secretary Mr. Zhao informed the SC that the PAR was submitted and granted. The WG focused on review of the comments submitted by each review group. Due to time constraints not all comments have been reviewed and will continue at the next WG meeting including Section #3 – Definitions, which are still pending but will be ready for discussion at the next meeting. See complete WG minutes in Appendix B of this report.

A.2.2 C57.19.100-2012 – Tommy Spitzer, Chair; Jeff Benach, Secretary The third meeting was held which was the first had a quorum. A motion was made and approved to submit a PAR to start the official revision process. See complete WG minutes in Appendix C of this report.

A.2.3 WG PC57.19.01-2000 – Dr. Shibao Zhang, Chair; David Wallach, Secretary Dr. Zhang informed the SC that there was no WG meeting held as the work has been completed. RevCom approved the draft in December of 2017 and the document is in the process of being published.

A.2.4 WG PC57.19.02 Distribution Transformer Bushings – Steven Shull, Chair; Ed Smith, Vice Chair See complete minutes in Appendix D of this report.

Annex A

Page 2 of 10

A.2.5 WG PC57.19.04 – Scott Digby, Chair; JD Brafa, Vice Chair; Rich vonGemmingen, Secretary Mr. Scott Digby informed the SC that the WG did not hold a meeting due to the status of the document. The recirculation of the document resulted in 97% approval rate. The document was submitted to RevCom for review at their next meeting (April 2018).

A.2.6 IEC/IEEE 65700.19.03 – Les Recksiedler (IEEE) and John Graham (IEC, retired), Co-Chairs The first dual logo standard was approved June of 2014, as such, no meeting was held.

A.2.7 TF Composite Bushings – Completed Spring 2016 The Chair asked the Definitions Review Group of PC57.19.00 to review the TF’s work to see if any useful information could be used for an update to composite bushings definition within 19.00. Prior to the new PAR for 19.00 the TF had ended without reaching an agreement on a change to the definition in 19.00.

A.2.8 TF Bushing Overload – Matthew Weisensee, Chair; Alwyn VanderWalt, Secretary The TF held its first official meeting and concluded there is need for further discussions. It was decided that a survey would be generated for distribution to the uses, transformer OEMS and bushing OEMS to determine the needs of each stakeholder in the issue. See complete minutes in Appendix E of this report.

A.3 External Liaison Reports A.3.1 IEC Bushing Standards Activity – Bruno Mansuy, IEEE/IEC Liaison

The Chair informed the SC that since Mr. John Graham has retired we have been seeking a new liaison that attends both meetings. If we are unable to fill this open roll it will be removed from future agendas. Following the meeting Mr. Bruno Mansuy volunteered to serve this role.

A.3.2 IEEE 693 – Eric Weatherbee, IEEE Liaison Mr. Eric Weatherbee informed the SC that he received an update from Mr. Eric Fujisaki, Chair of IEEE 693, who stated that the document was submitted to RevCom for review and he is waiting for comments/questions as there were still negative ballots with substantive comments. PAR expires at the end of 2018.

A.3.3 WG PC57.160 Guide for PD Meas. in Bushings and Inst. Trans. – Thang Hochanh, Chair Mr. Thang Hochanh informed the SC that no meeting was held due to the status of the document. The guide is currently in process of going to Ballot and is looking for volunteers for the Ballot Resolution Group. The Chair stated that the Bushing SC would be glad to offer help if they can be of assistance.

A.4 Unfinished Business

A.4.1 Application Guide C57.19.100 as a dual logo Document – IEC inquiry

The Chair informed the SC that as previously decided; IEC was contacted and asked to provide the areas they would like to add or revise if a dual logo document was attempted. So far there has not been any response from IEC. The Chair stated that he will allow them one more meeting time-span to respond, if they fail to respond by then it will be considered a closed topic.

The Chair stated there has been a change in policy in regards to dual logo documents. IEEE can no longer adopt IEC documents. However, IEC can adopt IEEE documents.

A.5 New Business

Annex A

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A.5.1 Dielectric Frequency Response (DFR) Test for Bushings

The Chair informed the SC that as an outside entity asked for the Bushing SC as well as the Dielectrics and Test SC to consider sponsoring the formation of a new document. The Chair asked Ms. Sue McNelly, the Chair of IEEE Transformer Committee, if she could provide some information on the topic to the SC. Ms. McNelly informed the SC that the DFR group is seeking both SC’s sponsorship for their document, however, if we do not agree with the document we can ask for changes. But the DFR group does not have to agree with our opinions in which case we could withdraw the sponsorship. If both SC’s do agree with the document it would under t both the DiTest and Bushing SC’s for future revisions.

Following the conclusion of the SC meeting the following people contacted the Chair to participate in this new TF: Sanket Bolar, Mario Locarno, Deigo Robalino, Wesley Schrom, Charles Sweetser, Eric Weatherbee, Shibao Zhang, Peter Zhao.

A.6 Other

A.6.1 TF Investigation into bushing PD during OEM testing – Dave Geibel

Mr. Dave Geibel stated that he will ask for a TF meeting to be scheduled at the next conference and stated it will be under DiTest.

A.7 Adjournment

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Annex B Dielectric Tests Subcommittee

March 28th, 2018 Pittsburgh Pennsylvania

Dielectric Tests Subcommittee

Chair: Ajith M. Varghese Vice-Chair: Thang Hochanh Secretary: Poorvi Patel

Room : Urban Date : March 28th 2018 Time: 11:00 am to 12:15 pm

Members: 136 Present at time of checking: 90 Present per attendance roster & recorded to AM System: 88

Guests present: 110 Membership requested: 13 Membership accepted: 10

B.1 Chair’s Remarks

The Chair briefly highlighted the requirement that while introducing one need to state their employer/ company and sponsor if the difference from the company. The chair also reminded that IEEE and transformer committees are non-commercial organizations and standards shall focus only on developing performance and functional requirement and not design and construction details.

The Unapproved minutes from the Fall 2017 meeting and the agenda for Spring 2018 meeting was sent out to members and guests before the Spring meeting and it’s also posted on the website.

An area that WG and TF have been late with and we need to improve is to send out the Agenda at least 14 days before the meeting. This also applies to on-line WG and TF meetings.

The Chair clarified the Ballot resolution (BRG) process. Only substantial issues brought up in the ballot need to be discussed with the WG as long WG had authorized setting up of BRG. Additionally, unless explicitly empowered by the working group, the BRG comment resolutions shall be presented to the working group for confirmation and approval.

The Chair reminded all attendees to have updated information, such as email address, in the AM system as for all correspondence this system is used. Regarding the AM system.

Per new guidelines from IEEE, Audio/Video recording or photography is not allowed during SC, WG and TF meetings. The secretary could record the meeting for writing the minutes of meetings but this needs to be notified, and recording must be deleted after the use. Chair informed SC that the subcommittee Secretary would be recording the audio of the SC meeting for this reason today.

While moving motion, members were advised to articulate the motion first and clearly state the motion. It’s recommended that the motion is made in a written form to have clarity and correct documentation.

The Chair reminded the WG and TF leaders to submit their minutes from the meetings within 30 days to the SC chair and secretary. The SC Secretary then has to submit the SC minutes within 45 days of the SC meeting. To minimize revision and errors in the sub-committee level and transformer committee level minutes, please send the final version of your minutes.

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The Chair reminded WGs that call of the patent is required a during every WG meetings including on-line/Teleconference meeting. If there are any patent claim, it shall be noted but not discussed at the working group meetings. Calls for Patents is not required for TF.

There is an increase in Task Forces and Study groups under the Dielectric Test Subcommittee. TF and Study groups are typically created with a specific scope and agenda. It is important that the TF and study group leaders have a clear plan to report back to parent with their recommendation in a reasonable timeframe.

The Chair shared details of upcoming PES sponsored meeting as well as details of next transformer committee. IEEE PES T&D Expo on April 16-19 of 2018 in Denver, CO, USA and the next IEEE PES General meeting – Aug 5-9: Portland, Oregon, USA. The fall committee meeting 2018 will be held in Jacksonville, Florida 14th -18th of October 2018.

The Current Status of PARs was presented by The Chair.

• C57.161 Guide for DFR Measurements is currently under 2nd round of ballot process. The PAR was extended to December 2018.

• WG on C57.127 Guide for the Detection of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers reviewed the significant comments from the ballot, and a smaller ballot resolution group was established to go over the rest of the comments. The validity of current revision of guide is expiring in 2018.

• A new PAR is approved since last SC Meeting for revision of C57.113 Recommend Practice for Partial Discharge Measurement in Liquid-Filled Power Transformers and Shunt Reactors. WG had the first meeting held this week in Pittsburgh. The standard is expiring in 2020 and the Par in 2021.

• C57.160 and C57.138 are in good shape.

• C57.98 Guide for Transformer Impulse Tests expires 2021. Request for PAR for revision of guide is included agenda for this SC meeting as a new item.

The Chair reminded the WG on attendance requirement for membership and for the continuation and the requirement to have attendance updated in AM system, i.e. to attend two out of last three meetings or three out of five last meetings.

The secretary presented the new members and welcomed them to the subcommittee. 20 had requested membership in the last meeting in Louisville, KY and 12 where accepted. 13 members were changed to guest status. The total membership of the Dielectric Subcommittee is today 136 members.

B.2 Quorum, Approval of Minutes and Agenda

The membership list was presented, and a show of hands of committee members present showed that a quorum of members was in attendance at the start of the meeting. 90 out of 136 members were present, so there was a quorum.

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All attendance is recorded in AM System. Per verification of roster 88 members and 110 guests attended the SC in Pittsburgh PA.

Motion to approve the agenda was made by Dan Sauer and seconded by Kent Miller. The chair presented the agenda, and it was unanimously approved.

The Motion to approve the Fall 2017 minutes was made by Marcos Ferreira and seconded by Dan Sauer. The minutes of the Fall 2017 meeting at Louisville meeting was approved unanimously.

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B.3 Taskforce and Working Group Reports Pittsburgh, March 28th 9.30 am, TF on External Dielectric Clearances, Eric Davis, Chair; Troy Tanaka, Secretary

The Task Force on External Dielectric Clearances met on Monday March 28, 2018 at 9:30 AM in the Omni William Penn Pittsburgh. There were 50 people in attendance; 9 of 18 members, and 41 guests. Several guests requested membership but will not be granted membership because the task force activities are coming to an end. A quorum was not achieved. The full attendance record is available in the AM System. The chair, led a discussion around a comment made around a previous 2016 Survey that normative notes should be below the table and informative notes can be part of the table. The notes were reviewed during the meeting and all present agree that: • Note 1 should normative and be the first note below the table. • Notes 2 and 3 should be renumbered as Notes 1 and 2 respectively. • Notes a, b and c should remain normative. Dan Sauer and David Wallace agreed to verify the phase-ground and phase-phase calculations immediately following the meeting. Since no quorum was achieved at the meeting, the chairmen, sent out a formal request via email on 3/26 requesting approval, disapproval, or abstention prior to April 4th of the following information. 1. Approval of the Louisville Meeting Minutes as written. 2. Approval of the following motion: Make Note 1 normative, putting it below the table, and renumber the remaining notes. Because of formal email, the chair received eleven (11) approval votes, zero (0) no nays, and the chair not voting. Unfortunately, even with several reminder emails, there were a few no responses. In addition, Fred Elliot asked to be taken off the roles as he is no longer participating in the Transformer Committee Activities. The membership roster will also be adjusted in accordance with the rules of the P&P manual prior to the next meeting in Jacksonville.

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B.3.4 TF on Revision of Impulse Tests

Pierre Riffon, Chair; Daniel Sauer, Vice-Chair The TF met on March 27, 2018, from 4:45 pm to 6:00 pm. Twenty-five (25) members and forty-three (43) guests attended the meeting. Three (3) guests requested membership. The meeting was chaired by Pierre Riffon, Chair of the TF. Mr. Daniel Sauer was the vice-chair. Attendance has been recorded in the AM system. Required quorum was met, presence of at least 22 members was required. The TF membership and guest roster has been reviewed after the Louisville meeting and members who did not attend the last three meetings were moved as guests. The agenda has been approved unanimously. The motion was made by Mr. A. Varghese and was seconded by Mr. A. Bolliger The Louisville meeting minutes were approved as written by all members present. The motion was made by Mr. D. Wallace and was seconded by Mr. S. Som. The first item of business was related to the proposal of modifications to clause 10.3.2.1 of C57.12.90 concerning the condition of tertiary and stabilizing windings during lightning impulse tests. This proposal was sent within the TF membership and guests. The proposal gets a 97.4% approval rate and only one negative. The negative was rejected since this was not the essence of the proposal. Several editorial comments were received. A revised proposal will be surveyed once more within the TF. The text related to not perform any impulse test series on stabilizing winding terminals will be moved to an appropriate location within the lightning impulse test section of IEEE C57.12.90. This modification will also be part of the upcoming survey. The second item of business was related to the proposal of modifications to clause 10.2.4 of C57.12.90 concerning the tap changer position during switching impulse tests. This proposal was sent within the TF membership and guests. The proposal gets a 78.6% approval rate but with 9 negatives. In order to get a better consensus, the Chair presented a revised proposal which may get a larger consensus. The induced switching impulse level on the other winding(s) shall be such that their rated switching impulse levels(s) is (are) obtained. For windings not having a rated switching impulse level, the induced voltage shall be such that 83% of the BIL is obtained on the LV winding(s). This revised proposal will also be surveyed within the TF membership and guests prior to the next meeting. Under New Business, Sanjib Som asks to add voltage transfer measurement during lightning impulse tests. This subject will be added to the next meeting agenda. The meeting adjourned at 5:30 pm on March 27, 2018. The adjournment motion was made by Mr. T. Ansari and was seconded by Mr. F. Leal. The next meeting is planned to be held in Jacksonville, Florida, on October 16, 2018. Pierre Riffon P. Eng. TF Chair March 27, 2018

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B.3.5 TF on Revision of Low Frequency Tests Pittsburgh, PA – March 27, 2018, 1:45 p.m., Chair: Bill Griesacker, Vice Chair: Daniel Blaydon, Secretary: Myron Bell There were 107 attendees, 41 of 62 members and 66 guests were present at the meeting; 9 guests requested membership, 6 were granted, 9 members were moved to guest status. More than 50 % of the working group members were in attendance at the meeting, therefore a quorum was present. 1. The meeting was called to order at 1:45 PM. 2. Attending members were counted and quorum was verified. 3. There were no objections to unanimous approval of the agenda. 4. There were no objections to unanimous approval of the meeting minutes from the 2017 Fall

meeting in Louisville. 5. Old business

a. Tap changer position during induced test (survey results). Bertrand Poulin summarized the results of the 4th survey, indicating a 98.9% approval rate. The majority of the new text will be moved to the annex of C57.12.90 until the Low Frequency Dielectric Test Guide is published, at which point, the material will then be moved to the guide.

b. Applying pressure inside a transformer tank during induced test (survey results) Steve Antosz is still working on this, with Bertrand Poulin conducting the surveys. One last survey will be sent to try and achieve closer to 100% approval.

c. Alternative Applied test method for HV Delta windings. This topic will be moved to the responsibility of the LF Dielectric Test Guide TF, under Dan Sauer.

d. Clarification of measuring voltage during low frequency dielectric tests Bertrand gave a brief description of the 3 different types of voltmeters, and how they display/interpret voltage. Survey results for the topic were reviewed and comments discussed. Bertrand also displayed a proposed addition to paragraph 10.5 of C57.12.90 that would recommend the use of “Crest Responding Voltmeters”, with additional information incorporated into the Low Frequency Dielectric Test Guide. Another survey will be sent out and the results reviewed at the next meeting.

e. Gassing issue for certain types of transformers with wound cores: proposal for new design test Phil Hopkinson provided background information concerning gassing issues for wound core transformers, as a result of poor core ground location. Phil displayed his proposed wording, he would like inserted into C57.12.00 and C57.12.90, requiring a new design test with PD measurement of these types of class I transformers. Input needs to be obtained from those with distribution transformer experience based on feedback from Dan Sauer of Eaton.

6. TF PD Factory Limits report by Vinay Mehrotra

TF debated the scope and little consensus was achieved. Bertrand Poulin has offered to help come up with a different way to present the topic so we can move on this topic. Changes to the scope must be approved by the main Task Force for Revisions to Low Frequency Dielectric Tests.

7. Study Group – PD in bushings during factory testing – Dave Geibel Dave Geibel has agreed to lead the study group on bushing PD during factory testing. A time slot will be requested for the next meeting.

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8. New business

A motion was made by Don Ayers to form a task force to revise the test procedure, test levels, and acceptance limits for partial discharge testing of Class I transformers. A 2nd for the motion came from Mickel Saad The meeting time expired and the motion discussion was tabled until the next meeting in Jacksonville.

The meeting adjourned at 3:00 p.m.

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B.3.6 WG - IEEE Guide for the Detection of and Location of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers and Reactors (C57.127) Chair: Detlev Gross Chairs Vice Chair: Jack Harley Secretary: David Larochelle Pittsburgh, March 27th, 2018, Room: Monongahela Meeting Attendance The working group met at 11:00 AM. 55 persons were in the room and 26 members out of 30 were present. Quorum requirement was met. Complete attendance record is available in the AM System. Discussions The meeting started with the approval of the agenda (Hemchandra Shertukde, seconded by Gregorio Lobo) with 21 members in favor, 1 opposed. The minutes from Louisville meeting were also approved (motion by Hemchandra Shertukde, seconded by Thang Hochanh) with 18 members in favor, 0 opposed. No new items were raised during the call for patent. The meeting started with statistics on the ballot group. We had an 81% return rate from the 128 members of the ballot group. 95% of the members approved the guide, with 7 negatives and 10 abstentions. A request was made from Raja Kuppuswamy to add a section on the evaluation of precision on the result of localization. The motion was made (Gregorio Lobo, seconded by Arturo Nunez). It was rejected with 19 votes. From all the comments received from ballot, the chair presented all comments that were identified by ballot members as being “Disapproved”, “technical” and “Must be satisfied”. From all comments reviewed, discussions were made on the following items: - VHF definition states that Corona produces EMI up to 300 MHz. Raja Kuppuswamy mentioned the possibility for corona to create EMI above 300MHz. The group agreed to change the definition to “…emit mostly up to…” - Coupling capacitor as a sensor for electrical PD: The sentence “There is generally no limitation put on the frequency limitation range” was removed. - Power Factor Tip up: Raja Kuppuswamy discussed the reasons for power factor to change, before or after the inception of PD. The goal being of simply mentioning the fact that there could be an impact of PD on power factor, no details is needed, and it was accepted to leave the item as it is. - A comment was received asking to move the historical background of acoustic inspections to an annex. The group decided to leave the information where it is.

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- Permanent vs Short-term monitoring: A reviewer asked that the difference be better defined. Alexander Kraetge and Ali Naderian volunteered to provide a paragraph. - Figure 15 showing suggested initial placement of sensors was considered misleading and not being the optimal initial placement. The description of the figure will be modified to state it is an example of placement. - Energy criterion: Since not mandatory to understand the acoustic localisation technique, it was preferred to remove the section from the guide. A motion from Alexander Kraetge, seconded by Gregorio Lobo was made and voted unanimously (23 in favor, 0 opposed). - A comment was received to change “partial discharge” to “electrical discharge” throughout the guide. This comment was withdrawn by its author during the meeting. A motion was made by Waldemar Ziomek, seconded by Arturo Nunez to approve all modifications discussed by the group that did not get an individual vote. The motion passed with 19 members in favor, 0 opposed. The chair suggested to form a ballot resolution group that will go through the editorial comments from the ballot and make the necessary corrections. The following individuals volunteered: - Hemchandra Shertukde - Jeff Benach - Ali Naderian - Marco Tozzi - James Cross - Detlev Gross - Jack Harley - David Larochelle A motion to authorize the ballot resolution group to make necessary corrections to the guide and to send back the new revision to the ballot system was made (Hemchandra Shertukde, seconded by Arturo Nunez. It was unanimously approved (0 abstained). The following participants requested membership and will become members for the next meeting. James Cross, Anthony Franchitti, Akash Joshi, Baitun Yang The group will meet again in Jacksonville for the fall 2018 meeting. Adjournment The meeting was adjourned at 12:20 AM. David Larochelle

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B 3.7 Working Group for PD in bushings, PTs and CTs – PC57.160 WG Secretary: Thomas Sizemore; WG Chair: Thang Hochanh Meeting Minutes October 30, 2017 at 4:45 – Louisville, KY This working group did not meet in Pittsburgh. The guide is currently in Ballot process.

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B 3.8 Task Force Winding Insulation Power Factor & Winding Insulation Resistance Limits Diego Robalino (Chair) and Greg Lobo (Secretary) at the meeting

Tuesday 27/3/2018, Allegheny (17) Room in Omni William Penn Hotel, Pittsburgh, PA. Today’s meeting was held for equipment manufacturers. The general meeting was cancelled; therefore, attendance was not recorded. Objective is to state correctly on what is needed in the industry to avoid confusion and/or misinterpretation of section 10.10.2 in IEEE C57.12.90 – 2015. 10.10.2 instrumentation +-0.25% insulation power factor for accuracy of measurement is listed in the IEEE C57.12.90 - 2015 and therefore this task force was form due to the fact that the technology in the industry are assumed to be doing better than +-0.25%. Subcommittee brought up two scopes:

1) The accuracy of instruments in the industry 2) Provide recommended limits PF

The accuracy and reasonable limits were discussed from several representatives of prestigious equipment manufacturers. Manufacturer 1: 0.5+- 0.02% for PF and less than 0.2% pf of reading for capacitance (absolute values). “This are guaranteed values and not typical values. Typical values are much better.” Manufacturer 2: 0.5+-0.02% for PF and less than 0.5% pf +- 1pF of reading for capacitance (absolute values) Manufacturer 3: 0.5% for PF and 0.3% pf of reading for capacitance Manufacturer 4: 0.01% +- 0.005% for PF and 0.01PF for capacitance. (An email will be sent to the chair to validate these values) John Herron brought up whether to list resolution specification. Discussion was brought up to whether to dispose published information. Since it is public information than there is no problem unless manufacturer does not want to disclose information. The statement of accuracy of “measurement” and not “equipment” from section 10.10.2 was discussed briefly to point out what reasonable limits of PF should be. There were suggestions of 1% and 5% of reading were for reasonable limits of accuracy. Mark Perkins original proposal was 1% of reading. Peter Werelius suggested 5% of reading +- 0.05% absolute. Charles Sweetser proposes to rephrase the statement to percentage of reading with absolute values of accuracy. The idea is supported by others. Preliminary values gathered during this meeting WILL BE REVIEWED by equipment manufacturers and formally presented during our next meeting. Capacitance limits were also discussed and suggestion was made to have less than <0.5% of reading +- 1pF. John Herron pointed out that capacitance is not stated in the standard paragraph 10.10.2 in IEEE C57.12.90 - 2015. Therefore, there was a discussion whether to provide the capacitance limits or not. After several discussions, the proposed revision for Section 10.10.2, C57.12.90 – 2015 “The accuracy of instrumentation should be 5% of the reading ± 5x10E-4 (absolute) of insulation power factor, and the measurement should be made at or near a frequency of 60 Hz” The meeting was adjourned at 9:17am.

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B.3.7 WG C57.113 - Recommended Practice for PD Testing, March 27th, 2018 – 3:15pm Ali Naderian – Chair, Janusz Szczechowski – Vice Chair John Foschia – Secretary

• 54 attendees, first meeting so those whom request membership was granted.

o 17 members requested membership (+ those whom did not note the request as the rosters were not present)

• Introductions carried out

• Asked about essential patent claims – No essential patent claims were noted.

• Motion for approval of agenda o Alexander Kraetge 1st, Detlev Gross 2nd o Unanimous approval of the agenda as posted

• PAR approved in December 2017, expires 2021. The recommended practice

• Reviewed prior members who worked on this guide and the table of contents

• Detlev Gross

o The structure of the document is appropriate and adequate, could add additional pattern recognition in the annex portion of the document.

o No major changes necessary

• Bertrand Poulin o Most of the prior work was based on IEC 270 o A lot of the work was performed by Dr. Lemke o Should be synchronized with IEC o No major changes necessary

• Ali mentioned that the group’s work should be related to dry type guide

• Hem Shertude – is the guide applicable to class 1 and class 2 transformers?

o Bertrand Poulin – this is for electrical detection of partial discharge, not an explanation of induced potential testing.

• IEC 60270 – 2015 revision – raised upper frequency limit of bandwidth, o Detlev Gross– the group should talk about the frequency limits in this IEEE guides. o Only 10% of an IEC std/guide can be revised/modified when in “maintenance”

• Detlev Gross - accuracy requirements in IEC are not reasonable, and further discussion about

wideband and narrowband was held.

• The following items are relevant for discussion:

o 1MHz bandwidth, Cross coupling, UHF, calibration of calibrator, SAT

• Calibration of calibrators:

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o Detlev Gross – only 2 companies in Germany and unsure of US that performs calibration of the calibrators.

o Ali – we could put guidance of this in here. (revise annex C)

• Raja Kuppuswamy o Standards have a 10 year life o The group should look at the bandwidths and increasing the bandwidth (“take a fresh

look”) o UHF:

Many manufacturers do not use UHF Should include guidance on how to use UHF as it is a new trend Ali agrees that it should be an additional accuracy Detlev Gross – uncertainty in UHF is worse than lower frequency. He is strictly

opposed to having acceptance criteria for UHF. Bertrand Poulin – UHF used for identifying if there is partial discharge or not. It

is not necessarily used for quantification. Raja K. – some OEMs are installing (dielectric windows)? on transformers for

future UHF installation.

• Ali – purpose of the group is not to start from scratch (scientific research) o CIGRE work in progress

Detlev Gross – cross coupling matrix during calibration is important to measure Bertrand Poulin – cross coupling should not be in this guide as it is not in the scope of C57.113 Detlev Gross – this information could be in the test guide for LF tests, Ajith agreed. Bertrand Poulin – UHF does not belong in due to scope; the WT cannot change scope without changing PAR. Ajith – It is important to provide information to the chair as soon as possible and to provide a presentation of potential revisions to the chair Alexander Kraetge – this is a recommended practice (not a guide) and we should recommend a best practice, including cross-coupling Ajith – C57.113 expires in 2020. Detlev Gross volunteered to provide presentation of IEC related material for the next meeting. Detlev Gross – IEC 60270 does not have a guide; they are entertaining a CIGRE group to have a horizontal guide. Alexander Kraetge – CIGRE work has already been performed (100+ pages on transformers) Ali – UHF is no longer a topic, not in the scope. Will investigate going into the new low frequency test guide Ali – we could add language or a separate annex regarding SAT

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Detlev Gross – do not reword the title of Annex F because the noise identification is important. Detlev Gross - Dr. Lemke is no longer working (he is ~80 years old) Original noise identification images are from Lemke Detlev Gross can provide new images of noise patterns

• Request for task leads: o Chapter 4: Detlev Gross o Chapter 5: Detlev Gross o Annex A: Alexander Kraetge o Annex B: o Annex C: o Annex E: o Annex F/SAT: Janusz Szczechooski (Vice Chair) o Annex G: Detlev Gross for images o Annex H:

Ali will have 1-2 conference calls prior to the next meeting

• No new business brought up

• Meeting adjourned: Hem Shertudke 1st, Dtlev Gross 2nd.

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B 3.8 Task Force Developing Low-Frequency Test Guide

Dan Sauer (Chair) at the meeting Tuesday 27/3/2018, Pittsburgh, PA.

The Chair called the meeting to order at 9:30 am. The Chair showed the agenda below:

1. Chair’s welcome 2. Introduction of Participants 3. Approval of agenda 4. Review of Task Force Scope 5. Procedure Review 6. The title, Scope, Purpose Discussion 7. Request for Guide Material 8. New Business 9. Adjournment

The Chair asked participants to introduce themselves. Since this was the first meeting for this TF, quorum was achieved. Total number of attendees: 76 (not including Chair and Secretary) Participant requested and granted membership: 51 Corresponding member: 1 Phil Hokinson wanted to add core gassing to the agenda. The Chair explained that core gassing is not part of this TF scope. Eric Weatherbee made a motion to approve agenda for spring 2018. Greg Lobo seconded the motion. The motion carried unanimously. The Chair showed the proposed scope from the Fall 2017 Dielectric Test sub-committee minutes:

“Form a TF to develop a PAR for creating a new guide on Low-Frequency Dielectric Testing

Historically we have developed good summaries of tests that are actually guide material The Chair then mentioned the procedural review as shown below: This Task Force is charged with creating a title, scope, and purpose for the proposed new guide which is necessary prior to any PAR being approved. Further, once the foregoing is known, it will need to be approved by the Dielectric Test SC and AdCom. The proposed title text is shown below: IEEE Guide for Low Frequency Dielectric Testing for Liquid-Immersed Distribution, Power and Regulating Transformers. Motion was made to approve the proposed title above and seconded by Vinay Mehrotra. During the discussion Phil Hopkinson suggested to remove the liquid immersed wording to include both dry and liquid immersed type transformers. Ajith Varghese mentioned that this TF is created to accommodate C57.12.90. Phil Hopkinson made an amendment to the motion to remove ‘liquid immersed’ from the tile. The amendment motion was seconded by Tauhid Ansari. The motion carried unanimously. After floor discussions, the new proposed title: IEEE Guide for Low Frequency Dielectric Testing for Distribution, Power and Regulating Transformers. The Chair moved on to the scope discussion. The original proposed scope text is shown below:

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This guide provides background information on the tests specified in IEEE Std C57.12.00 and on the test methods specified in IEEE Std C57.12.90 and other standards applicable to liquid-immersed distribution, power and regulating transformers. It is intended to assist in the proper testing of such transformers. After discussions amongst participants, the scope was changed to the following: This guide provides additional information on low frequency dielectric tests applicable to distribution, power and regulating transformers. Phil Hopkinson made a motion to approve the new proposed scope text above. The motion was seconded by Dave Walker. The motion was carried unanimously. The Chair then displayed the proposed purpose below: The purpose of this guide is to provide test and procedure background information for the tests specified in IEEE Std C57.12.00 and C57.12.90 and other standards applicable to liquid-immersed distribution, power, and regulating transformers. A motion was made by Pellev Gross to remove the purpose and was seconded by Brian Penny. The motion did not carry. Then the Chair changed the purpose text based on feedback from participants as shown below: The purpose of this guide is to provide background information on conducting and interpreting the results of low frequency dielectric tests. A motion was made by Phil Hopkinson and seconded by Hem Shertukde to approve the above purpose text. The motion carried unanimously. The Chair requested that participants send him any information they would like to see in this guide. There was no new business proposed. Hem Shertukde made a motion to adjourn the meeting and was seconded by Vinay Mehrotra. The motion carried. The meeting was adjourned at 10:40am. Respectfully submitted by Hamid Abdelkamel.

Dan Sauer (TF leader) motioned to proceed to a PAR on a new document with title, scope and purpose as defined by the Task Force. Second Vinay Mehrotra Motion was unanimously approved.

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B.4 Liaison Reports IEEE High-Voltage Testing Techniques Subcommittee

Liaison Report to Dielectric Tests Subcommittee of IEEE Transformers Committee Submitted by Jeff Britton (HVTT Subcommittee Chair)

March 27th, 2018 Pittsburgh, PA

The High-Voltage Testing Techniques (HVTT) Subcommittee of the IEEE Power System Instrumentation and Measurements Committee met in Jacksonville, Florida on January 10th, 2018, in conjunction with 2018 IEEE PES Joint Technical Committee Meeting. There was a total of:

17 Onsite Attendees – Comprised of 6 Members and 11 Guests 13 Web Meeting Attendees – Comprised of 7 Members and 6 Guests

HVTT Subcommittee Membership was 24 persons at the time of the meeting, including 10 individuals who were announced as new members of the Subcommittee. Quorum was achieved.

Working Group Updates: HVTT presently has 2 active working groups, 1 Active Task Force, 1 New Task Force that will have its first meeting in the Fall of 2018, and 1 Entity Ballot Sponsorship Project active with IEEE SA.

WG P1122 “IEEE Standard for the Digital Recorders for Measurements in High-Voltage and High-Current Impulse Tests” Chaired by Jeff Britton (Phenix Technologies), with Secretary Tom Melle (Highvolt).

This WG met on January 10th, 2018 and continued to review and discuss the performance requirements for digital recorders as stated in IEEE 1122-1998, and to harmonize these technical requirements as much as possible with the present draft for the revision of IEC Standard 61083-1, which remains in the CDV stage.

The majority of the meeting was spent discussing the decision of the IEC Maintenance Team for the revision of IEC 61083-1 during their November 2017 meeting in Toronto, to reduce the overall allowed amplitude uncertainty for impulse digitizers from 2% to 1% as they move from the CDV to the FDIS version of the IEC revision. Such a significant technical change is highly unusual at this stage in the IEC revision process. It is the position of the IEEE WG for 1122 that this change, if adopted, will have unforeseen implications that will necessitate further revisions throughout the IEEE and IEC standards. Limits on the minimum allowed resolution (bit count), as well as a number of other limits on individual contributions to the overall uncertainty will be impacted. Additionally, the uncertainty limits on reference pulse calibrators will need reviewed and probably reduced.

The IEEE WG did agree to lower the minimum resolution requirement to 0.5%, which will effectively mean that 8-bit digitizers will no longer meet the requirements of IEEE 1122. It is expected that that the other uncertainty requirements will not change significantly in the next IEEE revision.

WG P510 “Guide for Electrical Safety in High-Voltage Testing” Chaired by Jeff Hildreth (Bonneville Power Administration), with Vice-Chair David Wallace (Mississippi State University)

The secretary of this working group was forced to resign due to change of employers, so this WG is presently seeking a new secretary.

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This WG met on January 9th, 2018. A detailed table of contents has been developed and accepted by the WG for the new safety guide, and authors have been selected to lead the writing tasks for the various clauses and annexes.

This next working group meeting is scheduled to take place in Portland, Oregon, at the time of the IEEE PES 2018 General Meeting. Initial drafts are due prior to this meeting.

TF to develop a Scope and Purpose statement for a general IEEE PD Guide Chaired by Nigel McQuin of McQuin Power Consulting

This TF met on January 9th, 2018, and worked on the development of suitable Title, Scope and Purpose Statements. It was agreed that the main body of the guide will focus on PD measurements performed using the using the Wide Band Apparent Charge Method, as defined in IEC 60270.

Specific topics to be addressed, and therefore mentioned in the proposed Purpose Statement include: • information on basic discharge physics and material related defect discharge

mechanisms, • generic phase resolved partial discharge patterns commonly associated with various

defect types, • discussion regarding the internal propagation of high frequency signals resulting from

partial discharges occurring in power engineering equipment, and • best practices for achieving good measurement results

It is expected that information on other measurement techniques such as acoustic emissions, UHF measurements, and UV light emissions (for example) may be included in informative annexes if authors are willing to contribute.

Pending an email survey of the TF membership for approval of the agreed title, scope and purpose statements, the HVTT Subcommittee will submit a PAR to develop the guide. Detlev Gross of Power Diagnostix has graciously agreed to chair the WG.

TF to develop the Title, Scope and Purpose for an Application Guide for IEEE Standard 4 Chaired by Bill Larzelere (past chair of the HVTT Subcommittee)

There has been interest expressed in developing an application guide to help users of Standard 4 with understanding and implementing some of the new requirements introduced in the 2013 revision, such as:

• Use of the “Test Voltage Factor Method” of “K-factor” method for determining the impulse parameters for lightning impulses having oscillations near the peak

• How to correctly perform uncertainty calculations for high voltage measuring systems in accordance with internationally accepted methods

• How to create and maintain a proper record of performance for a high voltage measuring system

The first task force meeting for the application guide is planned to take place in the fall of 2018. WG P2426 “Guide for Field Measurement of Fast‐Front and Very Fast‐Front Overvoltages in Electric Power System” Entity Ballot PAR, Chaired by Dr. Shijun Xie of State Grid Corporation, China

The first WG meeting took place on November 13-14 in Chengdu, China. PSIM Committee Chairman Jim McBride participated in this meeting by conference call.

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For the 2018 JTCM, Dr. Xie travelled to the US and presented a WG progress report in the PSIM Main Committee meeting. The Chinese WG presently consists of 22 members, coming from various Chinese utilities, and universities.

The WG has prepared an outline for the guide they are developing in the IEEE Standards Template format, and they have assigned writing tasks to various members.

The next meeting will be held at Qingdao or Xi’an, China, in next April.

The third meeting will be held in Portland, Oregon in August 2018, together with the IEEE PES 2018 General Meeting.

The next round of HVTT Subcommittee meetings are scheduled to take place in October of 2018, tentatively in conjunction with the IEEE Insulated Conductors Committee meeting, in Orlando Florida.

Anyone interested in participating in the work of HVTT should contact Jeff Britton or Jim McBride.

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B.5 Discussions

B.6 Old/ Unfinished Business

1. PD Testing Requirement for Class I transformer.

As a follow up of the motion passed during F17 DTSC meeting, This item was added to agenda of TF on the Continuous revision of Low-Frequency Test ( RLFT) and initial discussion occurred during S18 RLFT Meeting. DTSC will wait for the recommendation of RLFT.

2. Core gassing and PD Testing on Wound Core Transformer

This issue has been presented in various TF/WG/SC including DTSC during S-15. There was a survey was conducted. Phil Hopkins presented the results of the survey.

o C57.12.00 for 2015 has the dielectric test requirements in table 17 and not in table 18, so changed the reference to table 17.

o C57.12.90 clearly states that section 10.8 is for Class II transformers but wound cores are only in Class I and Distribution Transformers, so I created a new section 10.7.7.

o Core gassing only comes from transformers with Low-High winding construction so added the words.

o One manufacturer has reported proposed 100pC limits are not achievable. Waiting for a recommendation from the manufacturer

o Several people have commented that partial discharge from Dead Front Bushings is a constant concern and limits need to be considerate of it.

During the discussion, many members sought clarity on whether the issue is specific to one manufacturer’s design and whether all distribution transformer manufacturers understand the implication of new addition to testing requirements.

As it stands, prior Survey had 87.3% approval. However, there are questions on the 100pC limit, and Phil is waiting for feedback from manufacturers. No motion made during DTSC regarding next steps on this subject.

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B.7 New Business 1. C57.98 Guide for Transformer Impulse Test is expiring in 2021. Motion to Initiate PAR for

revision of guide with scope and purpose in line with existing guide and start a WG was made by Eric Davis and seconded by Dan Sauer.

During discussion-Pierre Riffon questioned if a revision is needed. Thang mentioned in the current version of the guide, the K-factor is missing, and there are issues related to K Factor that should be addressed and included. The motion was passed with no oppose, and ten abstained. 2. Entity PAR Request for DFR guide for Bushings Sue McNelly gave an update on the request for approval of entity PAR from China for DFR on bushings. Due to overlap with Multiple Transformer subcommittees and concern with limited experience within Transformer committee in handing entity WG, the request will be handled by Transformer administrative SC. Being entity PAR, only corporate who pay the corporate entity fees can be the voting members of WG but having Transformer Adcom sponsor will give transformer committee the final say in work being produced by the WG in approving the document going to the ballot. Transformer Adcom is discussing setting up Taskforce of the Subject expert group to Liaison with the entity WG and transformer committee. At this time no final decision is made. 3. Entity PAR Request for Standard for Lead Exits Sue McNelly also gave an update on a 2nd entity PAR request for a standard for the Lead exit of 750 KV and 1000 KV transformer. The scope of this PAR is very unclear, and more clarity is needed. No decision was made concerning PAR approval and will be discussed further by transformer Adcom.

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4. Instrument transformer standard – Impulse waveform requirement It was brought up to the subcommittee that there is possibly an error in C57.13 related to waveforms to be superimposed/compared.

Due to lack of time, this item was not discussed but will be at the next meeting.

B.8 Adjournment

Meeting adjourned 12.20 PM. Motion to adjourn made by Diego Robalino and Bill Griesacker

Minutes respectfully submitted by: Poorvi Patel Secretary DTSC.

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Annex C Distribution Subcommittee – Chair: Stephen Shull

March 28, 2018 Pittsburgh, PA, USA

Chair: Stephen Shull Vice-Chair: Jerry Murphy Secretary: Josh Verdell

C.1 General Opening

Steve opened the meeting welcoming everyone to the meeting. Jerry circulated the rosters. To establish a quorum, a list of members was displayed and a count of was made. We did have a quorum with 32 of the 55 members in attendance by count of those identified on a slide presented in the meeting. Recorded attendance gave 124 in attendance, 38 members and 22 requesting membership.

The agenda was reviewed, motion made by Dan Sauer, seconded by Marty Rave and approved by unanimous acclamation of the members in attendance.

The Spring 2017 meeting minutes were reviewed, and a motion was made by Dan Sauer, seconded by Marty Rave and approved by unanimous acclamation of the members in attendance.

C.2 Working Group and Task Force Reports

C57.15/IEC 60076-21 – Step-Voltage Regulators – Craig Colopy

Craig presented the following minutes from the working group meeting on March 26, 2018 at 4:45 p.m. with 40 people in attendance.

1 Craig Colopy opened the meeting and introductions were made by the attendees.

2. Distribution of attendance sheets. Essential Patent call made by Craig Colopy - None received from attendees. Check for Quorum was made, 25 from a visual count Members in attendance.

3. Approval of agenda - Steve Shull made Motion, Dan Sauer seconded, no opposition to approval.

4. Approval of minutes from Fall meeting in Louisville, Kentucky, USA - Motion for approval by Wally Binder and second by Dan Sauer, no opposition to approval.

5. IEC editorial review received by chairman on Draft 3.0 (CDV). IEEE-SA board has approved Draft 3.2 and was released to IEEE editorial staff. Chairman’s review of IEC editorial review of Draft 3.0 and document changes between Draft 3.0 and 3.2 were submitted to the Secretary of IEC for review. During the CDV of Draft 3.0, comments and suggested changes from member countries were made. Chairmen reviewed these comments and suggested changes with the WG. WG responses are documented and will be sent along with an updated Draft to the IEC TC 14 Secretary for review. The Secretary will then submit a revised draft for the FDIS stage to the IEC. This will then be sent for translation, and then edited before the FDIS circulation.

6. Future meetings

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2018 Fall Oct 14 – 18, 2018 Jacksonville, FL

7. Move for Adjournment - Fred made Motion, Steve Shull seconded, no opposition to approval. Close of meeting

Submitted by: Gael R Kennedy and Craig Colopy

C57.12.20 – Overhead Distribution Transformers – Al Traut

Al presented the following minutes from the working group meeting on March 26, 2017 at 11:00 a.m. with 77 in attendance.

The meeting was called to order at 11:02am on 03/26/2018 immediately followed by introductions.

The patent policy was reviewed per guidelines from the ADCOM Meeting:

“If any individual believes that Patent Claims might be Essential Patent Claims, that fact should be made known to the entire working group and will be duly recorded in the minutes of the working group meeting. This request shall occur at every standards-developing meeting once the PAR is approved by the IEEE-SA Standards Board.”

NONE WERE BROUGHT FORWARD

The Chair then move to the rosters and membership

Three new members added since last meeting

Israel Barrientos

Eric Theisen

Lee Welch

Based on the WG members listed on the rousted and projected at the meeting a quorum was declared after a showing of hands (33 members present).

Four attendees requested membership during the S18, Pittsburgh, PA meeting

The Chair asked if any member objected to the proposed agenda as displayed to the Working Group. No objections were brought forward so the agenda was approved as submitted. A copy is listed below for record purposes.

IEEE Transformers Committee

WG Overhead Distribution Transformers C57.12.20

Meeting Location/Time: Omni William Penn Hotel

Pittsburgh, PA

Monday March 26, 2018, 11:00am – 12:15pm

Meeting Agenda:

1. Welcome, Introductions & Rosters

2. Call for Patents

3. Membership & Quorum

4. Approval of Agenda

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5. Approval of Previous Minutes

6. Chair Report

7. Old Business

a. Review topics for next draft

8. New Business

a. New PAR vote

9. Next Meeting Announcement

10. Adjourn

The Chair asked if any member objected to the F17 (Louisville, KY) minutes as submitted to the Working Group. No objections were brought forward; therefore, the F17 Minutes were unanimously approved at the S18 Pittsburgh, PA meeting. Rod Stahara made motion seconded by second by Said Hachichi.

The Chair reviewed the status of the current document (see below)

C57.12.20-2011 published on September 20, 2011.

10-year cycle ends September 20, 2021

PAR approved by NESCOM June 2012.

PAR Extension granted Dec 2016

PAR Expires December 31, 2017 (1 yr extension)

D6 Approved at 9/28/2017 RevCom Meeting

C57.12.20-2017 published 11/20/2017

The Chair thanked everyone for their hard work to get C57.12.20 document published.

Primary focus for this meeting is agreeing on the agenda for the next revision. The Chair suggested the following topics to be considered . . .

Introduce and address the platform mounting arrangement into the standard. This topic will not be pursued in the next revision.

Update 12.20 to reference 12.39 regarding tank pressure and pressure relief. Carlos Gaytan agreed to head this up.

Three phase connections are currently delta and wye only. Do we want to include the TT connection in this standard? Giuseppe Termini agreed to head this up

LV Terminals. We need to address some of the interchangeability discussion. We need to make sure that this standard follows what is being addressed in C57.19.02 ,i.e. tank hole and stud sizes, etc. The Chair suggested that we wait until C57.19.02 gets further along to avoid the duplication of effort. Agreement from the members to defer this activity until C57.19.02 is further along and we have a clearer direction.

There are some things in the document that may need to be rearranged and placed in different clauses., eg, lifting lugs & support Lugs. Are they tank features or accessories? The Chair (Al Traut) agreed to work on this.

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Should we consider adding the requirements for coastal application to align with 12.30 Enclosure Integrity? Mike Thibault Agreed to work on this. Bill Wimmer agreed to help.

The Chair pointed out that technically we are without a PAR . . . Between now and the next meeting let’s look at the scope and purpose to submit for the PAR

Current Document lists . . .

Title

IEEE Standard for Overhead-Type Distribution Transformers 500kVA and Smaller: High Voltage, 34 500 V and Below; Low Voltage, 7970/13 800Y V and Below

1.1 Scope

This standard covers certain electrical, dimensional, and mechanical characteristics and safety features of single- and three-phase, 60-Hz, liquid-immersed, self-cooled, overhead-type distribution transformers 500 kVA and smaller, high voltages 34 500 V and below and low voltages 7970/13 800Y V and below.

1.2 Purpose

This standard is intended for use as a basis for determining the performance, interchangeability, and safety of overhead-type distribution transformers and to assist in the proper selection of this equipment.

The next meeting will be held October 2018 in Jacksonville, FL

Meeting adjourned 11:40

Submitted by: Ed Smith

C57.12.28, .29, .30, .31 & C57.12.32 – Enclosure Integrity – Dan Mulkey

Dan Mulkey presented the following minutes from the working group meeting on March 27, 2018 at 8:00 a.m. in with 77 in attendance.

Dan Mulkey called the meeting to order at 8:01 AM. Introductions were performed.

Membership changes were noted:

Removed: Juan Saldivar, Rebecca Giang

Added: Israel Barrientos, Audrey Siebert-Timmer, Robert Stinson, Shelby Walters

Quorum was verified. The working group consisted of 46 members, requiring 23 for quorum. 34 members were confirmed at the time of counting. 36 members were confirmed afterwards through the roster.

Alan Traut made a motion, seconded by Mike Thibault, for approval of the minutes. No opposition was raised so the minutes were unanimously approved.

Dan Mulkey made a call for any essential patent statements and responses. None were raised.

Mike Thibault made a motion, seconded by Alan Traut, for approval of the agenda. No opposition was raised so the agenda was unanimously approved.

Status of Standards:

C57.12.28 Standard for Pad-Mounted Equipment – Enclosure Integrity,

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Published July15, 2014, Revision Due: 12/31/2024

C57.12.29 Standard for Pad-Mounted Equipment – Enclosure Integrity for Coastal Environments, Published August 8, 2014, Revision Due date 12/31/2024

C57.12.31 Standard for Pole Mounted Equipment – Enclosure Integrity, Published September 20, 2010, Revision Due: 6/17/2020, Corrigenda approved May16, 2014

C57.12.32 Standard for Submersible Equipment – Enclosure Integrity, Reaffirmed 3/7/2008, Revision Due: 12/31/2018, PAR expiration: 12/31/2019

Old Business:

Exposure test evaluation 4.4.1.3 (Comparison of ASTM D1654-05 vs. -08) by Justin Minikel:

Justin Minikel gave a presentation on scribe creepage which will be posted on the website. The 2005 and 2008 ASTM standards use different pass fail criteria, with the 2008 standard allowing some samples to pass that would not pass the 2005 standard. Justin recommended keeping the reference to ASTM D1654 in the Enclosure Integrity document as a specific reference to the 2005 publication, and not just a general reference.

Following the presentation, a brief discussion occurred. It was asked if the test in question is a paint test or a corrosion test. Justin clarified that it is a paint test, which affects corrosion, but it’s more of a test of adhesion. Mike Thibault commented that the reason a transformer is painted is to keep it from corroding, so if the paint disappears it ought to fail the test.

Ali Ghafourian asked why ASTM changed their test for the 2008 standard. Justin wasn’t sure of the reasoning, but mentioned it is a very significant change between the 2005 and 2008 standards, which is uncommon for ASTM.

A motion was made by Steve Shull and seconded by Carlos Gaytan to keep the 2005 revision of the ASTM D1654 standard as the reference in all corrosion references across the Enclosure Integrity standards. The motion passed with unanimous approval.

During the discussion of the motion, Ron Stahara asked if we had ever referenced any other versions of the ASTM standard. It was suggested we had at some point, and Justin Minikel added this was the first time there’d been a major change to the ASTM D1654 standard. Jerry Murphy added that we have referenced seceded versions of ASTM standards for other IEEE standards such as oil testing. Dan Mulkey said he would be happy to provide feedback to ASTM about the working group’s review of the 2008 update to ASTM D1654 if someone could provide a contact.

Abrasion Test 4.4.8 by Dan Mulkey

Dan Mulkey presented a revised version of section 4.4.8 which removed the term ‘rust’ from the document. A motion was made by Alan Wilks and seconded by Ed Smith to accept the words as presented in the draft document. The motion passed with unanimous approval. No further discussion occurred during the motion.

Gravelometer 4.4.9 by Jeremy Van Horn

Jeremy Van Horn presented the differences between the language used in the C57.12.32 draft and the other four published Enclosure Integrity standards for the gravelometer test. There were a few small editorial changes which were presented with little discussion.

The following changes of substance were presented:

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The sentence “The following test is required only for coated surfaces on the exterior of the enclosure” is in each of the other four documents, but was not included in the C57.12.32 draft document.

The test pressure should read 414 kPa (60 psig) instead of 410 kPa (60 psig)

C57.12.28 and C57.12.31 use a rating of 4B to 9B for the passing criteria. This is inconsistent with the C57.12.32 draft which uses the term “the minimum rating shall be 7B per SAE J400”.

C57.12.28 and C57.12.31 use a maximum rusted chip size of 3 mm for the passing criteria. This is inconsistent with the C57.12.32 draft which gives a maximum chip sizes of 2.0 mm.

A prolonged discussion followed the presentation. The question was asked if it was worth keeping the reference to SAE J400, or if it would be better to simply state a maximum chip size. There was a comment that a 6A rating may be better than a 7B rating because of the difference in both chip size and quantity. Jerry Murphy commented that a plate with very high number of pin-pricks would not be ideal, even if the pricks are small.

It was commented that it might not be wise to increase the maximum paint chip size beyond the 2.0 mm used in the C57.12.29 and C57.12.30 standards. A smaller chip size is better than bigger because it will result in more robust coatings. As a side note, Justin Minikel was added to membership by Dan Mulkey.

A motion was made by Justin Minikel and was seconded by Steve Shull after an accepted friendly amendment by Steve to change the phrasing to: “The minimum rating shall be 7B per SAE J400, and no rusted chip shall be greater than 2.0 mm (0.08 in) in Diameter. The motion passed unanimously.

A motion was made by Robert Stinson to add following clause back into the paragraph: “the following test is required only for coated surfaces on the exterior of the enclosure.” The motion was not seconded and failed.

Other comments on the draft document

Dan Mulkey began to lead the working group through the remaining proposed changes in the draft document.

Section 3.2.2 Submergibility test

A prolonged discussion regarding the nature and necessity of the submergibility test occurred. Dan Mulkey explained that it is a more severe test to test at 1 foot of water submersion than 10 feet of water submersion because there is less seating force on the gaskets of many components at 1 foot of water pressure. Two possible options can be used for testing: either the tank can be put under vacuum and submerged to 10 feet of water, or pressurized and submerged with a small amount of water. Igor Simonov added that 10 feet of water submersion can be simulated by applying the appropriate level of vacuum. A discussion about the method and frequency of pressure measurements during a submersion test occurred. Igor Simonov suggested using a pressure data- logger to ensure that the appropriate pressure remained on the transformer for the entire test duration. This can be done along with a UV light inspection of the interior of the transformer after the test duration. Gary King suggested that a pressure gauge could be used instead of a data- logger, since knowing the initial and final pressures of the tank will indicate whether or not it remained sealed. It was then discussed that measurements could be taken at a variety of different intervals, but an appropriate interval was not concluded by the working group. Mike Thibault asked what the advantage of using a

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data-logger instead of visually checking for bubbles was. Igor Simonov suggested that it would prevent the need for someone to be present for the duration of the test. A question was asked if it was necessary to run both a positive and negative (vacuum) pressure test. Dan Mulkey suggested that both should be done. Brian Klaponski asked if there was a need to be running a type test for sealing at all, and that it may be impractical to perform the test on many larger units.

A motion was made by Igor Simonov and seconded by Anil Dhawan to change the submergibility test to require a vacuum test pressure simulating 10 feet of water applied to the tank for 7 days while recording the pressure with a data logger. At the end of 7 days, the tank would be checked for loss of pressure and water leaks. The motion failed with 4 in favor and 15 opposed.

A motion was made by Mike Thibault to include a vacuum test along with the pressure test with the following parameters:

Apply 10 feet of pressure (4.5 psi)

1 foot of water submersion

7 days of vacuum, 7 days of pressure

Pass criteria: the final gauge reading is the same as the initial (within 0.1 psig) and no observable water leaks

Due to time constraints, the motion was tabled until the next meeting.

There was no New Business. The meeting was adjourned at 9:15 am.

Next meeting—Oct 16, 2018 in Jacksonville, FL, USA

Copies of any handouts and/or subgroup reports will be made available as separate items but referenced by these minutes.

The following attendees requested membership and will be added to membership for the Fall 2018 meeting:

Michael Morgan

Babanna Suresh

Submitted by: Jeremy Van Horn

.

C57.12.34 – Three Phase Pad-Mount Transformers – Ron Stahara

Ron Stahara presented the following minutes from the working group meeting on March 26, 2017 at 3:15 p.m. with 86 in attendance.

Ron Stahara called the meeting to order and introductions were made. The rosters were circulated. The names of those in attendance are recorded in the AM system. To establish a quorum, a members list was displayed on the screen and those who saw their names were asked to hold up their hand. From this count of hands, it was determined that a quorum was established. The four mandatory IEEE Patent Slides dated 01/02/18 calling for Essential Patent Claims were read and no new patents were brought up. The agenda was presented and a motion to accept it was made by Jerry Murphy and seconded by Marty Rave. The motion was approved unanimously. The Fall 2017 Minutes were

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presented and a motion to accept it was made by Anil Dhawan and seconded by Jerry Murphy. The group approved the motion unanimously.

Prior to this meeting, the chair asked for volunteers from the working group to help review and flesh out the Annex. The following is a list of the volunteers by section.

Annex Section Volunteer

A.1 General Wes Suddarth

A.2 Bails Wes Suddarth

A.3 Overcurrent Protection Dwight Parkinson

A.4 Under Insulating Fluid Load Break Switches Israel Barrientos

A.4.7 De-energized Tap Changer Primary Under insulating Fluid Tap Changer Switch Israel Barrientos

A.5 Oil Level Indication Devices Weijin Li

A.6 Temperature Indication Devices Weijin Li

A.7 Special Accessary Cabinets Gary King and Rhett Chrysler

A.8 Under Insulating Liquid Surge Arrester Israel Barrientos

A.9 Internal Current Transformers Fred Friend and Pugal Selvaraj

a.10 Core Hot Spot Monitors Pugal Selvaraj

During the meeting each section was presented and explained by each volunteer with the exception of Fred Friend as there was some confusion on this section. Fred stated that he would provide the internal current transformer section within two weeks. During these presentations, a couple of observations were put forth. Ali Ghafourian stated that he would recommend a general introductory comment to help explain the purpose as this annex as it being a guide to what is available and not seen what is required to be installed on each unit. Giuseppe Termini went on to state that some the items presented are directly related to safety for both the general public and personnel working on the transformers. Therefore, there needs to be enough information provided in this document so that an unsophisticated user would not make a safety related mistake in either the selection or combining of an accessory item(s). Another issue that was brought up by Brian Klaponski was the location and application of an interlocking mechanism for load break switches. He stated this when looking at the exterior accessory cabinet section and related it back to the safety of the application referred by the Ali and Giuseppe. The final item that was brought out during this discussion was a request to include in the temperature indicating device section the use of 4 – 20 mA output as well as dry contact which was currently addressed. Gary King stated that he believed that all of the figures had been changed to what had been discussed in the previous meeting but he would review them in the new draft to be sure.

In new business, Igor Simonov brought up the discussion of permanent tank deformation due to negative pressure. He stated that had seen in their company. The pictures of this were presented in the PowerPoint slide presentation and are now posted in the agenda PowerPoint PDF on the website. A motion was made by Ali Ghafourian and seconded by Marty Rave to change the verbiage in the document as shown below.

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8.10.1 Strength

The tank shall be of sufficient strength to withstand a range of a gauge pressures between -5 psig (-35 kPa) to of 50 kPa (7 psig) without permanent distortion, and 103 kPa (15 psig) without rupturing or affecting cabinet security as described in IEEE Std C57.12.28.

The motion passed unanimously. Carlos Gaytan stated that he would review this section to see if this was being addressed in the new C57.12.39 and report back to the group in the Fall 2018 meeting.

The chair asked Steve Shull to develop a new draft of the standard combining the items and section changes that were put forth during the meeting. The chair requested that he provide a pdf and a DOC version. The mechanism for tracking changes will be provided and explained in the email so that changes be reviewed in the Fall 2018 meeting.

With this, the meeting was adjourned, Stephen Shull recording.

C57.12.36 – Distribution Substation Transformers – Jerry Murphy

This working group did not meet.

C57.12.38 – Single-Phase Pad-Mounted Transformers – Ali Ghafourian

Ali Ghafourian presented the following minutes from the working group meeting on March 26, 2018 at 1:45 p.m. with 77 in attendance.

The Chair called the meeting to order at 1:45 pm.

Meeting attendees introduced themselves including consultants providing their affiliations to the Working Group. Rosters were circulated to record the meeting attendance.

The Chair called for essential patents as required using the statement provided in the general session. No essential patents were brought forward.

A quorum was established with 28 of 37 working group members present.

The agenda for the meeting was presented, and Kent Miller offered a motion with a second from Jerry Murphy to approve the agenda. The agenda was unanimously approved.

The minutes of the 2017 Fall meeting in Louisville, KY have been posted on the website since shortly after that meeting for the working group members to review. There were no suggested changes to the meeting minutes. Ron Stahara offered a motion with a second from Ed Smith to approve the meeting minutes. The meeting minutes were unanimously approved.

The Chair informed the working group members the PAR has been approved and expires in December 2021. The most recent standard was published in August 2014, and the next revision is due in December 2024.

Giuseppe Termini presented the results of responses from manufacturers to the transformer accessories survey issued by the Task Force comprised of Wes Suddarth, Craig DeRouen, and Giuseppe Termini. The survey responses showed customer demand for various transformer accessories. The survey results are included as a separate file accompanying the meeting minutes.

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Israel Barrientos presented recommendations for revisions to existing figures in C57.12.38 as the result of a review performed by the Task Force comprised of Jim Spaulding, Mike Thibault, and Israel Barrientos. The recommendations are included as a separate file accompanying the meeting minutes.

Mike Thibault offered a motion with a second from Jeff Valmus that a Task Force be created to provide a draft of an annex to C57.12.38 regarding all the transformer accessories included in the Task Force survey including the additional electrical and mechanical requirements specified by customers not included in the original survey. The Working Group members approved the creation of this Task Force by a vote of fourteen For and one Against the motion. The Working Group discussed the information to be included in the draft of an annex regarding transformer accessories. Recommendations included providing a general description, purpose, and installation location for the transformer accessory. Additional discussion by the Working Group cautioned about providing too much detail regarding the installation location of a transformer accessory.

Giuseppe Termini offered a motion with a second from Steve Shull for the Working Group to review and determine which electrical and mechanical requirements specified by customers not included in the original survey to be included in the draft of an annex. The Working Group members approved the motion with unanimous approval. The Working Group reviewed and determined the following be included in the draft of an annex: fault indicator provision, ground connector, HV breaker, LV breaker, under oil arrester with disconnect switch, dual voltage switch, HV bushing insert, drain valve with sampler, LV surge arrester, LV bushing screw on spade terminal or setscrew connector, welded bayonet fuse drip tray, extra parking stand, and fault indicator.

The Task Force of Giuseppe Termini, Wes Suddarth, and Craig DeRouen will be expanded to include Jerry Murphy, Steve Shull, Jim Spaulding, and Igor Simonov and develop a draft of an annex regarding transformer accessories for Working Group review at the Fall 2018 Working Group meeting.

The Task Force of Israel Barrientos, Jim Spaulding, and Mike Thibault will continue their work and develop revised Figures to increase clarity for Working Group review at the Fall 2018 Working Group meeting.

There was no new business.

The Chair announced the Working Group will meet at the Fall 2018 meeting in Jacksonville, FL.

The Chair adjourned the meeting at approximately 2:55 pm.

Submitted by: Martin Rave

C57.12.39 – Tank Pressure Coordination – Carlos Gaytan

This working group did not meet.

Task Force on Transformer Efficiency and Loss Evaluation – Phil Hopkinson

Phil opened with discussing the current mission of this task force being to gather loading information. The purpose of gathering this information is to ensure the industry is prepared in case of future governmental regulatory discussions. It was asked by why a member of the DOE group was not attending these meetings, the answer was that no one precisely knows the reason but likely travel expenses not being approved. It was proposed that the Sub Committee send an

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invitation to the DOE shareholder. It was mentioned that Dan Mulkey was contracted by PECO to process loading data. It was asked if Jeremy Dumme (noted as DOE representative during the meeting) was an employee of Metglas and therefore had a conflict of interest. The answer was that this was not the same person that works for Metglas. Phil presented the following minutes from the task force meeting on March 26, 2017 at 9:30 a.m. with 112 in attendance.

The Chair welcomed the members to the meeting and noted that the high attendance indicted the level of interest in the topic. This was the fourth meeting of the task group. Rosters were circulated. Members were reminded of the essential patent requirements of IEEE, although as a task force to develop a database, this group would not be submitting any PARs and this this might not apply. Again as TF for data gathering and no standards are developed, a quorum verification is not required. The agenda was presented to the TF and approved as shown. The minutes of the last meeting were approved as submitted. Phil updated the group as to what utilities had submitted data.

i. PG&E

ii. So. Cal. Ed.

iii. PECO

iv AEP

v DUKE

vi Con Ed

Brad Kitrell provided a summary loading data from Con Ed.

Overall Average Capacity Factor: 26%

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The Con Ed data is for the period February 2017 to February 2018 for Network Transformers. For multi-banks the average Capacity Factor was 23% and for street feed it was 30%. The breakdown for Boroughs is given in the following chart:

Data should be available for the next meeting from Southern Cal Ed, PECO and Duke Energy. Dun Mulkey has provided templates for presenting the data and is available to assist in insuring the data is compatible.

Igor Simonov of Toronto Hydro provided a brief summary of Canadian experiences.

Phil Hopkinson reported that the DOE issued Docket #EERE-2017-BT-TP-0055, requesting comments on 15 questions had closed on November 6, 2017. Phil reviewed the comments from the 25 posted responders and summarized them in the following table:

Items Position DOE Asked 15 questions The number(s) listed in with the CO name indicates the question(s) that were responded to by the CO. 5, 14 NEMA Pushes for no new limits on losses 11. Powersmiths Sees loading both light and high, recommends no changes to losses 22. NRECA No further restrictions but WESC likes EPA program 23. Prolec Do not change losses 24. APPA Do not change anything 25. Howard Ind. Do not change. 16. EEI Sees loading increasing, wants limits on total losses 6. AK Steel Sees increasing loads and advocates limit on total losses 3, 13 HVOLT Inc. Summarized loading feedback and pushing for limits on total losses based on

likelihood of growing future loading. 15. ACEEE +ASAP Sees light loading and wants Testing done at lower % Load 17 Metglass Sees light loading and wants Testing done at lower % Load 18. PG&E, SCE, SDG&E Like IEEE Data Collection Program 8. Babanna Suresh Wants rectifier transformers included in efficiency standard. 9. Babanna Suresh Testing at 100% load added, clarify rectifier transformers 2, 10, 12, 19, 20, 21. Annon Anti Global Warming comments 4. Oleh Iwanuslw Announced a portable losses test pushing limits on core, load losses

On March 12th Mr. Hopkinson discussed the comments with Jeremy Dummu of DoE who made the following observations:

1. Comment collection completed by DOE for now

2. No public meeting planned to review comments

Borough Capacity Factor Design

Manhattan 27% Second

Brooklyn 28% Second

Queens 23% Second

Bronx 27% First

Westchester 16% First

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3. If NOPR is issued then a public meeting will be held

4. Navigant Consulting is still involved

5. Mike Rivest is still the Navigant contact.

Mr. Caskey of NEMA restated the views of the NEMA Transformer manufacturers:

NEMA strongly supports energy efficiency and represents the manufactures of numerous energy efficient products ranging from NEMA Premium Motors to LED lamps to residential and commercial energy management systems to utility distribution automation equipment.

NEMA provided the distribution transformer energy efficiency standard that became the cornerstone for the first DOE minimum energy efficiency regulation for distribution transformers, and fully supported the second round of DOE distribution transformer efficiency investigation.

At this point, the current DOE distribution transformer energy efficiency regulations are at the highest level of energy savings that maintain a healthy transformer industry in the United States. Current regulations require efficiencies from roughly 98% to over 99%.

NEMA is concerned that going to higher efficiencies for distribution transformers will reduce the number of suppliers available to provide steel inputs for transformer manufacture; particularly in light of recent tariff discussions that could negatively impact steel prices and national security.

Research has shown that testing for 35% loading for dry-type transformers and 50% loading for liquid filled distribution transformers is appropriate.

Adding an additional test at 75% load factor or applying total loss calculations will increase the burden and costs on manufacturers (and buyers) without significantly increasing the overall efficiency of new transformers.

The area for greatest efficiency improvement is to replace old transformers that were manufactured prior to the 2010 distribution transformer energy efficiency rule with transformers manufactured according to the current (2016) DOE regulation.

The next meeting will review any additional collection of data from the loading study.

Documents related to this task force can be found on the IEEE Transformer Committee website at http://transformerscommittee.org/ (under distribution transformers – TF DOE Energy eff).

The meeting was adjourned at 10.45 am

Submitted by: Phil Hopkinson

Task Force on Distribution Transformer Monitoring – Gary Hoffman

Gary opened by presenting the motion brought forward from the task force to approve filing for a PAR. The following discussion took place:

Q: What is the difference between what this Task Force seeks to create and the existing C57.143

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A: C57.143 is power and distribution has different concerns and needs.

Q: What is the thinking in relation to the smart grid

A: Assessing critical assets/applications and public safety.

Motion was unanimously approved. Gary Hoffman will be the chair. Gary presented the following minutes from the task force meeting on March 27, 2018 at 4:45 p.m. with 61 in attendance.

Steve Shull called the meeting to order. Steve explained this was the first meeting of this Pre-PAR study group on Distribution Transformer Monitoring. Steve stated that he had assigned Gary Hoffman as the Working Group Chair. Mike Thibault was appointed by Gary to be Secretary. Gary asked that the group introduce themselves. Steve Shull and Mike Thibault started the circulation of the rosters. Garry explained to the group since this was the first meeting everyone had the opportunity to become members. If a person so choses, please note this on the roster as it is circulated. Gary explained that this group is enabled to operate in it present state for six months. During this time we need to determine what type of document that we would like for this to be. Gary explained that documents labeled as “standards” include items that direct the design of the performance and sometimes interchangeability details of products they address. “Recommended practice” documents provide directions to the user in the form of should statements to the address the way the product or test should be administered. Guides provide an overall direction and typically use the word “may”. Gary also explained that it was critical that we obtain a PAR because without this we can not do any work because as a group will not indemnified. So based on this discussion, Gary proposed a title to the group. After a discussion, the following was proposed developed.

Title for Document – “Guide for Monitoring Distribution Transformers”

A motion was made by Raka Levi and seconded by James Dorsten to accept this as our document title. Of the group 50 were in favor, 9 opposed and 1 abstained. The motion passed.

Gary explained that the next step would be to determine the Scope of the Guide. There was a lot of discussion as to if there should be Online and Offline Monitoring. It was generally agreed that these should be discussed as the document was developed as long as these items remained in the scope that we craft. After some discussion the group agreed to the following scope wording.

This guide covers identification of the key measureable parameters that can be monitored for obtaining an indication of the condition of liquid-immersed distribution transformers.

There was some concern that this would not include submergible transformers which are distribution transformers. A motion was made to send this title and scope to the STNP subcommittee to seek their co-sponsorship. This motion was made by Steve Shull to accept the scope as presented and to seek the co-sponsorship of the STNP subcommittee. It was seconded by Said Hachichi. The motion passed with 32 “for”, 10 “against”, and no abstentions. Mike Thibault volunteered to do this in the STNP subcommittee meeting.

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Gary said that the next item was to determine if a Purpose of the document should be crafted. He explained that this was not really necessary and the majority of the documents do not include them. Again some discussion but in the end the group decided not to formulate this item. Steve Shull made a motion not to develop a purpose for this document. It was seconded by James Dorsten. The motion passed unanimously. Gary will submit a PAR request for this TF. Jim Graham will survey the AdCom of the Transformer Committee to determine their direction. Once this is completed and approval is gained, the PAR application will be submitted to NesCom. It was projected that this would be done by the July NesCom meeting date.

Submitted by: Mike Thibault

C.3 Old Business

• None

C.4 New Business

• Ron Stahara wanted the group to recognize Phil Hopkinson and Craig Colopy for their tenure of service.

• Phil Hopkinson brought up continued issues with Core Gassing. He noted that PCS did work previously on publishing instructive material to mitigate core gassing but was too late for 2015 editions of C57.12.00 and C57.12.90. He also noted that this was an issue on >= 15 kV Lo-High coil construction with wound cores.

Dan Sauer noted a concern with requiring PD testing on very small transformers

The Chair encouraged the Sub Committee to attend the working groups and task forces working on this issue.

Dan Sauer noted that there were often time slot overlaps with Distribution meeting and Dielectric test subcommittee meetings.

• Phil Hopkinson brought up continued issues with solar farm inverters interacting with transformers resonance between components of the transformer.

Dan Sauer asked what was considered the “incoming” in this scenario, it was clarified that the “incoming” was between the inverter and the transformer.

Weijin Li asked why a floating Y was used in lieu of a Delta, the answer was not known.

Phil asked if a solar transformer provision should be added to the Distribution SC.

C.5 Chairman’s Closing Remarks and Announcements

Steve had no closing comments to the SC except to see them in Jacksonville in fall of 2018.

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C.6 Adjournment

Steve adjourned the meeting as provided in the meeting agenda at 10:15am.

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Annex D Dry Type Transformers Subcommittee

March 28, 2018

Pittsburgh, PA USA

Chair: Charles Johnson

Vice-Chair: Casey Ballard

Secretary: David Stankes

D.1 Introductions and Approval of Agenda and Minutes The Subcommittee met on March 28, 2018 at 1:30PM in the Monongahela room of the Omni William Penn Hotel.

The meeting was convened with 31 people in attendance. 20 of the 28 members of the Dry Type Subcommittee were present, so quorum was reached. Two guests requested membership, and request will be reviewed to determine if they meet eligibility requirements. The attendance roster will be kept in the AMS.

The Chairman reviewed the proposed Agenda. A motion to approve the agenda was made by Phil Hopkinson and seconded by Tim Felix-Mai. The agenda was approved unanimously.

The chairman noted that the unapproved minutes from the Fall 2017 SC meeting held in Louisville had been posted on the SC Transformer Committee website. A motion to approve the minutes was made by David Walker and seconded by Jim Antweiler. The minutes were approved unanimously.

D.2 Chairs Remarks Chair reminded the SC that it is not allowed to record proceedings or take pictures of any slides that are presented. Exception is the recording of meeting to support the creation of written meeting minutes, but recording must be destroyed upon completion of written minutes.

D.3 Working Group/Task Force Reports

The next order of business was the presentation of the reports of the various working groups and task forces. See the following sections for the individual reports:

D.3.1 Revision of IEEE PC57.12.01 - Dry Type General Requirements Chair Casey Ballard

The working group met in the Conference Center B Room of the Omni William Penn Hotel.

The meeting was called to order at 1:45 PM by Chairman Casey Ballard.

Chairman made opening comments.

Introductions were made by all participants. WG Roster has been distributed and signed.

The meeting was convened with 42 participants, 18 of them are members. Quorum was reached (23 current members). 3 guests requested membership, 1 request granted. The attendance was reported in the AMS.

The Agenda was approved unanimously being no negative votes (moved by T.-F. Mai and seconded by V. Tendulkar).

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The Minutes of Fall 2018 Louisville meeting was approved unanimously (moved by J. John and seconded by V. Tendulkar).

The chair made a call for known patent disclosure. No patent related issues were claimed.

• Draft 4 of the revision has been circulated prior to the meeting. • Chair informed on the revisions that were incorporated into Draft 4 as results of the decisions

made in Fall 2017 meeting:

- Maximum system voltage column added to former Table 5 (new Table 4). Maximum voltages: 25 kV nominal with a 27 kV maximum, 34.5 kV nominal with a 37 kV maximum, 46 kV nominal with a 49 kV maximum.

- Designation of the cooling classes of transformers modified in Section 5.1. Some discussion on the cooling designation:

P. Hopkinson asked on clarification of the case when a transformer installed in the wind tower’s sealed nacelle – the transformer is not sealed in this case.

C. Johnson commented that typical GNGA case uses nitrogen; agreed to use “dry air or nitrogen” definition of this type of cooling.

J. Antweiler asked about clarification of “slash” in the cooling designation. It was agreed to define that “slash” means the transformer with dual rating based on the cooling. Also, the additional example on ANAF (no “slash”) case will be added for a clarity.

- Partial discharge test typo ( from version 2015) corrected in Section 5.10.3.5: reference to Table 6 has been substituted for reference to Figure 2.

Old business

• Discussion on the Short Circuit Thermal Limits (Table 15, new Table 14):

- David Stankes’ proposal for Sections 7.8 and 7.9:

7.8 Effects of temperature on transformer windings during short-circuit conditions The winding temperature will increase during a short circuit, and care shall be exercised in the winding design and the application of the conductor material to avoid a significant loss of yield strength or damage to the insulation system in the period of fault duration. In most applications of dry-type transformers with normal application limits for fuses and circuit breakers, the duration of a short circuit is limited to a few cycles, and the added temperature-rise effects are minimal. Where it is determined that the fault duration is more than a few cycles and a need exists to determine by calculation the temperature rise for a specific application, the temperature rise may be calculated as described in 7.10.

The effect of the calculated temperature increase on a transformer in a specific application may thus be determined, and proper allowance made to ensure insulation system integrity and to decrease permanent reduction in conductor mechanical strength due to annealing, and to coordinate any temporary reduction in conductor strength with the applied forces at any time.

7.9 Temperature limits of transformer for short-circuit conditions

The final temperature of the conductor in the windings of transformers not exempted by Section 1.1, under the short circuit conditions described in 7.8, shall not exceed the values given in Table 15. The insulation system should be appropriately selected to withstand these temperatures.”

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C. Ballard commented that there is no test method available to quantify the short term insulation temperature limits. R. Marek noted that this IEEE WG shall make some input in the relevant IEC standard currently under revision. C. Johnson commented that the Table with the temperature limits was first introduced in 1998 revision and, probably, was related to the harmonization with IEC. Before that, no limits were defined. C. Ballard has reviewed the previous edition (1989) of the standard, but no better method of the evaluation or any recommended limits were found. P. Hopkinson proposed to look at the material thermal qualification test and make an estimate on the allowable temperature based on the agreed upon loss-of-life over sc event. R. Wicks commented that there are multiple aging durations were used in the different qualification cases (standards) and the selection of the appropriate life equation for such an estimation would be challenging. D. Stankes moved to accept his proposal for the revision of Sections 7.8 and 7.9 (see above); D. Walker seconded. With 18 supporting votes, the motion passed.

New Business

• Impedance value ranges. J. Medina proposed to consider defining the ranges of impedances in the Standard based on the fact that C57.12.01 references to the specific product standards for the recommendations on the impedance ranges, but none of the product standards has clear instructions on this issue. He proposed to use DOE recommendations on so-called “Normal Impedance Ranges for Dry-Type Transformers” as a base for these ranges. In the discussion, D. Walker suggested that usage of the existing OEM standards maybe acceptable. J. John was convinced that the impedance value shall come from the customer as it’s related to the system coordination not available to the transformer OEM. J. Medina has amended his proposal and agreed to consider the WG comments and send the amended proposal to the group later.

• T.-F. Mai proposed a motion to transfer the test description for the PD measurement from C57.12.01 to C57.12.91 and only keep the PD limits in C57.12.01, M. Gromlovits seconded. 17 voted in support of the motion with 1 abstained – motion passed.

Specifically, the following changes were accepted:

5.10.3.5 Partial discharge tests

Partial discharge tests are intended to verify that the internal insulation is free from damaging discharges. Partial discharge tests shall be performed as in accordance with the procedures described in IEEE Std C57.12.91.required by Figure 2. The transformers under this standard shall be designed to have a minimum extinction voltage of 1.3 times the rated voltage. For transformers which have only solid insulation in the region between high-to-low voltage, the partial discharge limiting values shall be applicable during both the induced and applied tests. The preferred arrangement for partial discharge tests is to have the transformer fully assembled before conducting the partial discharge tests; however, testing

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of coils separately is acceptable if approved by the user. As stated in the forward of IEEE Std C57.124™, bus assemblies may be disconnected from the coils when conducting the partial discharge tests.

Partial discharge extinction voltage is the highest voltage at which partial discharge no longer exceeds the intensity specified, as the applied voltage is gradually decreased from the inception level. If partial discharge inception does not occur, or is less than the intensity listed, the transformer is considered partial discharge free. Both winding ends of each phase shall be tested. No test shall be made on a terminal that is intended to be grounded. The general procedure for partial discharge testing is as follows: The voltage is raised to the pre-stress level of 1.8 times rated voltage, held for a minimum of 30 s, and is then reduced to the voltage level equivalent to 1.3 times rated voltage of the winding under test. After maintaining the 1.3 times rated voltage for 3 minutes, make the partial discharge measurement (see Figure 2). The ambient level of the instrumentation shall be considered when determining the final value of partial discharge. This value shall be measured in picoCoulombs (pC) using techniques described in IEEE Std C57.124 . This test procedure is to be used for all dry-type transformers. The maximum acceptable level of partial discharge for solid cast windings is 10 pC. The maximum acceptable level of partial discharge for resin-encapsulated windings is 50 pC”.

In addition, C. Johnson proposed to move a calculation of the sc test parameters to C57.12.91.

• P. Hopkinson commented on the problems with inverter transformers, where “Y” non grounded primary winding connection causes the high frequency voltage transferring to the HV side creating failures. C. Ballard explained that this type of transformers are excluded from this standard.

• C. Ballard informed that several members of WG proposed to discuss whether the Standard shall define the test voltages for the systems below 1.2 kV as in Table 5. After short discussion, C. Johnson moved a motion to eliminate system voltages less than 1.2 kV from this Standard, P. Hopkinson seconded; motion passed with 15 voted for and 3 abstained.

• Balloting plan in support of PAR expiration on 12/31/2020.

Closing remarks by C. Ballard: - We have completed our discussion on all the topics used to justify opening the PAR, along with a few others. - There are no major issues left open that I am aware of. - Therefore, I plan to send out Draft 5 to the WG for review and comment this summer so we can discuss the comments in Jacksonville this Fall. That gives us a full year to address any comments and I plan to seek SC approval for SA ballot in Fall 19.

Next Fall 2018 meeting: Jacksonville, FL, October 14-18, 2018.

With no further business, the meeting was adjourned at 3 PM.

Chairman: Casey Ballard

Secretary: Sasha Levin

D.3.2 Revision of IEEE PC57.12.60 - Dry Type Thermal Aging Chair Roger Wicks

The meeting was called to order at 1:45 PM by Chairman Roger Wicks. Introductions were made and attendance sheet was circulated.

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The meeting was convened with 27 people in attendance. 14 guests / 13 members present. Quorum was reached. 2 guests requested membership, one of whom can be added immediately and the second after he attends an additional meeting.

The Chairman reviewed the proposed Agenda. Motion to approve the agenda was made by Tim-Felix Mai and seconded by Chuck Johnson. The agenda was approved unanimously.

Motion to approve the minutes from Louisville Fall meeting was made by Sasha Levin and seconded by Tim-Felix Mai. The minutes from the Fall 2017 WG meeting were approved unanimously.

The chairman presented slides pertaining to essential patent claims (no issues were noted) and meeting guidelines. Chuck Johnson reminded WG that attendees were not allowed to record the meeting.

IEC 61857-41 - Changes - inception to current state Chairman described that 61857-41 has changed significantly since it was first introduced as a (15 page) New Work Item Proposal (NWIP) to current (43 page) Committee Draft (CD2). An even more recent document has been developed, but it has not been circulated to IEC and cannot be shared with IEEE at this time. There are mixed opinions within the WG regarding whether or not it will be issued as a CDV or CD3. Chair reminded the WG that several people from the C57.12.60 WG have also participated on development of the IEC document.

The changes from NWIP to CDV/CD3 include:

• Initial document assumed one winding style (layer winding), new document allows for all winding types.

• Defined screening tests for helping set up the test program – both thermally and electrically

• Inclusion of impulse testing as a requirement for all HV systems above 2.5kV

• Detailed Aging discussion to assist with selection of aging temperatures

• Number of Samples required per temperature set

IEC 61857-41 - Areas of “improvement” from IEEE C57.12.60

The chairman discussed areas where this work could impact the C57.12.60 document, including:

• Improved aging table which allows more realistic aging temperature options

• Concept of screening tests (thermal and electrical) to help set up the test plan in a more logical fashion

– Current “usability test” just ensures that coil quality is acceptable prior to testing

– New Pre aging design identifies realistic upper limit for thermal aging

– New dielectric breakdown screening helps set test parameters to ensure test can reach failure in a reasonable amount of time.

• Aging guidance (Annex B)

– Thermal screening ID’s the top temperature for aging test. Annex B helps identify the other temperature points used in the test.

• Discussion on Relative Aging Tests (substitution procedures)

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IEC 61857-41 - What now are the major differences vs. IEEE C57.12.60?

Chairman reviewed how the C57.12.60 document compared today to IEC 61857-41 CDV/CD3

• Method of test (Impulse / Operating Voltage Test)

• Clarity added to the IEC document. For example, how to perform dielectric test and how to determine failures. Procedure could be followed by someone not well versed in this type of testing.

• Rated BIL test vs. ability to test at 75% of rated limit as identified in screening test

WG discussed the effect of positive/negative waveform and impact on test. Chuck Johnson described the possibility of pockets of air that may affect the test, especially in open/varnished winding. Casey Ballard commented that if test is conducted in similar way (consistently), results should be acceptable.

Previously agreed to changes in our prior working group meetings

Chairman presented previously agreed upon changes decided by the WG including:

• Cold Shock Test on all types of models – extend beyond just cast

• Full Size Working Coil Definition modified

• PD Detection during the aging cycles for use as trending only (not a requirement) – placed into an annex

• Ratioing down a result from a tested system for use in lower voltages

Open Item – How to conduct a change to an insulation system? Chair described details of how current (varnish) changes are made to an insulation system using Sealed Tube test, including procedure and how the results are interpreted. Mark Raymond from UL confirmed use and interpretation of this test.

• Chair proposed possibility of using a single point test, using midpoint temperature used in original system (1000-1500 hours) as a way to approve changes to a current system.

o Described how to evaluate results, including discussion regarding “5 degree rule”

o Mark Raymond described round robin testing between different test labs that helped develop basis for 5 degree rule.

o Casey Ballard suggested it may be better to use half of the aging constant of the original system as basis for interpretation of results. The participants of the WG agreed that this may be a better basis on which to interpret results.

o Dhiru Patel and Joe Tedesco questioned whether a test that obtained a greater than 5 degree result would be granted approval. Mark Raymond confirmed that a higher thermal rating could not be assigned if a higher result compared to the original system was obtained.

• Chair proposed possibility of increasing either the temperature or the time of test for Sealed Tube test.

o Described how current test requires a long time to complete due to the time to collect the many minor components, and that a longer test time could be run (in same total amount of time as current test) by eliminating the need of adding the many minor components to the test.

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o Casey Ballard suggested that Sealed Tube test may be bypassed if the manufacture has sufficient technical test data supporting the change.

o Mark Raymond reminded the WG that the UL 1562 transformer document references use of UL 1446 to describe how changes may be made, and that there is a choice of running a Sealed Tube Test or a Single Point Test.

• Chuck Johnson voiced his opinion that the procedure for making changes perhaps should remain undisturbed, as there were more pressing areas to address in this revision.

Path Forward – What is needed to create final draft for WG approval to go to ballot?

Chairman suggested that the WG was in agreement on which items (if any) of the IEC changes should be incorporated into the draft.

• Casey Ballard made a motion for the Chairman to review the IEC document and include the new aging table and thermal screening test into the next IEEE C57.12.60 draft.

o Motion was seconded by Chuck Johnson.

o No discussion was noted and motion was passed unanimously.

• Joe Tedesco made a motion for the Chairman to review the IEC document and include new dielectric screening test to the next IEEE C57.12.60 draft.

o Motion was seconded by Chuck Johnson

o No discussion was noted and motion was passed unanimously.

• Solomon Chiang made a motion for the Chairman to add simplified change information to the IEEE document.

o Motion was seconded by Joe Tedesco

o Discussion:

Chuck Johnson reiterated that this topic had been discussed previously with no clear resolution, and that perhaps this area should be tabled until the next revision

Casey Ballard suggested that IEEE is silent on this subject and that the document should provide some guidance regarding this subject.

A question regarding where this information would reside. Solomon suggested that the information would be informative only, and adjusted motion to include this information.

Motion was approved with all in favor except one.

As there was no more time left, the Chair thanked the WG and meeting was adjourned.

Meeting was concluded at 3:00PM.

It was confirmed that the WG would meet again at the fall 2018 Transformer Committee Meeting.

Chair: Roger Wicks

Co-Chair: Dave Stankes

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D.3.3 Revision of IEEE PC57.12.58 - Dry Type Transient Analysis Chair Roger Wicks

The WG did not meet in Pittsburg as the document is complete and now available. Chair stated that a request for awards has been entered. Malia Zaman recommended that Stephen Antosz be notified that award request has been entered.

D.3.4 Revision of C57.12.51 – Ventilated Dry-Type Power Transformers – Chair Sanjib Som Casey Ballard reported the minutes of C57.12.51, as Sanjib Som could not be present. It was explained that the Working Group had approved Draft 3 of the document at the Pittsburgh meeting. Casey Ballard made a motion that the SC vote to send Draft 3 to editorial review to be followed by SA-balloting. Vote was conducted by a show of hands, with 18 approving the motion and none opposed. Casey Ballard offered to inform Sanjib Som of the vote to move forward, and ask that he contact Malia Zaman to help facilitate the next steps in the approval process.

The working group met in the Conference Centre B (CL) in Omni William Penn Hotel, Pittsburgh, Pennsylvania, USA.

The meeting was called to order at 11:00 AM by Chairman Sanjib Som.

Chairman made opening comments including that we only have this year before the PAR expires.

WG Roster was distributed for attendees to sign-in.

The meeting was convened with 23 participants, 11 of them are members. Since there are 12 members, quorum was reached and official business was possible to be performed. The document is done, no further membership is being entertained.

The Agenda were agreed upon with unanimous approval.

The Minutes of Fall 2017 Louisville meeting was approved with unanimous approval.

The chair made a call for known patent issues. No patent related issues were claimed.

Old business

- No old business

New Business Review of comments submitted by WG members for Draft 3:

The Draft 3 had been circulated prior to the meeting. 11 members voted "as is" , 1 (Jagdish Burde) had a comment. His comment was in regard to "tap ranges by KV Rating". Chair said that the comment was covered in C57.12.01 and not in the current working group. He opened C57.12.01 to section 5.3 to show the member. Casey told the member that NEMA ST20, which is for LV, covered his comment and that our document C57.12.51 does not cover LV. The scope was reviewed and it is for 1.2KV and above. The member withdrew his comment.

Chuck Johnson reminded the group that our document was written and intended as a guide/reference for those writing specifications.

Chair reminded the group that the customer can specify what he wants and reviewed the definition of the word "shall", and it is used in our document.

Discussion continued for several minutes regarding the purpose of our document. No further comments worth noting or action came from the discussion.

Phil Hopkinson attempted to bring up a proposal but was reminded that it was moved to C57.12.01, no further discussion.

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Chair asked for a motion to approve "Draft 3" - Jerry Murphy made the motion; it was seconded by Casey Ballard. Vote was unanimous "Yes” among all the 11 members present.

Chuck explained how the next steps in the process will work.

It was suggested that the Chair speak with Jim Graham and Malia Zaman for help moving forward.

Chair reviewed a few small editorial changes to the document including Phil Hopkinson's name being spelled incorrectly and Fig 1 being a bit fuzzy and it being replaced with a clearer representation.

Draft 3 is good to go.

After this, Malia arrived and discussed next steps with the chair. She agreed to help the Chair work through the next steps in the process.

Chuck congratulated the Chair and the group for making it through the process thus far.

Chair reminded the group that any comments from SA ballot must be reviewed by the group. Chuck said "you can expect comments".

Chair asked for volunteers to work through the comments ballot resolution process – Sanjib, Casey, Jerry, Chuck, Derek and Joe agreed to help. This will be the comment resolution group.

Meeting adjourned at 11:26 AM.

Next meeting: Fall 2018, Jacksonville, Fl, USA during October 14-18, 2018.

With no further business, the meeting was adjourned at 12:15 PM.

Respectfully submitted,

Chairman: Sanjib Som

Secretary: Mark Gromlovits Secretary

D.3.5 Revision of IEEE PC57.12.91 - Standard Test Code Chair David Walker

The Working Group met in the Conference Center A meeting room. The meeting was called to order at 4:45 PM by Chairman David Walker.

Chairman made opening comments.

Introductions were made by all participants. WG Roster has been distributed and signed.

There were 21 people present. 12 out of 19 members and 9 guests were present. A quorum was present. The attendance was reported in the AMS.

The agenda was approved unanimously. Motion: Roger Wicks, Second: Casey Ballard

The minutes of the October 2017 meeting in Louisville were approved unanimously. Motion: Vijay Tendulkar, Second: Derek Foster

The patent call was given. No one replied with any patent issues.

WG were reminded to do no recording or taking pictures

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Old Business

• Chair remained that the will PAR expires 12/31/2020 and there were only three meetings left for changes. The goal is to complete discussion and changes by Fall 2018 meeting. Use 2019 to complete Draft and submit for ballot.

• The chair had updated the draft and includes already made decisions (smaller revisions). It was distributed before the meeting to the WG.

• Technical Analysis of Equation 23 in Section 11.7.1 were presented by the chair

• In the last meeting a question was raised about validity of Equation 23 that corrects temperature results for ambient temperature differences. The chair explained that, fundamental Assumption of Eqns 23 and 24 is that ratio of temperatures is equal to ratio of power dissipated raised to an empirical power n.

• The chair made a proposal to make changes to 11.8.3. A discussion about Te started, does it have to measured? Is it really necessary? It resulted in the proposal: Te may be determined from test data from similar units with similar ratings; winding configuration and construction; and core dimensions, material, and excitation level. Motion: Casey Ballard, Second: Chuck Johnson without objection

• Because in C57.12.01 it was decided to move the PD to C57.12.91the Chair made a proposal to move the PD measurement section from IEEE C57.12.01 to this document with leaving the limits in C57.12.01. Motion: Jim Antweiler, Second Chuck Johnson. The motion passed

• Discussion about the word safety. It was decided that the word “safety” have to be removed from the standard

• Chair presented differences in the sound level tests in the latest IEEE C57.12.90 and IEC60076-10 documents compared to IEEE C57.12.91 prepared by Joseph Tedesco and Tim-Felix Mai. Chair proposed to adopt language from C57.12.90.

o Delete mention of tanks, radiators, etc.

o Change measurement to 12.90 required ANSI Type 1 (+/-1dB) from 12.91 required Type 2 (+/-2.4 dB)

o Include IEC language for microphone placement for measurements on bare core/coil

He will prepare a proposal for next meeting.

New Business:

• Chair proposes to approve changes from previous meetings and incorporate changes into Draft.

o Simplifies draft by reducing number of changes in any one version.

o Increases Readability of Drafts.

o Reduce workload at end of process.

o Can always reproduce changes by document comparison.

• Chair proposes to copy normative Annex B from C57.12.90 as Annex A of C57.12.91for correction of results from 60Hz to 50Hz and vice versa.

o Include corrections for no load loss, load loss, temperature rise, and short circuit test.

o None of these corrections are dependent on oil vs. dry

o Include B.5 for sound level.

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o Change language of ONAN-ONAF to Dry terminology.

o Delete section B.5.1.2 on ONAF- requires both 50 and 60Hz supplies

He will prepare a proposal for next meeting.

Janusz Szczechowski will send additional information about problems on converting measurements from 50Hz to 60Hz to the vice chair. Because this information is in German, the vice chair will translate it into English.

• Discussion about measuring resistance and temperature rise at leads or terminals, Jim will prepare wording or what have to be changed for next meeting

• The vice chair remained the group that if C57.12.01 will change the letter for cooling classes they have to be changed in our document, too

• Joe Tedesco mentioned that if the sound test method is changed the Sound test report have to be adjusted, too

With no further business, the meeting was adjourned, without objection, at 5:50 PM.

The Working Group will meet again at the fall 2018 meeting in Jacksonville, Florida, October 14-18.

Chairman: David Walker

Vice Chairman: Tim-Felix Mai (acting as Secretary)

D.3.6 IEEE PC57.16 – Dry Type Reactors Chair Art Del Rio

The working group for the revision of C57.16 met in the Conf. Center A room of the Omni William Penn Hotel on Monday March 26, 2018, at 4:45 PM.

1. Introductions and Call for Patents

The meeting was called to order at 4:45 PM by the WG Chair Art Del Rio. The meeting was opened with the introduction of participants. The WG Chair Art Del Rio did a call for potentially essential patents. None was reported.

1. 2. Circulation of Rosters

The attendance rosters were circulated.

3. Verification of Quorum

There were a total of 22 participants: 9 Members and 13 Guests out of which 4 guest requested membership; 3 were granted based on attendance.

9 of the current 12 WG Members were present and quorum to carry out business was met. The meeting agenda, which was circulated by email among members and guests on February 27,

2018, was presented to the participants.

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There were no objections or comments and the agenda was approved unanimously.

4. Approval of the minutes of the October 30, 2017, meeting in Louisville,

Kentucky.

The minutes from the F17 meeting in Louisville, which were circulated on February 27, 2018 by email, were presented to the participants.

There were no objections or comments and the minutes were approved unanimously.

5. Continue to discuss and review of the scope, purpose and rest of the draft.

The track changes function and the line numbering function have been activated in the draft.

5.a Scope and purpose

The scope has been updated. Arc-suppression coils is handled by IEEE C57.32. That reference should be added. A reference to an Annex with explanation of the different types of converter reactors for different

topologies of voltage source converters will be added together with the explanation that it is only AC-side converter reactors without direct current that will be covered by this standard.

5.b Proposal on 2-level, 3-level, multi-level converter reactors. Ulf Radbrandt

Ulf Radbrandt presented his proposal to explanation of the differences between 2-level, 3-level and multi-level converters. It was considered to be good and it will be included in the next draft of this standard. Most of the text will go to an informative Annex and a reference to that Annex (for more information) will be done from the scope of this standard. The actual section about requirements for converter reactors should be in a normative Annex in this standard.

5.c Dry-type air-core shunt capacitor reactors. Update on IEEE-PES Technical Report 16 and reference to IEEE C37.12, TLI, Dave Caverly

Dave Caverly did a presentation of Specific Requirements for Dry Type Air Core Shunt Capacitor Reactors.

Requirements for inductance for inrush limiting and outrush limiting capacitor reactors have always been defined by the breaker standards to limit peak currents and frequency to values that the breakers can handle but these limits were developed based on oil breakers which have different constraints than SF6 or Vacuum breakers.

Some changes have been made in C37.06 - 2009 which typically lead to lower inductance levels for outrush reactors. For inrush currents C37.06 - 2009 includes updated and alternate values however the basis is still Ixf. The latest version of the Application Guide for Capacitance Current Switching (C37.012 – 2014) indicates that in this revision “the subject of inrush and outrush current has not been revised, however this matter is currently under review”.

It is a confusing situation for Users. The TLI (Transient Limiting Inductors) report (PES-TR-16) helps a lot to explain the issue.

This standard (C57.16) does not give much guidance in this regard. It should refer to related switchgear standards and to TR-16 where applicable.

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The naming of this type of reactor were discussed, alternatives were: - Shunt Capacitor Reactors (in the standard today) - Transient Limiting Inductors (in TR-16) - Transient Limiting Reactors - Damping Reactors (commonly used but not physically correct, a reactor limits the current but a resistor damps the current). It was decided to keep the present naming (Shunt Capacitor Reactors) but with the addition “also called Transient Limiting Inductors” with reference to TR-16.

We should cooperate with the switchgear committee in order to avoid the trouble we had during the last revision of this document. Then we added a lot of information related to TRV issues on breakers when adding current limiting reactors and later we had to remove most of it after negative votes from switchgear committee members. Dave Caverly is also participating in the switchgear committee and will try to establish cooperation.

5.d Filter reactors. Sound section update, Klaus Pointner

Klaus Pointner received inputs too late before this meeting and did not have time to provide any proposed updates. That will be done to the next meeting.

5.e Discharge CLR for series capacitor banks. Updates, Mike Sharp

Mike Sharp provided comments for updates, no new items identified since last meeting.

5.f System considerations, TRV update based on meeting minutes. SWG committee follow up. Monty Goulkhah

Monty Goulkhah was not present during this meeting, Art Del Rio will ask him to provide proposed updates to the next meeting.

6. New Business

The Chair is looking for a volunteer for the revision of annex D, reactors supplied in enclosures. A question was raised regarding if this standard should give advice to end users, e.g. how to select the

inductance levels. The conclusion was that it is the end users or the system providers that performs the necessary system studies and those studies should not be covered by this standard.

7. Adjournment

The meeting was adjourned at 5:44 PM.

Respectfully submitted,

Chairman: Art Del Rio (a.delrio@ieee.org)

Secretary: Ulf Radbrandt (ulf.radbrandt@ieee.org)

Annex D

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D.3.7 IEEE PC57.124 – Dry Type Partial Discharge Guide Chair Tom Prevost

As Tom Prevost was not present, Rick Marek presented the minutes. Rick highlighted the need for additional volunteers to assist in the TF activities highlighted in the meeting minutes.

i) WG C.57.124 Meeting started in Conference Center at 8:00 am. There were 44 attendees with 15 WG members present of a total of 24 and the rest were guests. 9 guests requested membership to the WG. Chair Tom Prevost could not attend due to other engagements

ii) We had quorum to conduct the meeting.

iii) Essential Patent claims were mentioned. There was no response of an essential patent related to the work of our WG.

iv) Agenda for the meeting was approved.

v) Minutes of the Louisville, KY meeting from Fall 2017 were approved. Task Force (TF) work assignments for detailed work on the User’s Guide for the following topics were mentioned by the Acting Chair Richard Marek. Following TFs were set up with respective membership:

1) Normative and References, Definitions etc. – Casey Ballard, Chair with Mark Gromlovits 2) PD detection Systems and Test Procedure – Detlev Gross, Chair with William Larzelere,

Mai Tim-Felix, Alexander Kraetge, Janusz Szczechowski 3) Annexes – Chair, Ali Naderian with David Walker 4) Bibliography – Jagdish Burde Chair, Joe Tedesco Mr. Ali to provide PC C .57.113 template to the WG leadership to be shared among all assigned TFs to maintain consistency. Alex Kraetge suggested that the pre-test procedure for winding testing for single phase winding to be included for early detection of PD. vi) New Business.

Raja Kuppuswamy enquired if this effort would be for factory or field applications. Acting Chair responded it was for both after consultation with the TF members.

vii) Meeting was adjourned at 8:40 am

Respectfully Submitted Hemchandra Shertukde Secretary, C.57.124 D.4 Old Business

D.4.1 Status of Dry Type Transformers Standards • Chairman presented list of active standards and with noted board submission deadlines.

Highlighted that IEEE C57.12.51 was the standard that was closest to deadline, and that for the most part the dry type standards were in good shape in terms of meeting revision deadlines.

• The Chair asked members to solicit new members to the Dry Type Subcommittee and Working Groups. Reminded the group that many of the standard that are being worked on are relatively young and have room to grow and improve with their help.

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D.5 New Business

D.5.1 Revision of IEEE 259

Dave Stankes reviewed history of IEEE 259 and the planned work for the revision of this document.. The last revision was in 1999 by Bill Simpson When asked for a show of hands of whom had used this document, none of the 31 attendees raised their hand. 259 was not referenced in UL 1446, 1561, 506, 5085-1, 5085-2, 5085-3. It is referenced in C57.12.60 - but could be easily changed to another reference since the document has an active PAR. Dave made a motion: To [administratively] withdraw IEEE 259. It was seconded by Jim Antweiler and had 16 members vote affirmative, 0 negative, 0 abstentions. 4 members had left the meeting before we made it to this business item. The “administratively” was added based on a conversation with Jim Graham and Malia Zaman in which they said we do want to let it 'expire' instead of withdraw. The withdrawal process is only used if the document is not technically correct and requires a PAR and ballot pool in SA. The document wouldn't be available for purchase then. The administrative withdrawal (expiration) is a gentler resolution as the standard is still available for purchase and could be brought 'back to life' if we chose to in the future with a PAR. D.5.1 Recognition Before adjournment of the meeting, Casey Ballard noted to those who may have not attended the banquet on Sunday that the SA Standards Medallion had been awarded to our Chairman Chuck Johnson. This prestigious award was given to Chuck for his years of service to the IEEE Transformer Committee, and all present gave Chuck a round of well deserved applause!

D.6 Adjournment

With no further business, the meeting was adjourned at 2:40 PM.

Chairman: Charles Johnson

Vice Chairman: Casey Ballard

Secretary: David Stankes

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Annex E HVDC Converter Transformers and Smoothing Reactors Subcommittee

March 26, 2018, 3.15 pm Pittsburgh, Pennsylvania, USA

Chair: Michael Sharp Vice Chair: Les Recksiedler Secretary: Ulf Radbrandt

E.1 Introduction / Attendance

Introductions were made and the attendance list circulated.

There were 9 members and 13 guests present. No new requests for membership were received.

The total membership of the SC is 17. We needed at least a total of 9 members to be present in order to have a quorum. This was achieved.

The agenda for this meeting was approved.

E.2 Approval of the minutes of the April 3, 2017 meeting in New Orleans

The minutes from the Louisville meeting were approved.

E.3 Brief report on the meeting of the Administrative SC by Mike Sharp

Pictures and video recordings will not be allowed during meetings, except by officers and only if that is prior announced.

E.3.1 Reminder that IEEE C57.129 will expire in 2018 and IEEE 1277 will expire in 2020.

The standard for converter transformers, IEEE C57.129, will expire in 2018. That standard is now replaced by the published dual logo standard for converter transformers.

The standard for smoothing reactors, IEEE 1277, will expire in 2020.

E.4 Working Group Reports

E.4.1 WG IEC/IEEE 60076-57-129 – Transformers for HVDC applications

Chair: Ulf Radbrandt (IEEE) and Mats Berglund (IEC), Co-Chairs

Ulf Radbrandt made a presentation regarding the status of the work with the dual logo document. There has been a very good cooperation with the IEC WG. There were seven working meetings, of about 2 working days each, where three of those meetings were in connection with IEEE Transformers Committee meetings. The dual logo document was published in November 2017.

An IEEE standard has a maximum life time of ten years while an IEC standard has a stability date which might be longer. When we see that we must start the revision process for this dual logo standard then we must contact IEC with that request.

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E.4.2 WG IEEE P1277 - Dry-Type and Oil-Immersed Smoothing Reactors and Dry-Type Converter Reactors

Chair: Klaus Pointner (klaus.pointner@ieee.org) Vice-Chair: - Secretary: Ulf Radbrandt (temporary)

E.4.2.1 Introductions and Call for Patents

This WG meeting was conducted as part of the HVDC SC meeting.

The chair, Klaus Pointner, asked the members if they are aware of any essential patent claims that could affect the work by the WG but nobody expressed any knowledge of such claims.

The WG has different membership than the SC but the same roster. Klaus Pointner will retrieve the WG participation from the roster after the meeting.

There were 9 members and 13 guests present. No new requests for membership were received.

The total membership of the WG is 17. We needed at least a total of 9 members to be present in order to have a quorum. This was achieved.

The agenda for this meeting was approved.

The minutes from the Louisville meeting were approved.

E.4.2.2 Review of the Draft 3 of the standard.

Draft 2 was created before Christmas last year based on comments after the Louisville meeting. Draft 3 was created prior to this meeting based on new comments. Most comments have been received from Pierre Riffon. Comments have also been received from Mike Sharp, Klaus Papp and Alexander Gaun.

Pierre Riffon has proposed that we should add an optional chopped impulse test for converter reactors. A discussion regarding that followed. One reason for this is that HVDC links often are very important for the user and that motivates more stringent testing compared to similar ac equipment. Another reason for this test is that it is already an optional test for smoothing reactors in this standard. Comments offered against this test are that theses reactors normally are very well protected e.g. by location and by close surge arresters, they are normally not directly connected to gas-insulated switchgears and not oil-insulated. Another reason provided as to why not to add it as an optional test is that if the test exists as optional in a standard then many end users would select the test even if it is not technically motivated. A voting took place after a motion by Pierre Riffon, which was seconded by Waldemar Ziomek. The voting result was evenly distributed. The decision was postponed to later. We should check Cigré statistics on failures on converter reactors. Waldemar Ziomek volunteered to do that.

Pierre Riffon has also commented that outdoor temperature rise tests should be avoided since wind, rain and solar radiation might influence the test significantly. Klaus Pointner commented that smoothing reactors often are so big so it is practically very difficult to test them indoor and that the losses would increase the surrounding temperature which would affect the test and that ventilation of the room would do that also. It was agreed to write that the test should usually be performed indoors but that outdoor test also can be accepted. A note should be added to explain that if an outdoor test is to be performed then consideration to wind, rain and solar radiation should be taken into account.

An extended polarity reversal test was added in the dual logo standard for converter transformers. That test should be added also for oil-insulated smoothing reactors.

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Chris Ploetner has volunteered to update the sound parts of this standard at the fall meeting in Louisville. He contacted the chair of the WG prior to the meeting and informed that he cannot make it to the spring meeting in Pittsburgh. He will provide his input safely prior the next meeting

Pierre Riffon and Ulf Radbrandt volunteered to do investigations regarding the background of the short circuit requirements on smoothing reactors. We should also consider a threshold level, e.g. 10 times the rated current, for recommendation if evaluation of short circuit currents would be necessary. Normally the peak short circuit current is very low compared to the rated operating current compared to that relation for ac reactors.

RIV test might be applicable for ac side and not only for dc side converter reactors. It might also be valid for indoor reactors. Ulf Radbrandt will investigate this.

Klaus Pointner will send out a survey regarding the Annexes. Should we keep, modify or delete them?

• Annex A “Application of HVDC smoothing reactors” is only applicable for line commutated converters and the title should be updated accordingly.

• Annex E “In-service overloading of HVDC smoothing reactors” should be updated with reference to the converter transformer standard.

• Annex F “Smoothing reactors used in voltage source converters (VSC) HVDC schemes” should be updated with converter reactors that are subjected to both ac and dc current, i.e. for multi-level converters. This should be coordinated with the work in the WG for IEEE C57.16 “Dry-type series reactors” which will cover converter reactors without direct current, i.e. for 2- and 3-level converters. The WG for IEEE C57.16 is now introducing a description of the different types of converter topologies. This WG should consider to include that also.

Klaus Pointner would like to have new comments on Draft 3. The intention is to have a final draft ready to the Spring 2019 meeting.

E.4.2.4 New Business - There was no new business

E.4.2.5. Adjournment

The WG meeting was adjourned and the SC chair, Mike Sharp, took over with the SC meeting.

E.5 Old Business - There was no old business

E.6 New Business - There was no new business

E.7 Adjournment

The meeting was adjourned at 4:20 pm.

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Annex F Instrument Transformers Subcommittee Chair: Ross McTaggart (unable to attend this meeting) Acting Chair for this meeting: Thomas Sizemore (normally the Secretary) Acting Secretary: David Wallace

F.1 Introductions

The attendees introduced themselves and reported affiliations.

F.2 Quorum

16 of 36 members were present - quorum not attained. 21 guests also attended

F.3 Agenda An agenda was displayed for this meeting. No objections to the agenda were raised. No motion to approve the agenda was made as quorum requirements were not met.

F.4 Approval of minutes – Louisville KY meeting

Could not be approved as quorum requirements were not met.

F.5 Status of C57.13 Standards Thomas briefly presented the status of the various standards handled by the ITSC:

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The PAR was approved for the revision of C57.13.2 in December 2017. Work on this standard officially began at this meeting. Thomas Sizemore is the chair for this revision.

F.6 Working Group Reports

F.6.1 WG on Station Service Voltage Transformers - D Wallace The meeting of the C57.13.8 Working Group met at 8:00 AM as convened by Chair David Wallace. Roster sheets were circulated for attendees to sign in. A total of 34 people were in attendance with 16 members and 18 guests. 16 out of 29 members were present, therefore quorum was met. 3 guest requested membership. The agenda was presented. Pierre Riffon made a motion to accept the agenda and Rudy Ogajanov seconded the motion. The agenda was accepted with no objection. The Patent Claims Statement was presented to the workgroup with no claims being identified. The minutes from the New Orleans meeting were presented. Patrick Rock made a motion to accept the minutes and Igor Ziger seconded the motion. The minutes were accepted by unanimous agreement.

In old business: Clause 4.4.1.1, 8.3.10, 8.4.3, and 8.4.7.6 were accepted as per the changes requested in the returned comments. In clause 8.4.5 it was agreed to use NEMA 107-2016 as the reference document replacing NEMA CC-1. In Clause 8.4.3 It was agreed to use the lightning impulse clause in C57.13.5. In Clause 8.4.7.6 it was agreed to remove the reference to thermally upgraded paper. In Clause 8.5.2.1 it was agreed to refer back to Clause 12.2 of C57.13.5 David will send out a survey on clause 7.3 to determine if the clause will reference C57.12.90 and what % impedance will require internal inspection, 2% or 7.5% David will reword the Short Circuit portion of Table 12 to reference C57.12.00 Time expired before all of the comments could be reviewed. If time is permitting during the Instrument Transformer Sub-committee on Wed 3/28, the WG will reconvene to try and address the remaining comments and the result of the survey.

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A motion to adjourn the meeting was offered by Rudy Ogajanov and seconded by Thomas Sizemore. The motion carried unanimously without discussion. The C57.13.8 Working Group reconvened during the Instrument Transformer Sub-committee meeting. Attendance was checked and 16 members were present, therefore quorum was met. The remaining comments from the 3/27/18 meeting were reviewed. Clause 8.5.3 – it was decided to refer to IEEE 693 in the C57.13.8 standard. In new business: The results of the survey on Clause 4.1.7.3 were presented for discussion. The committee agreed to accept the clause from Ross McTaggart with the additions proposed by Pierre Riffon. Discussion was held on the removal of the first sentence from the clause. Zolton Roman made the motion and Patrick Rock seconded it. The vote was 10 for and 1 against with 5 abstaining. The motion carried. It was also decided to change the wording on the voltage classes. David Wallace will reword the clause and insert it into Draft 5 for review and comment. David Wallace will compile Draft 5 of the standard and send it out to the committee for review and comment. If possible, a web meeting will be held before the next meeting in October to discuss the results of the review. The next meeting will be at the Fall 2018 Transformers Committee meeting in Jacksonville, Fl.

F.6.2 WG PD in Bushings & PTs/CTs PC57.160 - Thang Hochanh This working group did not meet. Invitations to join the ballot pool have been sent out.

F.6.4 Working Group on Revision of C57.13.5 "Standard of Performance and Test Requirements for Instrument Transformers of a Nominal System Voltage of 115 kV and Above.

The WG met on March 27, 2018, from 9:30 am to 10:45 am. Seventeen (17) members and eighteen (18) guests attended the meeting. Three (3) guests requested membership. The meeting was chaired by Pierre Riffon, WG chair. Mr. David Wallace was the vice-chair.

This was the fifth WG meeting.

Attendance has been recorded in the AM system.

Required quorum was met, presence of at least 16 members was required.

Annex F

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The agenda has been reviewed and was approved unanimously. The motion of approving the agenda was made by Igor Ziger and was seconded by Thomas Sizemore.

Minutes of the Louisville meeting minutes have been approved by all members present. The motion of approving the minutes of Louisville meeting was made by Robert Middleton and was seconded by Thomas Sizemore.

Call for patents has been made and no essential patent claims have been reported.

The first item of business, was related to the survey made on the temperature rise test methodology for current transformers. The results showed that we did not get consensus on the actual edition methodology. A new proposal has been made by the Chair, this proposal is inspired from IEC 61869-1 and IEC 61869-2 wording but an exception has been made to gas-insulated current transformers rated 550 kV and above. In addition, the minimum duration of the temperature rise test has been decreased from 5 times the thermal time constant to 3 times the thermal time constant.

Dry-type current transformers rated 550 kV and above will be added with the same criteria as oil-filled current transformers.

A motion to approve the revised Chair proposal as amended during the meeting was made by Zoltan Roman and was seconded by Igor Ziger. The Chair revised proposal has been approved unanimously. The agreed wording will be part of next Draft 1.6.

The second item of business was related to the comments received on Draft 1.5. Among the subjects discussed, the following additions of modifications will be made to Draft 1.5:

• A reference to IEEE Std. 4 will be made; • Maximum system voltages will be aligned with C57.13;

• The wording regarding background noise during partial discharge test will be the same as used in C57.13. Moreover, if IEEE C57.160 is adopted before the publication of the new edition of IEEE C57.13.5, then the reference will be changed from IEC 60270 to IEEE C57.160;

• "Pd intensity" will be change for "Pd level";

• TPS class called in Annex D will be deleted. D1.6 will be issued before the next meeting, this will be the last round of comments within the WG and SC membership. It is planned to request from the Subcommittee an approval for Sponsor Ballot at the upcoming meeting in Jacksonville, Florida.

As a new business, the internal arc test procedure has been discussed. The description of the fuse wire location may need to be improved. Igor Ziger will make a proposal as soon as possible. In addition, an additional rated current for the arc protection classification will be added. This rated arc protection current may equal to or lower than the rated short-circuit withstand current. This rated value will need to be added to the nameplate.

Annex F

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Zoltan Roman made a motion to add informative wording in Annex D in order to recommend the use of polymeric insulators when an arc proof protection class is specified. His motion was seconded by Igor Ziger. The motion was accepted unanimously.

The meeting adjourned at 10:30 am on March 27, 2018. The adjournment motion was made by Robert Middleton and was seconded by Arnaud Martig. The motion was approved unanimously.

The next meeting is planned to be held in Jacksonville, Florida, USA, on October 16, 2018.

F.6.5 C57.13.9 Working Group for PLC Capacitors and CCVT’s – Zoltan Roman Zoltan Roman started the meeting as Chair with Mike Craven as Secretary. Introductions were made. This is the third meeting as a Working Group. There were 32 attendees including 11 members and one request for membership. 13 members were needed and since there was not a quorum, no business was voted on. Memberships will be re-evaluated after this meeting. The patent notice was made and there were no patent claims by attendees. Zoltan reviewed Survey 1 and the 8 responses. An objective is to harmonize with the IEC and CSA as much as possible. There were discussions for and against the offered voltage changes: -Arnaud Martig explained the Trench opinion that the higher voltages requirements are preferred due to the higher frequency duties of CCVTs. -Zoltan’s opinion is that the BIL requirement insures that capability. -A user comment supported the higher voltage because of the uncertainties of aging and capacitor characteristics. -A user comment that existing standards have worked for 345 and 765 units in service in his experience. The survey will be transmitted again with additional items. Zoltan moved on to the next agenda item and his many proposed edits as Draft 3. As before red text in Draft 3 is material not yet reviewed. -Added Figure 1 schematic diagram to illustrate the definition of the EMU. -Added section 6.2 capacitance and dissipation factor of the stack and noted the ambient temperature specification is important.

Annex F

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-Table 7 now has corrected pd extinction voltage values per C57.13. Further question whether to use 13.5 or IEC values instead, so the proposed values will be Question 2 added to the next survey. -Table 8 range of C was changed to 100 nF. There was a good bit of participation and discussion about Section 6.4 and whether the EMU could be disconnected during test. Considerations were: -EMU can be tested as a separate physical unit -12 to 20 kV rating of EMU does not require pd test -Manufacturer does not want to have to build the whole unit in order to test EMU -May push the test capabilities of the manufacturers -And note that it would be a routine test The issue of disconnecting the EMU for CCVT pd testing is Question 3 of the next Survey. In Section 6.5 RIV Table 9 was added as no RIV requirements are in 13.5. Some discussion about the need for 72.5 kV and below specification and Igor said not using would harmonize with 13.5 and IEC. Section 6.6.2 was added with the intent that primary transients are not transmitted to the low voltage side. 6.7.2 is where the review of Draft 2 ended, but needs further review. Moving on to new items the review of the Draft 3 continued: -7.1.1 is from the line tuner standard for CCVTs as is the new table just above Table 10. -Table 10 has burdens Q and T added. Burdens W through ZZ are the same. There were no comments. Last topic touched was ferroresonance requirements. Date and place of the next meeting will be the Transformers Committee Meeting in Jacksonville Florida. Adjournment was at 12:15. F.6.6 C57.13.2 Working Group for Conformance Test Procedures – Thomas Sizemore Attendees: 30 people attended and 19 requested membership. Rosters: An initial roster was circulated for members and guests. Essential Patent Claims: Text was displayed and the Chair inquired as to if anyone knew of essential patent claims. None were brought up. Minutes: Initial meeting thus no minutes needed to be approved.

Annex F

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PAR Approval: The PAR was approved in December 2017. This was the first official meeting. Review of the current version of the standard: Based on the meeting that took place in Louisville prior to the PAR being approved the points below were focused on during this meeting. In Louisville the entire standard was reviewed to find the main points of discussion and to identify a number of small technical or editorial issues.

- Section 7.5 was discussed concerning if the section should be removed or not. Zoltan Roman made motion to reference C57.13 Rudy Ogajanov seconded this motion. Unanimous approval was given by those in attendance.

- Section 8 was regarding insulation system acceptance was discussed. Igor Ziger is to review wording and perhaps propose next text. Thomas Sizemore is to review the referenced ANSI/UL 1446 document. Once text changes are worked on between Igor and Thomas as survey will be sent out for comment.

- Section 9 which covers production monitoring was discussed. Huan Dinh suggested the addition of partial discharge as a required test to this section. Igor Ziger made a motion and Arnaud Martig provided a second to add PD in this section. This was unanimously accepted by the attendees.

- Section 9 was also discussed with respect to third party monitoring (by UL, CSA inspectors, etc.) was discussed but no conclusion was reached to make a change to this item. More discussion may take place in the future to clarify this language.

- Motion to adjourn: A motion was put forth by Rudy Ogajanov and was seconded by Scott McClosky. Next Meeting: This WG will meet to continue work at the Fall 2018 meeting in Jacksonville, Florida. Next version of draft: A new draft is being prepared to update based on comments. It will be issue between meetings with a request for comments.

F.7 New Business

Survey Results on Group 4B Transformers: Thomas Sizemore presented the results of the survey on group 4B transformers. This covered three points. First, how to clearly mark the nameplates for these requirements. Second, do accuracy requirement apply at both the 58% and full accuracy voltage level. Finally, is partial discharge test voltage to be defined by the normal operating voltage or the full accuracy voltage level typically seen in fault or emergency conditions.

Annex F

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Task Force on Accuracy Requirements If a quorum had been met than discussions and actions to initiate a Task Force to review accuracy requirements would have begun. This topic was not advanced at this time. It may be addressed at the next meeting.

F.8 ITSC Adjournment The meeting concluded after a motion to adjourn by Scott McClosky and seconding of this motion by Pat Rock.

The next meeting will be at the Fall 2018 Transformers Committee meeting in Jacksonville, FLA

Annex G Insulating Fluids Subcommittee

March 28, 2018Pittsburgh, PA

Chair: David WallachVice-Chair: Jerry MurphySecretary: C. Patrick McShane

G.1 Introductions, Roll Call of Members for Quorum, Meeting Agenda Approval, S13Minutes Approval, and Chair’s Comments

G.1.1 Chair’s Opening Remarks:

a. Reminded that the AMS must be used for Working Group and Task Forcerosters.

b. Reminded that the WG and TF meeting minutes are due for submittal to the SCIFSecretary within 15 days of their meetings. The target date for SCIF S18Minutes is April 6, 2018.

c. Announced that no recordings of the meeting is permitted.

d. Called for patent disclosures. There were none disclosed.

G.1.2 Roll Call of SC members: (Quorum requirement: 28 minimum)

a. 43 Members signed in. Quorum was achieved. Six new SCIF Members werepresent and welcomed to the SCIF: Stuart Chambers, John Foschia, BrianMcBride, Dwight Parkinson, Mickel Saad, Michael Thibault.

b. 55 Guests attended, of which 8 requested or re-requested membership: JoseAntonio Gonzalez Ceballos, Toby Johnson, Kurt Kaineder, Rakesh Rathi, ScottReed, Diego Robalino, Pugazhenthi Selvaraj, Jeff Valmus.

G.1.3 Agenda Approval:

a. The motion from Kent Mueller and seconded by Don Platts was approvedunanimously, without objection.

G.1.4 Approval of minutes from the F17 meeting in Louisville, KY:

a. The motion to approve was made by George Forrest and seconded by StephanieDenzer. The motion was approved unanimously without objection.

G.1.5 Chair’s review of key SCIF Standards:a. C57.104, Guide for DGA of mineral oil insulating liquid, PAR expires on

December 31, 2019, but the current Guide will expire at the end of 2018.

b. C57.146. Guide for DGA of Silicone insulating liquid will expire, and there is noactive TF or WG working on its revision. The Chair requested if there is anyinterest in continuing the Guide. to let him know.

G.2 WG & TF Reports Presented at the SC Meeting

G.2.1.1 C57.104 – IEEE Guide for the Interpretation of Gases Generated in Oil –Immersed Transformer (PAR Expiration: 12/31/19)

WG Chair - Claude Beauchemin

The report of the WG Meeting was presented at the SCIF meeting by ClaudeBeauchemin.

a. The WG 120 attended 49 members had quorum. 12 requested membership.Discussed the current ballot process. The WG voted unanimously to accept thechanges, to finish the remaining work and go to ballot process. 184 haveentered formal ballot pool.

b. No comments or questions were raised.

See Appendix I for the Minutes (unapproved) of C57.104 WG Meeting asSubmitted.

G.2.1.2 IEEE C57.147 Guide for Acceptance and Maintenance of Natural EsterFluids in Transformers (PAR Expiration: 12/31/18)

WG Chair: Patrick McShane, Vice-Chair: Clair Claiborne, Secretary: Jim Graham

The WG Report at the Sub-Committee Meeting: Presented by PatrickMcShane:

a. No WG Meeting was held at S18. Immediately after the F17 meeting, the ballotresolution group completed the ballot comments resolution, resulting in Draft 5.The recirculation vote was very successful. Draft 5 was formally approved byREVCOM in February. The IEEE SA editorial staff is preparing the StandardGuide for publication in the near future.

b. No comments or question were raised.

G.2.1.3 IEEE C57.166 Consolidation of Insulating Liquids Guides (PARExpiration: Dec 2022)

Chair: Tom Prevost, Vice Chair: Scott Reed

The TF Report given at the Sub-Committee Meeting by Scott Reed:

a. The WG held its kick off meeting, with 91 attendees. The WG “grandfathered”the TF Members to WG Members. Six Task Forces s were formed to helpdevelop the 1st draft. Leaders were selected for each TF. Patrick McShane

asked for a clarification of “as received”, assuming it meant “as received in newequipment”. At F17, the Chair, Tom Prevost, confirmed that change andwelcome additional input from the SC attendees. But the wording shown at theS18 meeting was unchanged. There was significant discussion, with the generalconsensus to have just two acceptance value tables: 1. As Received from theSupplier. 2. As Received in New Equipment or After Filling.

See Appendix II for the S18 Minutes (unapproved) of TF Consolidation ofInsulating Liquid Guides as submitted.

G.3 Old Business

None was presented.

G.4 New Business

a. An issue involving insulating liquids for factory testing of transformers came upat the F17 Performance Characteristics Subcommittee meeting. The issueregarded factory transformer testing with a different insulating liquid type thanwhat will be used in the field. PCS formed a TF, PSC Task Force on Filling withAlternate Fluids, to make a recommendation. The TF met on Tuesday morning.

b. At the WG for consolidation of Guides for insulating liquids, the issue of theterms “new” vs. “unused” insulating liquid was raised by Patrick McShane. Henoted that during the voting for the revision of C57.147, negative ballots werereceived regarding the use of the term “new”, which has been replaced by ASTMwith the term “unused”. The BRC agreed and the change was accepted in theballoting of C57.147. Comment by ? recommended to stay consistent withASTM. Jim Thompson mentioned some prefer the term “new”. Jimmy Rascostated that there is no ASTM definition for “new”, but there is an definition for“unused”. Luis Cheim stated that “unused” still has to meet minimumrequirements. David Wallach stated that the SC officers will investigate the issuefor discussion at the next SCIF meeting. They will look at C57.12.80.

c. The Chair announced that Patrick McShane is “retiring” from the TransformerCommittee, including the SCIF. Starting at the F18 meeting, Scott Reed willbecome the new SCIF Secretary.

G.5 Next SCIF Meeting:October 17, 2018 – Jacksonville,

G.6 Adjournment

The motion passed unanimously.

Respectively Submitted, Patrick McShane, Secretary SCIF

Unapproved Minutes from the F17 SCIF WG and TF Meetings

Appendix I – WG C57.104 Minutes

IEEE Guide for the Interpretation of Gases Generated in Oil –Immersed Transformers

Tuesday, March 27, 2018

Pittsburgh, PA, USA

Minutes of WG Meeting

The meeting was called to order at 3:20pm by Chair Claude Beauchemin.Vice-Chairs Don Platts and Norm Field, and Secretary Susan McNelly (writerof Minutes) were also present.

There were 120 total in attendance. Of these 49 of 75 members were present.A membership quorum was achieved. There were 71 guests, and 12 of thoserequested membership. The WG plans to meet at the Fall 2018 TransformersCommittee Meeting in Jacksonville, Florida.

The following is a list of the working group members. Those with an asteriskwere in attendance at the meeting.

Antosz, Stephen

Antweiler, James

Attard, Jason

Banovic, Mladen

Bazemore, Brian

Beauchemin, Claude *

Blaszczyk, Piotr

Boettger, William *

Bolar, Sanket

Boman, Paul *

Brauer, Stephan*

Bray, Elizabeth

Brett, John

Campbell, James

Castellanos, Juan *

Chakraborty, Arup

Cheatham, Jonathan *

Cheema, MuhammadAli Masood

Cheim, Luiz *

Christodoulou, Larry *

Claiborne, C. Clair *

Cox, Paul *

Crotty, John

Cyr, Marc

Damico, Frank *

Davydov, Valery

Denzer, Stephanie *

Diaz, Rodolfo

Digby, Scott

Dolloff, Paul

Dorris, Don *

Dorsten, James

Doyle, Lee

Dukarm, James *

Duval, Michel *

Elliott, Joshua

Faherty, Joseph

Fairris, James

Fallon, Donald

Fenton, Roger

Ferreira, Marcos *

Field, Norman *

Forrest, George *

Frimpong, George *

Garcia, Eduardo

Gardner, James *

Gaytan, Carlos

Graham, James

Hayes, Roger *

Ho, Calvin

Hochanh, Thang

Jacob, Fredi

Jakob, Karl

John, John *

Johnson, Toby

Kennedy, Gael

Kiparizoski, Zan *

Kirchenmayer, Egon

Kittrell, Brad

Lau, Mike *

Livingston, Kerry

Macias, Alejandro

Mani, Kumar *

Martin, Terence *

McNelly, Susan *

Meton, Therence

Minhaz, Rashed

Minikel, Justin

Moleski, Hali *

Montpool, Rhea

Morakinyo, Paul

Morales-Cruz, Emilio *

Murray, David

Mushill, Paul *

Nims, Joe *

Nunez, Arturo *

Parkinson, Dwight

Patel, Poorvi *

Patel, Sanjay

Pellon, Verena

Perjanik, Nicholas *

Pinon, Oscar *

Plath, Cornelius

Platts, Donald *

Rasco, Jimmy *

Rasor, Bob *

Reed, Scott *

Rhodes, Tom

Riordan, Kevin

Robalino, Diego

Rosenstein, Adam

Saad, Mickel

Schaffer, Paul

Schrom, Wesley

Selvaraj, Pugazhenthi *

Shem-Tov, Mark

Simonelli, Richard *

Simonov, Igor

Som, Sanjib

Spiewak, Erin

Stem, Gregory

Su, Roy

Sullivan, Kevin *

Tanaka, Troy

Thompson, Jim *

Thompson, Robert *

Thompson, Ryan

Tostrud, Mark

VanderWalt, Alwyn *

Veillette, Michel *

Vir, Dharam

Wallach, David *

Wang, Evanne *

Webb, Matthew

Welch, Lee

Weyer, Daniel

Whitehead, William

Woods, Deanna *

Wright, Jeffrey

Zhang, Jim

The following guests requested membership. Those with an asterisk will beaccepted based on attendance to a minimum of two consecutive meetings:

Chakraborty, Arup

Cheema, Muhammad *

Dolloff, Paul *

Doyle, Lee *

Fairris, James *

Fenton, Roger *

Hochanh, Thang *

Murray, David *

Saad, Mickel *

Shem-Tov, Mark *

Som, Sanjib *

Weyer, Daniel *

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Agenda1. Welcome & Introductions2. Patent Call3. Quorum Check4. Approval of Agenda5. Approval of Minutes from Fall 2017 Louisville meeting.6. Guide Status7. Changes to Guide since last meeting8. Example analysis using the Guide with real data9. New Business10. Adjourn

A call for essential patent claims was made. No patents were identified. It wasmentioned that a patent response had been made at the previous meeting.

A motion to approve the Spring 2018 Pittsburgh Agenda was made by Deanna Woodsand seconded by Kumar Mani. There were no objections or additions to the agenda.

A motion to approve the Fall 207 Louisville Meeting Minutes was made by GeorgeForrest and seconded by Clair Claiborne. There were no objections or additions to theminutes.

Introductions of the Chair Claude Beauchemin, Vice-Chair Don Platts, Vice-Chair NormField, and Secretary Susan McNelly were made.

Ballot Draft 4.3 – Revisions since Draft 4.1 approved at Fall 2017 WG meeting:

Guide Status

· Ballot pool call issued in December and Ballot pool constituted (184participants).

· Draft updated with fall meeting recommendations.oMore draft clean-up and clarifications performed, as per mandate of fall

meeting.oModifications more extensive than expectedoDraft 4.2 sent for Mandatory Editorial Review on February 6, 2018oMore editing performed to meet IEEE template (e.g. black and white

figures…).oDraft 4.3 distributed to working group on March 5, 2018oMER comments received on March 9, 2018

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· Next Stepso Ballot Process§ Next step is to complete the draft including MER suggested changes and

any changes approved today.§ Send updated draft to all members of the ballot pool for ballot§ Collect and consolidate ballot comments§ The comment resolution group (CRG) will review every comment.§ It will make appropriate changes to draft based on collected comments

review and will recirculate updated draft, with comments, to Ballot poolfor approval of changes (Re-ballot)

§ Claude reviewed the ballot process, methods of making comments andthe requirements to address all comments.

· Significant changes since Draft 4.1oMost significant changes are in clause 5 and 6o Essentially clarification of context and procedures and some content moved to

streamline clause 6.

o In clause 5.4 (p31):

Add a comment concerning the expected number of Status 2 and 3 for smallDGA set:

“It should be noted that this will be true for a large set of DGA results havingthe same general characteristics as the set used to obtain the norms used inthis guide. For smaller sets (for example from a single station), or for notablydifferent DGA populations, a different proportion of selected DGA could beobtained.”

o In clause 5.4 (p31):

Add a clarification on the influence of age and O2/N2 on norms:

“One finding from the analysis of the DGA results is that certain parameters,most notably the ratio of O2/N2 and the transformer age, have a largeinfluence on the typical levels of gases, deltas and rates, while others did not.Consequently, Tables 1 to 4 included these sub categories as necessary.”

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oNew clause 6.1:

Clause was regrouped and emphasized warnings on DGA limitations and ondefinition of status. The new clause was reviewed.

oClause 6.1.1 (p33) and Figure 2 (p34-35)

The above have been updated to clarify the description of the process.Several rephrasing, relocation of text and additions made to avoidambiguities.

Note: last 2 steps of 6.1.1 (p37) should have been marked in red in theredlined draft 4.3 as they have been added:

Updated Figure 2 (p35)

DGA Start-Up ProgramCompleted and

Routine DGA Program Started

DGAPerformed

Compute Delta ValueUpdate Rate Evaluation

All Gases < Table 1AND

All Deltas < Table 3AND

All Rates < Table 4

DGA Status 2

IncreasedT ransformer Surveillanceand DGA Frequency

DGA Status 1

Continue Routine DGA andNormal Transformer Operation

DGA Status 3

Perform Fault Identification andTransformer assesment

Take appropriate Action basedon Transformer assessment results

and company policy

Yes

Yes

No

NoAny Gas > Table 2OR

Any Rates > Table 4

o Page 37

Step 7: For DGA in status 3, gas evolution should be monitored for asignificant period of time. If during that period of time there is no significanttrend observed, then a lower DGA status could be considered, afterconsultation with a DGA expert, refer to 6.1.2.3.

Step 8: For extreme DGA results, consult a DGA expert (refer to 6.1.2.4)

o 6.1.2.3 DGA Status 3 (p38)

“If after complete review of the available information, the transformercondition is deemed acceptable for continuous operation, then it is suggestedto simply maintain surveillance typical of a lower DGA status. An exampleof this would be a transformer having a DGA Status 3 due only to gaslevels exceeding the values in Table 2 (especially if the only high levelsare for carbon oxides) when several samples taken over a year or moreindicate no sign of active gassing (all samples below Table 3 and Table4).”

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oUpdated Table 4 (p41)

o 6.1.4 Impact of DGA limitations (p41)

Most of the clause content moved and integrated into Annex B.1 (p57-58), asit is more a tutorial than a procedure.

o 6.2.3 Duval Triangle 1 (p46-47)

Computation and Figure 4 moved to Annex D.4 (p67-68) as it is more part ofa method description than an interpretation procedure.

o In Annex A (p51), new figure “Distribution of DGA in function of transformerrating

0

50000

100000

150000

200000

250000

300000

0-1 1-5 5-10 10-25 25-50 50-100 100-250 250-1000

DGA

Popu

lati

on

MVA

oAnnex F (p85-86): Update and addition of NEIpaper

NEIpaper = (101.4[CO] + 30.2[CO2]) / 22400

“NEI” designated “NEIoil”

oAnnex H Bibliography (p96-102)

References placed in alphabetical order by first author

Claude indicated that we need to approve the changes and hopefully move forward toballot.

George Forrest made a motion to approve the new draft 4.3 and was seconded by PaulBoman.

Discussion:

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Jim Thompson asked if there were changes to Tables 1 & 2 and Table 3. He asked ifthere was a duration. Claude indicated that Table 3 is not based on a time period butstrictly on the difference between two consecutive DGA results, which reflects normalDGA result variations between tests. He indicated that Table 4 is the table with a timefactor and is based on several points over time, not just two samples.

Jim had a follow-up question about Table 3, if it is 40ppm for one day or for 100 days,that is a significant difference. He asked if there shouldn’t be some ppm value oversome time frame. Claude responded that this would be covered under Table 4.

The µL/L/year was inadvertently removed from the Table 4 headers and will be addedback.

Jim indicated you would have to wait 4 to 5 months to get a discernable change usingTable 4. Claude agreed that this was true. Claude indicated that if you sampled morefrequently (e.g. once per month), you would need a minimum of 3-4 samples(including the ones already taken) to determine the slope. Claude encouraged Jim tolook at Annex B1 for a complete explanation for the multi-point process.

Jim asked for whether there is guidance on troubleshooting in a much shorter timeperiod. Claude indicated that the Guide does not provide an investigation proceduredue to the many variations and possibilities (each case being unique) and refers users toseek expert opinions.

Claude indicated that the Guide does not say you have to wait 4 months to take anothersample.

Response by Claude Beauchemin

The motion was unanimously approved.

Claude indicated the last minor editorial corrections would be made and it would besent out for ballot.

Don indicated that we will need volunteers for a ballot resolution group. Technicalresolutions determined by this group will be brought back to the WG for approval.

Don Dorris, Marcos Ferreira, Arturo Nunez, Kumar Mani, Muhammad Ali MasoodCheema, Paul Boman, and the WG officers will make up the ballot resolution group.

Discussion of examples did not occur due to lack of time, but will be posted forinformational purposes.

Marco Ferreira made a motion to adjourn, which was seconded by Nick Perjanik. Themotion was unanimous.

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The meeting was adjourned at 4:30PM

Claude BeaucheminWG Chair

Don PlattsWG Vice-Chair

Norm FieldWG Vice-Chair

Susan McNellyWG Secretary

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Unapproved Minutes from the S18 SCIF WG and TF meetings

Appendix II

Working Group for Acceptance and Maintenance of InsultingLiquids

Monday, March 26, 20189:30 – 10:45 AM

CL(A)Pittsburgh, PA

Chairman Tom Prevost(absent)Vice Chair Scott Reed

The meeting was called to order at 9:35 am by Vice Chair Scott Reed.

There were 22 of 43 members present. There were 19 guests and 29 visitors. A membership quorumwas achieved.

Agenda1) Introductions2) No Quorum Necessary3) Approval of Agenda4) No Approval of TF Fall 2017 Minutes Necessary5) Call for Patents6) Status of PAR7) New Document:

a. Titleb. Scopec. Purpose

8) Presentation and discussion of document format9) Establishment of Task Forces10) Task Force Objectives11) New Business12) Adjourn

Due to the time constraints, attendees did not introduce themselves.

There was unanimous approval of the Agenda.

Vice Chairman Reed posted the Patent Claim. No claims were made.

Since this was the first Working Group meeting, there were no previous meeting minutes to approve.

Vice Chair’s Remarks:

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Vice Chairman Reed announced the PAR was approved and expires December 31, 2022. Because it wasthe first meeting, Reed shared that active members from the Task Force were left as members and theguest who attended the last meeting were given membership status.

Next, the title, scope and purpose were reviewed. Jim Thompson asked if this guide would consolidateC57.637 and Vice Chair Reed said no. Next, the Vice Chair reviewed the six task forces that were createdand which sections are covered by the task force. The Task Force Chairs that were present spoke abouttheir respective Task Forces and identified who has already to volunteer:

TF1: Types of Insulating Liquids—led by Jinesh Malde with Attila Gyore, Jayme Nunes, Alan Sbravati,David Sundin, Suh Joon Han and Andy Holder

TF2: In Service—led by Scott Reed with James Gardner, Dominique Bolliger, Bob Rasor, Rick Cantrell andStu Chambers

TF3: Mixture of Insulating Liquids—led by Clair Claiborne with Hali MoleskiTF4: Maintenance of Insulating Liquids—led by Rich Simonelli with Greg Steves and Scott ReedTF5: Insulating Liquids for LTCs—led by Rainer Frotscher with Dave Hanson, Luiz Cheim, Paul Bowmanand Mike LauTF6: Editorial—Not Assigned but Toby Johnson volunteered to contribute

Patrick McShane questioned whether De-Energized Tap Changers (DETC) should be included as part ofLTC’s. Luiz Cheim opined that a DETC is not its own compartment and therefore would not need to becovered. It was agreed that the focus is on the insulating liquid values and not application issues.

A question was asked where Voltage Regulators will be covered. It was mentioned perhaps under theLTC section.

Next, it was questioned by Patrick McShane why ‘New’ Liquids is broken into three sections: 1. AsSuppled, 2. As received, 3. After Filling. After reviewing C57.106 and confirming that C57.147 mirroredC57.106, the group felt it would be better to have it divided in just two sections: New Insulating Liquidsas Received from the Supplier and New Insulating Liquids Received in New Equipment or After Filling.

Patrick McShane questioned whether it should be worded as ‘New’ Insulating Liquids or ‘Unused’Insulating Liquids. He referenced that ASTM D3487-16 had switch standard for mineral oil insulatingliquid from ‘New’ to ‘Unused.’ Claire Claiborne later clarified that a new ASTM standard used ‘New.’The working group was asked to consider how it should phrased and we could review in Jacksonville.

Finally, the Vice Chair outlined the Task Force objectives for the next meeting:

-Organize Task Force Committees-Define Scope and Content of each Task Force-Establish a Work Schedule-Assemble Applicable Content from other Standards-Determine New Content that should be included as part of the Task Force (i.e. Use of Natural Esters at 800 kV)-Have the Framework Ready and Present Update at the Jacksonville, FL Meeting

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No New Business was discussed and the meeting was adjourned at 10:38 am.

Page 1 of 13

Insulation Life Subcommittee

March 28, 2018William Penn Omni Hotel, Pittsburgh, PA, USA

Chair: Sheldon KennedyVice-Chair: Barry BeasterSecretary: Sam Sharpless

The Insulation Life Subcommittee was called to order by the Chair in Pittsburgh, PA on March 28, 2018at 8:00 AM. Due to the size of the group, general introductions were not made. The Chair requested thateach person state their name and affiliation when addressing the subcommittee.

H.1 Chair’s Report/Remarks

The chair provided the dates of upcoming Transformer Committee meetings as follows;

2018 Fall Meeting; October 14-18, 2018, Jacksonville, Florida, USA

2019 Spring Meeting; TBD

The Chair requested that any person with knowledge of a patent essential to meet the requirements of anysubcommittee standard to bring the issue forward for discussion. No one responded to this request.

The Chair requested the following items be included in all activity group minutes;

- The name of the activity

- The date and time of the meeting

- The number of members and guests in attendance. Full attendance should be recorded in the AMSsystem

- The presence or absence of a quorum

- Any essential patent issues raised during the meeting.

- A summary of discussion. Intricate detail not required. Use a separate document to explaindecisions that are made.

- A record of the decisions made in the meeting

- If there will be another meeting. If so, state the time and place.

- Submit minutes as soon as possible, but no more than 15 days after the meeting.

The Chair reminded everyone that working groups must achieve a two-thirds majority to submit adocument for Sponsor Ballot. The subcommittee must achieve a simple majority to submit a documentfor Sponsor Ballot.

Annex H

Page 2 of 13

The Chair discussed the membership requirements and recognized the following new members; JasonAttard, Kevin Biggie, Roger Fenton, Gael Kennedy, Neil Kranich, Kumar Mani, Shankar Nambi,Anastasia O'Malley, and Peter Zhao.

The Chair discussed the requirements for continued membership and stated that the following membershad been moved to guest status due to lack of attendance; Steve Brinkman, Eric Davis, Andre Shor,Hamid Sharifnia, Bill Chiu, Michael Barnes, Wayne Johnson, Mario Locarno, and Eduardo Robles.

The Chair noted that the following guest had been removed from subcommittee rolls by request; KeithEllis.

H.2 Secretary’s Report

The Secretary reported that according to the electronic check-in system, 69 of 114 members were presentat the start of the meeting and that a quorum had thus been achieved.

The Fall 2017 subcommittee meeting minutes had been provided to participants in advance of the meetingfor review. Phil McClure made a motion to approve the minutes and the motion was seconded by DonHoffman. Hearing no objections or abstentions, the motion carried by acclamation.

The Spring 2018 subcommittee meeting agenda was provided to participants in advance of the meetingfor review and they were also presented on a screen at the meeting. Marcos Ferreira made a motion toapprove the agenda and the motion was seconded by Arup Chakraborty. Hearing no objections orabstentions, the motion carried by acclamation.

Consolidation of the final electronic check-in records and written attendance rosters after the meetingindicated that 85 total members and 125 guests were present at the meeting.

Five guests requested membership via the membership roster and all met the membership criterion;Stuart Chambers, Everton De Oliveira, Pugazhenthi Selvaraj, Robert Stinson, and Janusz Szczechowski.

H.3 Project Status Reports. The Chair reported the status of each project as follows;

C57.91 IEEE Guide for Loading Mineral-Oil-Immersed Transformers

C57.91 is valid until 2021. The Working Group Chair is David Wallach.

C57.100 IEEE Standard Test Procedure for Thermal Evaluation of Liquid-Immersed Distribution Transformers

C57.100 is valid until 2021. The Working Group Chair is Roger Wicks.

C57.119 IEEE Recommended Practice for Performing Temperature Rise Tests onOil-Immersed Power Transformers at Loads Beyond Nameplate Ratings

C57.119 is valid until 2018. The revised document is on the April 26, 2018 RevCom agenda forconsideration and approval. The Working Group Chair is Gael Kennedy.

C57.154 Design, Testing and Application of Liquid-Immersed Transformers withHigh-Temperature Insulation

C57.154 is valid until 2022. The Working Group Chair is Richard Marek.

Annex H

Page 3 of 13

C57.162 Guide for the Interpretation of Moisture Related Parameters in Dry, GasInsulated and Liquid Immersed Transformers and Reactors

C57.162 is a new document. The PAR for creating this document expires December 31, 2020. Theworking group chair is Thomas Prevost.

C57.165 IEEE Guide for Temperature Measurements for Liquid ImmersedTransformers and Reactors

C57.165 is a new standard and the PAR expires December 31, 2021. The working group Chair isPhil McClure.

1276 Guide for the Application of High Temperature Insulation Materials inLiquid-Immersed Power Transformers

1276 expires Dec 31, 2018. The PAR for revision of this document also expires December 31,2016. The working group chair for this document is Roger C. Wicks.

1538 IEEE Guide for Determination of Maximum Winding Temperature Rise inLiquid-Filled Transformer

1538 guide is valid until 2021. An amendment was approved in September 2015. A task force metat this conference to formulate a PAR for document revision. The working group chair is DonaldPlatts.

H.3.2 Working Group and Task Force Reports

Working Group on C57.162 Guide for the Interpretation of Moisture RelatedParameters in Dry, Gas Insulated and Liquid Immersed Transformers andReactors – Tom Prevost

Due to the absence of the Chair, the Vice-Chair chaired the WG meeting and reported to theSubcommittee.

The meeting was called to order on Monday 26 March 2018, at 11 am.

Attendance:Members: 48 out of 90 (quorum).Guests: 44.Guests Requesting Membership: 15 (to be verified).

The Vice-Chairman introduced the officers of the working group. The meeting agenda wasapproved. The Unapproved Minutes of the Fall 2017 meeting in Louisville were approved.

The meeting attendees were informed that a PAR extension request has been granted. The newPAR deadline is December 2020.

The status of the WG document was discussed. There are 10 Task Forces in the WG.

Annex H

Page 4 of 13

The following five TFs have submitted the first draft of their section to the WG Chair prior to themeeting: TF1 (Terminology and Definitions), TF4 (Moisture in Solids), TF5 (Dielectric ResponseMethods), TF6 (Inferring of Moisture), and TF8 (Factory Application).

A fruitful discussion on the Scope of TF2 (Moisture in Gases) has been held at the meeting. Aconfusion of what is included in the scope and what is not has been resolved.

TF3 (Moisture in Liquids) has a new Chair, who was appointed following the last meeting. Aseparate meeting of TF3 members has been held later on the day.

The position of Chair of TF7 (Evaluation of Ageing) became vacant just a few days before the WGMeeting. However, immediately after the meeting, a volunteer has expressed an interest inbecoming a new Chair of this TF.

The Chair of TF9 “Field Application of Knowledge of Moisture” presented a brief report on thedraft document of his section to the meeting.

The Chair of TF10 (Moisture Migration and Equilibrium) was absent.

The meeting was adjourned at 11:54 am.

Working Group for Application of High-Temperature Materials IEEE P-1276 –Roger Wicks

The meeting opened at 3:18 PM after quorum established with 23 members in attendance. By theend of the meeting, the total attendance was 24 members and 40 guests. 7 of the guests requestedmembership. The chair will review these requests prior to conducting working group ballot.

Introductions were made. The meeting agenda was reviewed. There was a motion to approve bySam Sharpless w/ 2nd by Mike Shannon. It was approved by the membership with no opposition.

There was a motion to approve the minutes from Louisville meeting by Bruce Forsyth w/ 2nd byTom Golner. There was no opposition to the minutes and they were approved as presented.

The Essential Patents Disclosure slide was presented. No issues where brought up relating topatents.

A Review of the Draft 2.0 document was begun to highlight the changes since the Louisvillemeeting where the membership approved removal of overlaps with C57.154. It was noted that thedocument needs to be submitted to REVCON by October 15th so balloting process needs to begin.

Sections 4, 5, 6, 7, 8, 9 as well as the additions of Annex A, B and C were reviewed.

Annex A – references to C57.100 for conducting aging

Annex B – extracted from C57.154 to address aging in natural esters as well as aging informationfrom the original IEEE 1276 guide

Annex C – from 1276 but adding dissolved gas analysis for high temperature liquids withreferences as well to natural esters and silicones

Annex H

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Bibliography – includes references to natural esters. Work needed to add other references from thedocument prior to working group ballot.

Alan Sbravati questioned removal of Annex D with loading guide information. The Chair said thathe did not think it was not appropriate for this group but that there would be additional discussionduring that part of the meeting.

Heat run information was moved to C57.154 because it is a requirement and the gasket informationis in Clause 6.

There was a discussion of the continuing need for 55 degree temperature rise.

Alan Sbravati had a concern the information being displaced from other standards could causeconfusion. The Chair requested that he include those concerns in the ballot comments so that itcan be resolved.

Sasha Levin desired more information about distribution transformers. The Chair stated that anysuggestions for new information could be provided during balloting.

The Chair stated that section 7.1 is a slight modification from original 1276. The original onlyaddressed power transformers (no distribution) and only mineral oil. The new section was updatedto include more current lifetime test requirements

The Chair noted that the loading guide information in section 9 was updated to include morecurrent information based on C57.100.

The Chair stated that there has been a proposal from the natural esters group for a proposed loadingguide. This was not included in the current revision, but rather a generic discussion was provided.The chair believes that the expertise to provide more detail best resides in the working group for therevision of IEEE C57.91.

The Chair stated that the last paragraph of P1276 was changed based on comments from the lastmeeting where a concern was expressed about developing a loading guide based on a formula wastoo simplistic.

The Chair stated that current PAR was extended to the end of the year to coincide with theexpiration of the current document.

The Chair reviewed Annex B. It gives examples of aging testing. He noted that they don’t followthe most current C57.100 standard, but they are still good examples.

Joe Foldi and Roger wicks discussed what would be needed to update the data in the guide usingthe current C57.100.

Alan Sbravati noted that Annex A looks like C57.100. The chair stated that this data was movedfrom C57.100 because it was more tutorial in nature.

In order to stay on schedule, the Chair proposed a working group ballot with a 15 day responsewindow. He noted that a Ballot Resolution Committee is already established and that they wouldtry to resolve issues by end of April.

Annex H

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Patrick McShane expressed concern that many unilateral changes were made in the currentrevision. The Chair stated that he had not received much input from the membership, butencouraged members to make comments during ballot resolution as needed. Bruce Forsyth agreedthat many changes were unilateral, but felt that the recirculating the ballot for comment andapproval would resolve the issue.

Alan Sbravati stated that he would like to see coordination with the other 3 standards. The Chairrequested that he comment during ballot so that it can be resolved through BRC.

The Chair summarized the discussion and noted that there were a number of comments as describedin the notes of the document review. He stated that these comments should be reaffirmed as issueswith proposed solutions during the working group ballot phase.

The chair proposed a ballot consistent with the agreement from the fall 2017 meeting, noting thiscould happen soon with a 15 day window for voting.

There was a motion to adjourn by Sam Sharpless, 2nd by Dave Stankes. The motion passed and themeeting adjourned at 4:34 PM.

In discussions after the meeting it was agreed to wait a week or two to start the ballot so thatmembers and guests can have the time to read the document and the Chair can finalize the draft(finish bibliography, perhaps reformat some of the tables, etc.). A likely start date for the ballotwill be the first or second week of April with an end of April completion.

C57.119 IEEE Recommended Practice for Performing Temperature Rise Tests onOil-Immersed Power Transformers at Loads Beyond Nameplate Ratings – GaelKennedy

The document has been submitted to RevCom. Nothing further to report.

C57.91 IEEE Guide for Loading Mineral-Oil-Immersed Transformers – DavidWallach

The working group met at 4:45 PM on March 27, 2018. 24 of 52 members were present at thebeginning of the meeting with a total attendance of 67.

The minutes of the previous meeting were presented. Bob Tompson made a motion for approval, itwas seconded by Terry Martin. There were no objections, but the motion could not be officiallyapproved due to lack of a quorum.

The meeting agenda was presented and reviewed. There were no objections, but the agenda couldnot be officially approved due to lack of a quorum.

The patent slides were displayed and no patent issues were identified.

The chair noted that the PAR will expire in December of 2021.

There was great deal of discussion and it was agreed to form sub-groups for revising the guide. Theproposed subgroups are:

Annex H

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1. Distribution transformer loading. There was suggestion to request data from PhilHopkinson’s group.

2. Synchronization of guidance with C57.12.00 and other guide temperature limits. DonPlatts will take the lead. The chair agreed to request an official copy of the IEC 60076-7overloading guide through the IEEE Standards Office to compare the temperature limitswith this guide.

3. C57.91 temperature “in-contact” and “not-in-contact” limits for tables 8 and 9. DavidWallach will lead this group with help from Juan Castellano and Michael Saad. DonPlatts commented that top oil temperature is defined in C57.12.80. Juan Castellano feltthat we have equations in the guide for calculating winding hot spot but none for othermetallic parts heating.

4. Condition based risks. Juan Castellano suggested we coordinate with the bushing overloadworking group.

5. Ancillary Component loading. More guidance is needed to work on enhancements toClause 9.2.2

6. Fiber Optics to enhance overloading. Peter H, Walia, Gills M and Emilio Morales offeredto help

The meeting was adjourned.

C57.165 IEEE Guide for Temperature Measurements for Liquid ImmersedTransformers and Reactors – Phil McClure

The Chair called the meeting to order at 9:30 am and welcomed the attendees. The Chair alsowelcomed our newly appointed Vice Chair Robert Thompson and Secretary Mark Tostrud.

The patent slides were displayed and the attendees were asked if any of them were aware of anypatents that may be essential to any aspect of the work we will be doing and if so, that they mustinform at least one of the officers in order that IEEE may be notified. There were no responses tothe inquiry.

The attendees introduced themselves and the attendance rosters were circulated. There were 21members, no previous guests and 29 new guests attending. Two guests requested membership.

21 of 39 members were present and a quorum was thus achievedThe minutes from the fall 2017 meeting were circulated among the members prior to the meetingand the Chair asked for a motion to approve them. Babanna Suresh made the motion and GillesBargone seconded the motion. With no abstentions or objections the minutes were approvedunanimously.

There was no old business

New business:

- Reviewed the draft of the guide

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- Reviewed and discussed the scope of the document. There were no objections to the scope itwas written.· The Chair disclosed that a purpose statement was written into this first draft, even thoughthe PAR stated that there would not be one. It was stated that the PAR would need to berevised to add the purpose statement and was concluded that the purpose statement was not soimportant that it merited revising the PAR. The purpose statement will be removed in thenext draft.· It was asked if the definitions section that is included in the draft is needed and the groupagreed that it is.- A recommendation was made to add a definition of indirect measurements to the draft. Thatwill be done, since much of the guide will discuss indirect measurements.- A member asked if the guide covers temperature measurements in both distribution andpower transformers and the Chair answered yes.- The group discussed hot spots that are not part of the winding. Lead hot spots were ofconcern and the following comments were made:

- Leads can be one of the limiting factors- Failures have occurred due to lead defects- Language should be added to indicate to state that leads and bushings should berated above the expected current load (overrated). The response from severalmembers and the Chair was that the guide should not specify design factors. Therecould be language that describes temperature measurement methods that detecttemperatures that exceed specifications of the insulation. - Other temperature measurements that should be considered and the group made thefollowing suggestions:

- Tie plate temperature measurements- Lead measurements- CT temp measurements- Tap changer leads- Temps due to leakage flux- Tap and tie connections- Bolted connections

- Knowledge of all temperatures and hot spots is required for proper DGAinterpretation.- The types of connections depend on the type of transformer, manufacturer,materials, etc. While the connection type will influence the temperature, this is out ofscope for this guide.- The guide needs to focus on how to measure temperature and not design aspects.- The guide should not specify what type of connection to use, or which type ofconnection is best for an application, but should provide recommendations for how tomeasure these types of connections if they exist.- Manufacturer representatives present were asked if they typically measuretemperatures of leads during test?

- SW Electric; no- GE Prolec (Juan Castellanos); they are measured during a design check- Howard Industries (Zan Kiparizoski); Lead temperatures and connectionsare calculated and measured during the design process

- As a result, it was concluded that the guide should cover measurements that aremade in design and test phases, as well as in operational phases. The guide should notspecify that certain measurements should be made, but if they are made it shouldrecommend method(s) of taking measurements.

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- Optical sensors were mentioned by Gilles Bargone and he stated that there is a section onoptical sensors in Annex A.- The Chair called for volunteers to author and/or edit temperature measurement sections. Thenames of the volunteers for various subjects were listed in the minutes of the Working Group.

With no more business and time running out, the Chair asked for a motion to adjourn.- Gilles Bargone motioned for adjournment- Juan Castellanos seconded the motion- There were no objections and the meeting was adjourned.

Task Force to develop PAR for IEEE 1538 Maximum Winding Temperature Risein Liquid-Filled Transformers – Don Platts

An informational meeting held March 27, 2018 in Pittsburgh, PA. Nine members of the Insulationlife subcommittee met to discuss the existing document as published in 2000, and the amendmentthat was approved and published in 2015. Since we need to incorporate the material found in theamendment, we will need to undertake a full revision of the document.

The group discussed and confirmed the need for continuing this guide. It was noted that theportions that discuss the installation of fiberoptic probes do not include any warnings of theproblems that can arise with the installation of probes, and the errors in temperature readings thatcan result. The group also noted that references and definitions in the guide are out of date.They agreed to request that the Insulation Life Subcommittee approve the request to obtain a PARutilizing the same scope and purpose statements that appear in the present document.

If approved, a PAR request will be submitted and they will be prepared to start a WG at the nextmeeting in October.

Task force to develop PAR for revision of C57.100 IEEE Standard Test Procedurefor Thermal Evaluation of Liquid-Immersed Distribution Transformers – RogerWicks

The Chair called the meeting to order at 9:15 AM and welcomed attendees to this first meeting ofthe task force. The Chair noted members of the previous Working Group on C57.100 have beenadded as guests on the rosters. Since this was the first meeting, there was no quorum call.However, the PAR and the document was discussed to gain consensus of the attendees at themeeting.

The Chair provided information related to the Patent disclosures.

The Chair reviewed the proposed meeting agenda, which was focused on developing a title, scopeand purpose for the PAR to revise C57.100.

There were 69 total attendees at the meeting, of whom 17 requested membership, bringing thetotal number of members (once the working group is formed) to 18 (including the task forcechair).

The current title was presented for review along with a version with a proposed minormodification to be: “IEEE Standard Test Procedure for the Thermal Evaluation of Insulation

Annex H

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Systems for Liquid-Immersed Distribution, Power and Regulating Transformers” and the Chairinvited comments related to recommended changes. A question was raised regarding why thedocuments does not cover all liquid-immersed equipment. The Chair noted this would be a part offuture discussion.

After some discussion, the Chair polled the group and the consensus was to use the modified title.

The Chair presented the current scope with updates to reflect the modified title.

The Chair briefly overviewed key sections of the current document specifically related to Powerand Distribution transformers. Sasha Levin and Jin Sim provided input related to the similarity ofinsulation systems between regulating transformers and the power and distribution transformers.In specific, Sasha suggested we could survey producers of such equipment and verify if the ratioof materials were consistent with the other applications, and if so, that the tests could be used aswritten. Here is the revised scope based on the revised title:

“This standard applies to the insulation systems used in all liquid-immersed distribution, powerand regulating transformers. This standard provides test procedures to evaluate the thermal agingcharacteristics of insulation systems used in liquid-immersed distribution, power or regulatingtransformers. The dielectric liquid is part of the insulation system.”

There was consensus that the scope as written was acceptable.

The Chair presented the current purpose and opened the floor to comments. A question was askedwhether anyone uses the document for item a), which is to provide a basis for the selection of alimiting hottest-spot temperature for rating purposes.

There was a lengthy discussion regarding whether the purpose is to establish solid insulation or oiltemperature limits. Certain challenges related to establishing oil temperature limits were identifiedand one member suggested oil temperature limits should be established by other groups. Variouswording proposals were discussed.

After a lengthy discussion, the Chair polled the group for preferences of the various versions thathad been discussed to replace the existing item a), as well as to modify item b) with the disclaimerthat the life curves derived from the C57.100 test procedure are theoretical. The version with mostsupport was as follows:

The objective of this test procedure is to establish uniform methods for investigating theeffects of operating temperature on the life expectancy of liquid-immersed transformerinsulation systems. The results of these test procedures are expected to;

a) Provide the basis for the selection of material temperature limits for ratingpurposesb) Provide theoretical life curves that may serve as the basis for a guide forloadingc) Permit the comparative evaluation of a proposed insulation system withreference to an industry proven system that has been shown to be acceptable inservice

In the time remaining, the Chair presented several proposals for items that the future WorkingGroup may want to consider for revision. Some of those items are as follows:

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- Modify test methods to add regulating transformers if included in the scope of therevised document.- Consider additional testing information regarding areas of omission from pastdocument:- Enamel coated wire evaluation technique- Diamond dotted coated paper evaluation technique- Discussion on what testing would be required if have approval for one type oftransformer (distribution or power) and need to qualify for other – full evaluation or somereduced testing requirement.- Better define the scope of minor changes requiring single point testing. Currentdocument describes minor changes to industry proven system – also need method forminor changes to new systems.

Additional suggestion presented by attendees included:

- Look at the definition of industry proven system (does it need to be 180,000 hours ornot)?- Do we need to incorporate discussion on the pressure within the materials test methods(such as do we specify using pressure relief valves at what pressure)?- It was also noted that there is a CIGRE working group studying aspects of insulationthat may provide useful information to the revision of this document.

The meeting adjourned at 10:45 AM

Task force to develop PAR for revision of C57.154 Design, Testing andApplication of Liquid-Immersed Transformers with High-Temperature Insulation– Richard Marek

The meeting was called to order at 4:45PM by Chair Richard Marek. Vice-Chair AnastasiaO’Malley and Secretary Ewald Schweiger were also present. The Chair stated that since this is thefirst meeting of the TF, anyone requesting membership on the initial roster will be accepted as aWG Member. 42 of the total 90 attendees on the paper roster requested membership. 91 attendeessigned in on the RFID attendance system.

Introductions of the Chair, Vice Chair, and Secretary were made. Attendees were asked tointroduce themselves and indicate their affiliations when making comments or asking questions.

The Chair stated that the main purpose of the TF was to define the scope and purpose so that a PARcould be submitted. He gave a brief history of the standard, noting that there is a parallel IECstandard. The standard was published in 2012 and a revision is due by the end of 2022.

The chair presented a proposed document scope as follows; “This standard applies to all liquid-immersed distribution, power, and regulating transformers that are designed to operate attemperatures that exceed the normal thermal limits of IEEE Std C57.12.00 under continuous load,in the designed average ambient, and at rated conditions.” Initially a suggestion was made to addreactors to the scope, but it was decided that the document could be used for a reactor even if theywere not specifically included in the scope. After somed discussion, the following scope wasagreed upon; “This standard applies to all liquid-immersed transformers that are designed to operateat a temperature rise that exceeds the limits of IEEE Standard C57.12.00 under continuous load, inthe designed average ambient, and at rated conditions.”

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The chair presented the proposed document purpose as follows; “This standard provides specificrequirements and guidance in the design, testing, and application of the transformers covered withinits scope. These transformers incorporate high-temperature insulation systems or systems that use acombination of high-temperature and conventional insulation.” After some discussion, thefollowing purposed was agreed upon; “This standard provides specific requirements fortransformers which incorporate high-temperature insulation systems or systems that use acombination of high-temperature and conventional insulation.”

The proposed title for the standard was as follows; “IEEE Standard for the Design, Testing, andApplication of Liquid-Immersed Distribution, Power, and Regulating Transformers Using High-Temperature Insulation Systems and Operating at Elevated Temperatures.” The chair suggestedthat this title may be too long and the group agreed. The following new title was agreed upon:“IEEE Standard for Liquid-Immersed Transformers Designed to Operate at Temperatures AboveConventional Limits Using High-Temperature Insulation Systems”.

The chair briefly reviewed the current version. He noted that the original document was heavilycriticized for having too much tutorial content and suggested that such material should be moved tothe IEEE 1276 guide currently under revision. The chair stated that the document will be madeavailable to the members and he requested comments and suggestions for revision before the nextmeeting.

The meeting was adjourned at 6:00PM

H.4 Old Business

There was no old business

H.5 New Business

Following Don Platts’ presentation regarding the IEEE 1538 Task Force, David Wallach made amotion that a PAR be submitted for this document as presented to the subcommittee. ClaudeBeauchemin seconded the motion and it passed by acclamation.

Following Roger Wicks’ presentation regarding the C57.100 Task Force, Sanjib Som made amotion that a PAR be submitted for this document as presented to the subcommittee. RobertThompson seconded the motion. After an extended discussion, the motion carried byacclamation.

Following Richard Marek’s presentation regarding the C57.154 Task Force, there was adiscussion about proceeding with a PAR. Alan Sbravati spoke against moving tutorialinformation out of the standard. Marek stated that these issues could be resolved duringdevelopment of the standard. Don Platts made a motion that a PAR be submitted for revision ofthis document as presented to the subcommittee. Susan McNelly seconded the motion and itpassed by acclamation.

It was announced that Sam Sharpless would be resigning as secretary of the subcommitteefollowing the meeting. Jinesh Malde will take over as secretary at the next meeting.

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H.6 Adjournment

With all business completed, the Chair called for a motion to adjourn. Rogerio Verdolin movedfor adjournment and the motion was seconded by Marcos Ferreira. The meeting was adjourned at8:53 AM.

Respectfully submitted,

Samuel L. SharplessSecretary, Insulation Life Subcommittee

Page 1 of 3

Annex I Meetings Subcommittee

March 28, 2018Pittsburgh, PAChair: Tammy BehrensVice Chair: OPEN

I.1 Meeting AdministrationIntroductions – The meeting began at 7:00 AM Wednesday, March 28, 2018 in the Riverboat room ofthe Omni William Penn Hotel in Pittsburgh, PA. Introductions were made, and sign-in sheet was routed.Attendees – Twenty-four people attended the meeting. Anyone not already in AMS as a member wasadded as a member after the meeting.

I.2 Working Group Business

Meeting began with a recap of meeting attendance from S16 meeting in Atlanta through S18 meeting inPittsburgh. With 626 registered meeting attendees (not including spouses/companions), the S18 meetingbroke the previous record of 601 (S17 New Orleans). Talked about attendance numbers at the Sundayevent (capacity crowd of 424), Monday and Tuesday lunches, Early Bird event and spouse/companiontours. See presentation for actual numbers.

Next topic of business was a feedback discussion around the S18 100th Anniversary meeting. No negativefeedback was given with the exception of some continued glitches in the RFID system programming thatrequired some working groups to take attendance on paper and the relative small size of some of themeeting rooms at the Omni compared to other venues. Overall, everyone was pleased with the hotel, hotelstaff and flow of the meeting and extracurricular events.

Third topic of business was a discussion around considerations for future meeting sites. Committee chairput forth the following list of considerations:

potential hosts in the area# of attendees we need to accommodateavailability of technical tours and activitieswalking distance restaurantsproximity to an international airport

Discussed the purpose of hosts and some ideas on how to find hosts, i.e. solicit at opening/closing bi-annual meeting sessions, have officers reach out to long-time attendees in potential meeting cities. Ideaalso mentioned about adding more sponsorships in place of hosts. F18 in Jacksonville, Florida, will be ahost-less meeting (Hyatt Regency is host hotel with hotel reservations being accepted starting 3/29/18).S19 meeting will be in either Kansas City, Missouri, or Anaheim, California, with the lead going toAnaheim after a show of hands and previous discussion with the Committee officers. F19 is leaningtoward Columbus, Ohio; however, preliminary dates include Canadian Thanksgiving, so we will checkwith Columbus venue for any additional availability.

Thanked meeting hosts, Dennis and Janet Blake and Pennsylvania Transformer Technology, for all theirtime and effort put into helping organize such an historical meeting and shared a list of volunteeropportunities with the group with some new volunteers stepping up for future meetings:

Jerry Murphy – meeting schedule (will work with Sue on this for F18 meeting in Jacksonville)Daniel Weyer – RFID assistant for Kris Zibert

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Finally, we received updates from the different Task Forces within the Meetings Subcommittee:

I.2.1 Presentations & Tutorial – Tom PrevostTom was not in attendance, but chair reached out to him after the meeting, and Tom is working on somepresentations for the F18 meeting, including a tutorial on Roberts rules that needs to first be discussedwith the officers before becoming feasible.

I.2.2 Break Sponsor – Ed SmithEd was also unable to make the meeting, but he informed the Chair that sponsorships are booked outthrough F19 meeting; first available break sponsorship is for S20 meeting.

I.2.3 Historian – Peter BalmaPeter updated attendees on what it took to put the 100th anniversary meeting together and thankedeveryone who sent photos for the booklet and posters as well as everyone who participated in theplanning calls over the last 18 months. Peter hopes to attend more meetings in the future and continue tohost History sessions at those meetings.

I.2.4 Website – Sue McNellySue will continue to update the current website on the current platform. She has received no newinformation on when the new web platform/Word Press will be available or when training will occur.Once the new website becomes a reality, Sue will be looking for volunteers to help with the developmentand editing, as needed.

I.2.5 Mobile App/Guidebook – David WallachConsensus was to continue using the Guidebook app while advertising it more at registration as well asin pre-meeting emails and on the website. David has a graphic he can post on the schedule boards at eachmeeting that gives directions for use. The idea was also floated about introducing it to IEEE to see ifother Committees may be interested in using it which could help defer some of our costs, either throughreferral credit or promoting it enough that IEEE will sponsor the cost. Current cost of this app is $2000for two meetings (we will owe Guidebook again in Fall 2018 – no charge for the spring meeting as thatwas prepaid last fall). Chart below shows downloads compared to registered attendance to calculateadoption/usage; we seem to hover around 50%. Other Guidebook metrics for S18 meeting also attached.

S18 PittsburghGuidebook Metrics.pdf

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I.2.6 RFID – Kris ZibertKris presented his own slides as a post-mortem on the RFID system at the S18 meeting as well as a roadmap for future enhancements (see attached slides for reference). In short, attendees were able to scan inwith varying degrees of success, some Kindles displayed incorrect working group at time of meeting andsome officers did not receive report emails. For all three of these issues, Kris identified correctiveactions for the next meeting that should clear up most – if not all – of the issues.

Short term roadmap options include the development company implementing a “live” feed of attendeesand quorum status with a final report at the end or whatever point in time is chosen sent to officers. Costwould be a one-time setup fee of $5000. Data info/privacy issues were brought up in regards to this, soKris will investigate this with SerialIO/development company and Committee officers before pursuingapproval.

Finally, Kris included some other needs, including money to replace/refurbish one of our blue boxes thatappears to have a bad power connection, purchase another Kindle Fire and another blue box for when werun seven concurrent sessions (approx. $1000 needed before F18 meeting). Other needs were for theChair to publicize Directions/Guidelines for RFID use to both attendees and working group leaders.Final need was a call for help, which was answered by Daniel Weyer who Kris has already startedtraining on the system.

S18 RFID Updateand Road Map.pptx

I.2.7 Meeting Schedule – Sue McNelly / Jerry MurphyThis was a new request to help maintain and modify the meeting schedule master Excel file SueMcNelly put together for the S18 meeting for all subsequent meetings. Jerry Murphy volunteered to takethis on for subsequent meetings. Sue will work with Jerry for the fall meeting and then turn it over tohim for future meeting schedule management.

I.3 Chair Presentation/Slides

S18 SC MeetingsPlanning SC Presentation_3-28-18.pptx

Annex J Performance Characteristics Subcommittee

March 28th, 2018; Pittsburgh, Pennsylvania USA

UNAPPROVED MINUTES

Chair: Craig StiegemeierVice Chair: Sanjib SomSecretary: Rogerio Verdolin

J.1 Introduction / AttendanceThere were 75 of the 107 PCS members in attendance so quorum was achieved (70% in attendance). Inaddition, 85 guests were present at the meeting, of which 26 were first time attendees. The totalattendance at the meeting was 160. There were 11 guests who attended previous meetings that requestedmembership - they will be reviewed and added before the Fall 2018 meeting in Jacksonville, Florida, ifthey meet the membership requirements.

The Secretary distributed rosters for the seating arrangement in the room.

J.2 Chairman’s Remarks

The Chair introduced himself, the vice–chair and secretary and provided the below updates andcomments.

• 2018 PAR’s

– P60076-16 IEEE/IEC Wind Turbine Transformers (waiting on IEC)

– C57.158 Tertiary/Stabilization Windings (complete)

– C57.110 Non-sinusoidal Load Currents (complete)

– C57.21 Shunt Reactors (will file PAR extension in May)

• 2019 PAR’s

– C57.105 3-ph Transf. Connections– C57.109 Through-Fault-Current Duration

• 2020 PAR’s

– C57.164 Short Circuit Withstand Guide– C57.18.10 Semiconductor Rectifier Transformers

• 2021 PAR’s

– C57.142 Transient Guide– C57.32A Neutral Grounding Devices amendment– C57.123 Loss measurement guide

• C57.133 Guide for Short Circuit Testing (Expired)

• C57.136 Sound Abatement Guide (2018 – will let expire)

• C57.149 SFRA Guide (2022)

• C57.159 DPV Transformers (2026)

Annex J

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• C57.32 Neutral Grounding Devices (2025)

• C57.120 Loss Evaluation Guide (2027)

Working Group / Task Force Leaders

• Issue agenda at least 2 weeks ahead of time

• Minutes are due in 15 days – MS Word format

• Please keep your webpages up to date – review regularly and send any content/files to Sue

• Must track attendance in AM System

• A patent call must occur at every WG meeting

• No photography or recording of any kind is allowed

• Except by officers to support accurate minutes

• It must not be shared and deleted immediately after use

Attendance / Membership / Quorum• Please record your attendance on one of the rosters being circulated – we only need your name if

you are not on the roster

• 9 “Corresponding Members” are counted as “Guests” in terms of attendance for a quorum

• Requests for membership will be granted after the meeting if you’ve made the past 2 or 3 of thelast 5 meetings

• PCS now has 98 members after a review of the Fall 2017 meeting attendance, along with the 4previous meetings

• A meeting quorum will be reached if 50 members are in attendance

The below 17 Guests requested membership at the Fall 2017 meeting and have attended the past 2 or 3 ofthe last 5 meetings. They have been added as Members for the Spring 2018 meeting:

• Daniel Blaydon• Reto Fausch• Rob Ghosh• John Herron• Thang Hochanh• John John• Egon Kirchenmayer• Alexander Kraetge• Deepak Kumaria

• Tim-Felix Mai• Emilio Morales-Cruz• Shankar Nambi• Sanjay Patel• Ion Radu• Jason Varnell• Krishnamurthy Vijayan• Kris Zibert

The below 5 Guests requested membership but have not participated in the past 2 or 3 of the past 5meetings. If present today and still request membership, these Guests will become Members at the Fall2018 meeting:

• Florian Costa• Ramsis Girgis• Monty Goulkhah

• Gary Hoffman• Richard vonGemmingen

These 9 Corresponding Members are being counted as guest status to support reaching the meetingquorum. They continue to receive communications and their guidance for the working group is mostwelcome.

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• Donald Chu• Larry Coffeen• Jerry Corkran• Richard Dudley• Tamyres Machado Junior

• Dennis Marlow• Bipin Patel• Paulette Powell• Loren Wagenaar

J.3 Approval of Agenda

The Chair presented the agenda and requested if there was any objection to unanimous approval of theagenda - hearing none the agenda was unanimously approved. The agenda had been sent to the membersby email several weeks prior to the meeting

J.4 Approval of Last Meeting Minutes

The Chair presented the minutes of meeting held in the Fall 2017 meeting, Louisville, Kentucky, USA onNovember 1st, 2017 and requested if there was any objection to unanimous approval of the agenda -hearing none the minutes was unanimously approved. The minutes had been sent to the members byemail several weeks prior to the meeting

J.5 Minutes from Working Groups and Task Force

The following WG and Task Force reports were received (the reports are appended later).• WG on Tertiary/Stabilization Windings PC57.158 E. Betancourt• TF to determine need for OLTC Field Test Guide M. Ferreira• TF on PCS Revisions to Test Code C57.12.90 H. Sahin• WG on C57.109 - Through-Fault-Current Duration V. Mehrotra• TF on Audible Sound Revision to Clause 13 of C57.12.90 R. Girgis (B. Beaster)• WG on Non-sinusoidal Load Currents C57.110 R. Marek• TF on PCS Revisions to C57.12.00 T. Ansari• WG Shunt Reactors C57.21 S. Som• WG IEEE/IEC Wind Turbine Generator Transformers, P60076-16 P. Hopkinson• WG on C57.18.10 Semiconductor Rectifier Transformers S. Kennedy• WG 3-ph Transf. Connections C57.105 R. Verdolin• WG on HV & EHV (Breaker & Transformer) Transients C57.142 J. McBride• WG Short Circuit Design Criteria C57.164 S. Patel• WG on Neutral Grounding Devices PC57.32a S. Panetta• WG on Loss Measurement C57.123 E. teNyenhuis• TF to deal with the impact of different oils E. teNyenhuis

Below are highlights that were discussed at the PCS meeting:1) WG on Tertiary/Stabilization Windings PC57.158: The WG C57.158 Guide for Application of

Tertiary and Stabilizing Windings did not meet the quorum to conduct any further officialbusiness. Before starting the meeting, it was announced that the work of this Group had beencompleted, as the document was approved during the last RevCom meeting (December 2017).

2) TF to determine need for OLTC Field Test Guide: TF was created to determine a need forOLTC diagnostic Field testing guide, the Chair reminded to the group this TF is to evaluatevarious field diagnostic testing processes used in the industry. At the TF meeting a motion wasapproved unanimously with no negative vote “A field diagnostic testing guide is needed forOLTC”. At the PCS meeting a motion to create a PAR was tabled during the meeting, giving theTF time to work out details of submitting a PAR at the Jacksonville meeting. During thatmeeting they will develop a title, scope and purpose for the standard.

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3) TF on PCS Revisions to Test Code C57.12.90: The TF has agreed to keep the voltage andcurrent functional test proposal. The TF will have meetings between now and the fall to finalizesections 8.7 and 9.6 and send out for a vote before the fall meeting. The TF reviewed the windingresistance test requirement on wye connection transformers with neutral bushing brought out thatverifies the neutral connection. It was agreed to pass on a recommendation to update Section5.4.1 to state: “In addition, in order to verify neutral connection, when there is a neutral bushingbrought out, at least one terminal-to-neutral measurement must be made and reported at theneutral position”. This helps clear up confusion over whether terminal to terminal or terminal toneutral resistance reading should be reported.

4) WG on C57.109 - Through-Fault-Current Duration: The ballot resolution group reviewed 31comments that were received on Draft D3.0. The chair reviewed the disposition comments foreach comment with the WG. There were no comments from the WG on the dispositions given bythe ballot resolution group. After all the ballot comments were reviewed a general discussion tookplace regarding the terminology used in the guide when referring to overloading. The discussionended as the WG decided to proceed with the wording in the current draft.

5) TF on Audible Sound Revision to Clause 13 of C57.12.90: Editorial comments from the 2ndsurvey for revisions to Table 17 and Annex C in C57.12.00 were incorporated into the TF’srecommendations. Review the full minutes for details on 5 topics that have lingered fromprevious meetings. The topic of including fan noise in load noise rather than no load noise will bereviewed in the Jacksonville Fall.

6) WG on Non-sinusoidal Load Currents C57.110: No meeting was held this time since thedocument was just successfully balloted on October 19, followed by two successful Recirculationballots. The ballot has met the 75% returned ballot requirement. 123 eligible people in this ballotgroup. 100% affirmative votes. 90% votes received. The document is ready to be submitted toRevCom and should be ready to publish well before the PAR expires at the end of this year.

7) TF on PCS Revisions to C57.12.00: The TF determined that there is not a need to change thepresent working relating to the definition of short circuit power on multi-winding transformers.There was discussion related to the fault contribution from all un-faulted terminals, if nototherwise specified by customers.

8) WG Shunt Reactors C57.21: A request for PAR extension will be submitted since there is notenough time to complete the process by year’s end. During the meeting, an Excel file withtechnically incorrect topics was presented and several topics were corrected and closed.

9) WG IEEE/IEC Wind Turbine Generator Transformers, P60076-16: The Chair reported thatthe intent of the meeting was to review the last ballot and then to vote to send the standard on toRevCom. This schedule was delayed because the chair received a list of “editorial changes” fromTom Breckenridge indicating that the FDIS from IEC would include these changes.

10) WG on C57.18.10 Semiconductor Rectifier Transformers: The Chair and Vice-Chair wentover the changes in Draft 3. Impulse testing of rectifier transformers was discussed during themeeting.

11) WG 3-ph Transf. Connections C57.105: The new draft D6 was approved to go to sponsor ballotby the WG and PCS.

12) WG on HV & EHV (Breaker & Transformer) Transients C57.142: Much of the materialfrom the task force paper and the neutral grounding material have been included in Draft 4.

13) WG Short Circuit Design Criteria C57.164: A brief presentation on short-circuit testing was givenby Shankar Subramany from the KEMA Laboratories. It was agreed that 1.0 per-unit of nominalsystem voltage should be used versus 1.05 that was in the previous draft, unless specifiedotherwise.

14) WG on Neutral Grounding Devices PC57.32a: TF submitted to PCS for ballot. Procedure forballoting was presented in the meeting.

15) WG on Loss Measurement C57.123: Results of a survey were reviewed and draft text forreview in Jacksonville will be prepared before the meeting. The Chair is ensuring

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communication with IEC 60076-19 on loss uncertainty to confirm C57.123 is in sync with thecontent in the IEC guide.

16) TF to deal with the impact of different oils: A motion in PCS was made to move the agreedupon TF motion to the C57.12.90 continuous revision for implementation. The motion was“Revise the standards to say it is recommended that the insulating liquid used for service also beused for factory testing. In the case it is agreed by the user and manufacturer to not test with thesame liquid type, it should be supported by calculation or experience”.

J.6 Unfinished (Old) Business

None

J.7 New Business and Motions

A PAR will be open on C57.149-2012, the SFRA test guide, as it will expire in 2022. Chuck Sweetservolunteered to be the chair, and he’s selected Poorvi Patel as Vice Chair. Brief review of core gassingphenomena by Phil Hopkinson, as already reported in other SC’s.

Adjournment was proposed by Marcos Ferreira and seconded by Dan Sauer.

The meeting was adjourned at 4.15 pm.

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J.8 Minutes of Meetings of Working Group (WG) and Task Force (TF) Reports (all unapproved)

J.8.1 PCS Working Group on Guide for Application of Tertiary and Stabilizing WindingsPC57.158

Performance Characteristics SubcommitteeIEEE / PES Transformers Committee

The WG C57.158 Guide for Application of Tertiary and Stabilizing Windings met on March 26, at 9:30AM. Nine Members and 13 Guests were present, out of 32 regular members; we did not meet a quorum toconduct any further official business. Before starting the meeting, it was announced that the work of thisGroup had been completed, as the document was approved during the last RevCom meeting (December2017). The Chair presented to the attendance the most relevant editorial adjustments made to the latestdraft of C57.158, showing that no changes were made to the technical contents of the document.Publication of our document is expected in a term of two to three months.

There were a few, minor corrections to the minutes of the previous meeting from Louisville, Kentucky,proposed by members present. As we did not meet a quorum, the Chair of the WG will promote approvalof those minutes by e-mail communication. Summary of approval votes and corrected minutes will besubmitted to the Chair of the PCS, as soon as the process is completed.Respectfully submitted: Enrique Betancourt, WG Chair

J.8.2 PCS Task Force on OLTC Diagnostics / Testing

Performance Characteristics SubcommitteeIEEE / PES Transformers Committee

March 27th, 2018 9:30AM Omni William Penn Hotel Pittsburgh, Pennsylvania, USA

The PCS Task Force on OLTC testing / diagnostics met on Monday, March 26th 2018. The Chair MarcosFerreira called the Group to order at 9:30am and explained purpose and scope of the TF. There were 38guest and 33 members present. Group has 48 members so we had the quorum. 9 guests requestedmembership.

The motion to approve the agenda was initiated by Ed teNyenhuis and seconded by Axel Kraemer. Nodiscussion took place and agenda was approved unanimously with no comments or amendments.Motion to approve the minutes of last meeting was initiated by Kristopher Neild and seconded by WesSchrom, No discussion took place and minutes was approved unanimously.Agenda Items were covered as follows.Chair Marcos Ferreira reminded the group This TF is to evaluate various field diagnostic testingprocesses used in the industry and determine a guide is needed” and request Raka Levi to present theliterature search results on different type of LTC diagnostics tests. Raka Levi presented slides on industrydata, manufacturers of instruments for Dynamic resistance and vibro-acoustic method of LTC diagnostics

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and reference to several papers written in past twenty years. At the conclusion of presentation, Rakasuggested an IEEE guide on these tests is needed.John Herron made the comment that we are seeing only two test method and not talking about all theprevious method of testing in the field. Chair suggested that these two method does not have any guidehence we are discussing it.Chair invited Peter Werelius to present the DRM test method. Peter presented DRM testing done onresistance type tap changers and demonstrated the different way of performing DRM is producingdifferent result and hence with limited guidance it is confusing to many people. Several different methodssuch as dynamic voltage, Dynamic current and Dynamic resistance method is used. In lieu of properguide and understanding it is very difficult to reach at right conclusion hence it is important to have aLTC diagnostics guide.Chair invited Cornelius Plath to present the DRM test method. Cornelius highlighted the various factoraffecting the test and analysis. DRM produces different signature for different type of LTC and verydifficult to diagnose the old tap changers. During the presentation an example of DRM test before andafter maintenance of LTC was presented. Question was asked on what type of maintenance, to thatCornelius informed that it was complete mechanical maintenance and he does not have other details ofmaintenance. In conclusion Cornelius insisted need of guide to give proper understanding in industry.John Harron commented that all the test data presented belongs to resistance type and no where it ismentioned about the reactor type.Raka Levi replied that the test data of reactor type LTC is available and mentioned in several paperspresented in last 10 years. Peter Werelius mentioned that there are data of different test method producingdifferent result.Chair invited Marc Foata to present the Vibration method of diagnostics. Marc said the interpretation isnot easy and at present all the investigators are working individually without talking to each other ismaking the process of diagnosis harder. Every method has its limitation diagnosing the problem withdifferent type of tap changer i.e. one method does not fit all so the guide will be helpful highlighting thoselimitations.Joe Foldi asked if there is consideration of using the sound method for diagnostics, Raka insisted theVibro acoustic method is in fact a sound test, the accelerometer is just larger frequency spectruminstrument compared to a microphone, which Marc mentioned that these are two different method. Puresound and vibration sound are two different method and cannot be treated as one to supplement other.John Harron asked if this test is performed by transformer manufacturer, to that Marc said No. John ifthere is no bench mark from manufacturer how can it be used in field as diagnostics method. Marc saidmore work need to be done.John Harron mentioned that the scope is too broad and LTC testing is covered in field test guide C57.152.So it will be good idea expanding the LTC test section in C57.152 than creating another guide.Motion initiated by Stephanie Denzer and seconded by Anthony Franchitti “The group has evaluated theneed of a guide for DRM and Vibration method of LTC diagnostics”.Chair invited team for discussion, John said the scope is focusing on two methods, it needs to be general.Craig Stiegemeier said the scope need to be general so that more diagnostics test can be added to it.Don Platts said he is leaning towards adding to C57.152. and there is no need for a separate guide. ChuckSweetser mentions that the evaluation is not enough on these two method at this time, hence it will becomplicated. With no further discussion Chair asked for vote. The motion failed due to unanimouslynegative vote. The motion was modified and initiated by David Geibel “A field testing guide is needed onLTC diagnostics” seconded by Marc Foata. With no further discussion, motion passed unanimously withno negative vote.Chair informed the group that he will request PCS subcommittee for initiating working group on A guideon LTC diagnostics test.Meeting adjourned at 10:45AM.

Respectfully submitted by

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Marcos Ferreira Raka Levi Tauhid AnsariChair Vice Chair Secretary

J.8.3 Task Force on PCS Revisions to C57.12.90

Title: Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating TransformersMarch 26, 2018, 11:00am-12:15pm

Omni William Penn HotelMeeting Room “Urban (17)”

Pittsburgh, Pennsylvania USAChair: Hakan Sahin Secretary: Hamid Abdelkamel

The TF Chair called the meeting to order at 11:00am The chair went through a review of the purpose of the task force and the proposed agenda for themeeting.

Spring 2018 Agenda1. AdministrativeA. Statement of PurposeB. Introductions and attendance sheetsC. Approval of agendaD. Approval of the minutes of the meeting – Fall -2017

2. Old BusinessA. Changes to C57.12.90 on the Load Tap Changer performance voltage test and current test3. New BusinessA. Winding resistance test requirement on wye connected transformers with neutral bushing brought out4. New Business5. Adjourn

The chair commented that we would come back and approve the agenda if we have the quorum. In orderto leave time at the end of the meeting, chair asked if anyone would have any new business. No newbusiness was requested.

There were 39 of the 68 TF members in attendance making this meeting “official” as a quorum of 57.3%was reached.The following 13 members were moved to guest status due to lack of attendance (missing 3 or more ofthe last 5 meetings): James Antweiler, Allan Bartek, Alain Bolliger, Elizabeth Bray, John John, VladimirKhalin, Joseph Melanson, Amitav Mukerji, David Ostrander, Kirk Robbins, Rodrigo Ronchi, MikeSpurlock, and Sukhdev Walia.

Also 20 Guests requested membership last fall 2017 meeting, and they have attended the past 2 meetingsor 3 of the last 5 meetings. They are our newest Members: Hamid Abdelkamel, Raj Ahuja, Sanket Bolar,Eun Cho, Hugo Flores, John Foschia, Bill Griesacker, John Herron, Mohammad Iman, Peter Kleine,Fernando Leal, Ion Radu, Amitabh Sarkar, Markus Schiessl, Cihangir John Sen, William Solano, LizSullivan, Janusz Szczechowski, David Walker, and Matthew Weisensee.

There are 3 Corresponding Members counted as guests.

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After approving the agenda and the minutes from the Fall 2017 meeting, the task force moved on to oldbusiness, which is the LTC performance voltage test and current test to be included in future versions ofC57.12.90.The Chair gave about 5 minutes for those attending the meeting to read the below text in 8.7 to enable adiscussion. Then he showed the text for section 9.6.8.7 On-Load Tap Changer End to End Voltage TestIn order to verify the performance of a transformer that has an on-load tap changer (OLTC), the OLTCshall be operated through one end to end to end (from one extreme tap to the other extreme tap and back)with the transformer energized at rated voltage with minimum control voltage of 85%. The test may beperformed in intervals if needed, but it is a requirement that the transformer be energized at no less thanrated voltage for each tap change, and the applied voltage can be adjusted to the rated voltage of the tapposition. The transformer shall be observed during this test and the operator shall identify that the soundduring the tap changing operations was either normal or abnormal. Note that with some types of tapchangers, there will be an abnormally loud sound if components are not connected properly. Thetransformer will have passed this test if the tap changer operates normally, with no abnormal sound, andno abnormal observations in the test control system which may cause the test circuit to trip. Oil samplestaken from the OLTC compartment of vacuum type tap-changers, before and after the test, may showsome increase of dissolved gases, which is due to current commutation, resistor heating and / or stray-gassing of the oil. For mineral oil, the increase of the sum of H2, CH4, C2H6, C2H4 and C2H2 shouldnot exceed 12 ppm for in-tank type LTCs and 6 ppm for compartment type LTCs. For non vacuum typetap changers the determination is with abnormal sound only.Note: During the operation of the change-over selector (reversing switch or coarse-tap selector), thesound can be slightly different.

9.6 On-Load Tap Changer End to End Current TestIn order to verify the performance of a transformer that has an on-load tap changer (OLTC), the OLTCshall be operated through one end to end (from one extreme tap to the other extreme tap) with thetransformer current at the top nameplate MVA rating with minimum control voltage of 85%. The test maybe performed in intervals if needed, but it is a requirement that the transformer current be no less than80% of the top MVA nameplate current for each tap change. The transformer shall be observed duringthis test and the operator shall identify that the sound during the tap changing operations was eithernormal or abnormal. Note that with some types of tap changers, there will be an abnormally loud sound ifcomponents are not connected properly. The transformer will have passed this test if the tap changeroperates normally, with no abnormal sound and no abnormal observations in the test control system maycause the test circuit to trip. Oil samples taken from the OLTC of vacuum type tap-changers, before andafter the test, may show some increase of dissolved gases, which is due to current commutation, resistorheating and / or stray-gassing of the oil. For mineral oil, the increase of the sum of H2, CH4, C2H6,C2H4 and C2H2 should not exceed 12 ppm for in-tank type LTCs and 6 ppm for compartment typeLTCs. For non vacuum type tap changers the determination is with abnormal sound only.Note: During the operation of the change-over selector (reversing switch or coarse-tap selector), thesound can be slightly different.

The Chair then opened the meeting to the floor for discussion.Joe Foldi asked about the meaning of performing the test in intervals if needed. Joe Foldi suggested thatthe test be performed continuously and remove the “the test may be performed in intervals if needed”.Due to the fact that there were similar comments for the last several years, The Chair asked by a showingof hands who agrees to keep the on load tap changer voltage and current functional test proposal inC57.12.90. The majority agreed to keep the voltage and current functional test proposal.The Chair commented that he will email members and guests and ask for volunteers to work off site andhave meetings via skype or other means, and finalize section 8.7 and 9.6 and send out for voting prior tonext meeting (fall 2018).

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The Chair then moved on to discuss new business from fall 2017 meeting, pertinent to winding resistancetest requirement on wye connected transformers with neutral bushing brought outSections 5.4 and 5.4.1 below are taken from C57.12.90 – 2015.

The Chair asked the following question: If the DC winding resistance test is performed terminal-to-terminal only, can we catch an issue with the neutral connection if the test is not performed terminal toneutral?

There was a discussion on why there is a need for an additional terminal to neutral resistance if terminal-to-terminal resistance is being performed, which is required for load loss calculation. Kushal Singh sharedthat they had instances where a transformer supplier connected the on load tap changer to the wrongneutral location. Since then they started requesting resistance measurement on all 3 phases: terminal toterminal and terminal to neutral.Dan Sauer explained that by performing terminal to terminal resistance measurement, the connection willbe proved terminal to terminal including windings. However, an additional test, terminal to neutral wouldbe required to verify the connection from neutral point to the bushing.

Kris Neild made a motion to approve the proposed wording for 5.4.1 shown below. Dan Sauer secondedthe motion.Ajith Varghese requested a friendly amendment to add ‘at rated tap’ to the proposed wording.

Kris Neild accepted the friendly amendment.5.4.1 Wye windingsFor the wye windings, the reported resistance measurement may be from terminal to terminal or fromterminal to neutral. When there is a neutral bushing brought out, at least one terminal-to-neutralmeasurement must be made and reported. For the reported total winding resistance, the resistance of thelead from the neutral connection to the neutral bushing may be excluded. For the terminal-to-terminalmeasurements, the total resistance reported is the sum of the three measurements divided by two.One of the meeting attendees recommended to change ‘For the wye windings, the reported resistancemeasurements may be from terminal to terminal. . .’ to ‘For the wye windings, the reported resistancemeasurements shall be from terminal to terminal. . .’Jason Varnell suggested to add ‘in addition to’ to the existing statement in the current section and movingthe statement to the end of the paragraph 5.4.1 when adding ‘In addition, in order to verify neutralconnection, when there is a neutral bushing brought out, at least one terminal-to-neutral measurementmust be made and reported at the neutral position.The group voted and agreed the changes as motion and friendly amendment agreed to.The Chair then asked if there is any new business to be discussed during fall 2018 meeting. No newbusiness was mentioned.

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The meeting was adjourned at 12:10pm.

J.8.4 Working Group for Revision of C57.109

Title: Guide for Liquid-Immersed Transformer Through–Fault-Current DurationOmni William Penn Hotel

Pittsburgh, Pennsylvania, USAMonday, March 26, 2018

1:45 pm – 3:00 pm

The Working Group (WG) met on Monday, March 26th at 1:45pm. The chair welcomed everyone to ourWG meeting. The secretary passed out rosters. The chair requested any relevant patents to be brought tothe attention of the WG. There were none. Quorum was established with 7 of 9 members present. Therewere 45 participants present. Three requested membership but only one (Shankar Subramany) met theattendance criteria for membership. The agenda for the current WG meeting was approved unanimouslyas were the last WG meeting minutes from Louisville.The chair then updated the WG on the status of ballot progress. He stated that the ballot resolution groupmet on two occasions (Jan 26, Feb 16) via conference call between the last WG meeting in Louisville andthe current WG meeting in Pittsburgh. The ballot resolution group reviewed 31 comments that werereceived on Draft D3.0. The chair reviewed the disposition comments for each comment with the WG.There were no comments from the WG on the dispositions given by the ballot resolution group. After allthe ballot comments were reviewed a general discussion took place regarding the terminology used in theguide when referring to overloading. This comment was raised by Juan Castellanos. He was stating that itwould be highly unusual for an overload to be 5x rated current and suggested that either the value of 5xbe reconsidered or changing the wording such that it doesn’t state that the 5x rated current is caused byoverloads. There was discussion supporting observed instances where the short duration overload may begreater than 3.5x rated current in applications such as traction transformers or category I or IItransformers. The discussion ended as the WG decided to proceed with the wording in the current draftand suggested the commenter review the draft during recirculation and propose the comment if desired.A motion was raised by Weijun Li to proceed to recirculation ballot with draft 4.0. This motion wasseconded by Juan Castellanos. The motion passed unanimously.A motion was raised by Weijun Li to adjourn the WG meeting. This motion was seconded by AkashJoshi. The motion passed unanimously.The meeting adjourned at 2:51pm.Respectfully submittedVinay MehrotraWG Chair

J.8.5 TF Audible Sound Revision to Test Code C57.12.90

Title: Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating TransformersPittsburgh, Pennsylvania

The TF met at 1:45 PM, on Monday, March 26, 2017. Chairman Dr. Ramsis Girgis presidedover the meeting. Secretary Barry Beaster assisted with the administrative duties.After the fall 2017 meeting, the membership had been adjusted to 43 members. This meetingwas attended by 26 of the 43 members and 54 guests for a total of 80 persons. A quorum wasestablished after the meeting via a paper sign-in count and confirmed by the RFID tag in system.

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The unapproved agenda was presented without change at the meeting. The fall 2017 meetingminutes had no requested changes, corrections, or objections to being unanimously approved.There were ten requests for TF membership; which will be reviewed based on previous meetingattendance.

Chairman Dr. Ramsis Girgis presided over the technical portion of the meeting.Prior to the meeting, a second survey was issued to members and recent attendees of the TF forcomments on the second revision to Table 17 and Annex C in C57.12.00. In another mailing, theunapproved fall 2017 minutes were circulated to all members and guests of the last meeting.

The first technical Agenda item presented was a summary of the returns of the second task forcesurvey. There was a total of 81 sent, with 32 returns. The breakdown is; 23 approved with nocomments, 7 approvals with comments, one not approved, and one abstain. The comments wereall of editorial nature but, nevertheless will improve the presentation of data in Annex C. The“Not approved” vote was related to the suggestion to guarantee the total noise level of atransformer which is not the subject of this survey.

At the meeting, a slide was presented that had the following previously agreed uponenhancements to Annex C of C57.12.00:

§ Incorporate NEMA TR1 Tables 1 & 2 for No load sound levels into Annex – C.1 andC.2; respectively

§ Replacing the formulas presently included in Annex – C.3, for calculating reference loadSound Power levels, with tables of corresponding Sound Pressure levels

§ Modify reference to the revised Annex – C in Table 17Per the returns of the survey, the following changes have been incorporated in Table C.1:

§ In the title of the Annex, the word “oil” is replaced by the word “liquid”.§ The heading of the left column is changed to read “Sound Pressure Level, dB (A)”.

§ The word “kVA” is added to the top column heading so it now reads “Equivalent Two-Winding kVA rating”

§ Note 1 now includes ODWF and ONWF for column 1and OFAF in Column 2.For Table C.2, the heading of the first column now reads, “Equivalent Two-Winding kVArating” and the second column now reads, “Sound Pressure Level, dB (A)”.For Table C.3, a sound level is introduced for 30 MVA transformers. Also, MVA ratings thathave the same Load noise levels are not presented as a group in one row.The title of Table C.3 now reads, ‘Reference Audible sound pressure levels of load noise’.Asterisks have been added to clarify that the MVA values in the Table refer to the Full MVANameplate rating. In addition; the following note was added “For intermediate MVA ratings,interpolate using the sound levels in the range of the closest MVA ratings”.

Finally, the following sentence has been added to the paragraph in Table 17 that referencesAnnex C: “These sound pressure levels apply to both single- and three-phase transformers”.Two comments were raised as to whether this interpolation should be done with the sound pressurereadings or converted to power and then interpolated and converted. The chairman noted that a simpleinterpolation of the dB values would be adequate.

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The next topic was a presentation of several items raised in previous TF meetings.

Item 1: Relationship between Load noise and MVAR of the transformer§ The chairman presented measured Load noise data for a number of transformers of

different sizes, MVA & kV ratings, and impedances vs. MVARs. The data showed nocorrelation

Item 2: Addition of Sound Levels of No Load and Load Noise§ The chairman presented data for 4 different combinations of No load and load noise

levels. The data showed that one would get the same value of the total sound levelwhether by adding the final values of these two components of the total noise or byadding their individual frequency components and then summing up the resultingfrequency components of the total noise.

Item 3: Impact of Temperature on core noise§ Core Noise data, presented by two manufacturers, of a number of transformers measured

at different core temperatures showed very small impact of core temperature on corelosses.

§ The chairman, however, stated that some core materials can experience high increases ofcore losses and core noise levels caused by internal mechanical stresses due to laminationelongation. This has been experienced with core laminations that has insulation coatingthat applies a low level of surface tension. This impact is typically experienced in higheriron loss materials when operating at high flux densities. Also, it was mentioned that corelosses go back to their original value once the core temperature decreases to its originalvalue. It was suggested that such a statement could be included in C57.12.00 forawareness purposes. A similar statement for the effect on core losses is being consideredto be added to the new revision of the Loss measurement Guide, C57.123. The chairmansuggested that this subject is discussed further in the next meeting of the TF.

Item 4: Impact of Temperature on Load noise

§ Load Noise data of a number of transformers, measured before and after the heat-run test,were presented by three manufacturers. The data showed a small increase in somedesigns and a small decrease in other designs. Out of the 10 transformers tested, onedesign showed a 4.5 dB increase in load noise after the heat-run. It was not clear why thistransformer tested higher than all other transformers.

Item 5: Load noise vs. Tap position

§ Load Noise data of a number of transformers measured at different tap positions, werepresented by three manufacturers. The data generally showed an increase of a maximumof 3 dB with all turns in vs the neutral position. With all turns out, the measured loadnoise level was slightly higher for some transformers and slightly lower for othertransformers.

§ With all turns out, one Autotransformer measured about 11 dB lower. For thistransformer, a much lower level of current, corresponding to this tap position wasapplied.

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Upon completion of the discussions of Items 3, 4, and 5 above, the Chairman plans to discusswith the TF meeting attendees if there is text to be added to table 17 of C57.12.00 and / or Clause13 of C57.12.90.Mr. Sanjay Patel brought up the issue of whether fan noise should be included with Load noiserather no load noise as presently is the case in the Standards. This issue was briefly discussed atthe end of the meeting. This subject will be covered in more detail in future meetings of the TF.

In the PCS meeting, Jin Sim asked about the need for the Sound Abatement Guide and whetherthis TF was going to address this. Ed teNyenhuis responded that the TF has previouslyrecommended to let this Guide expire. In response to this request, the Chairman plans to lookinto the Guide and see if there are a couple of useful pieces of information that may need to bemoved to C57.12.90. He intends to discuss this matter in the next meeting of the TF.The meeting was adjourned at 3:00 PM.Respectively submitted,Barry Beaster, TF Secretary

J.8.6 WG on Non-sinusoidal Load Currents C57.110

Title: Recommended Practice for Establishing Liquid-Immersed and Dry-Type Power andDistribution Transformer Capability When Supplying Nonsinusoidal Load Currents

Spring 2018 Meeting, March 25 –29Omni William Penn Hotel; Pittsburgh, Pennsylvania USA

Chair: Rick Marek Secretary: Sam Sharpless

PC57.110D6: Recommended Practice for Establishing Liquid-Immersed and Dry-Type Power andDistribution Transformer Capability When Supplying Nonsinusoidal Load CurrentsNo meeting was held this time since the document was just successfully balloted on October 19, followedby two successful Recirculation ballots.The ballot has met the 75% returned ballot requirement.123 eligible people in this ballot group.100% affirmative votes90% votes receivedThe document is ready to be submitted to RevCom and should be ready to publish well before the PARexpires at the end of this year.

J.8.7 Task Force on General Requirements C57.12.00

Title: Standard for General Requirements for Liquid-Immersed Distribution, Power, andRegulating Transformers

Performance Characteristics SubcommitteeIEEE / PES Transformers Committee

March 26, 2018 4:45 PMThe Omni William Penn HotelPittsburgh, Pennsylvania USA

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The PCS Task Force on General Requirements for C57.12.00 met on Monday, March 26, 2018. TheChair Tauhid Ansari called the Group to order at 16:50 and explained purpose and scope of the TF.According to paper roaster, 37 Members and 50 guests were present but hands counting and RFIDindicated 42 members present. The meeting was adjourned before the roaster circulated in room so wedecided to take the hand counting and RFID data as acceptable counting. As the Task Force membershipstands at 81 members, we did have a quorum to conduct official business. The following 8 guestsrequested membership:

Alexander Winter HighvoltDavid Walker MGM Transformer Co.Don Dorris Nashville Electric ServiceGregorio Lobo MEPPIJohn Hall TVAJorge Cruz Cienfuegos PTIKushal Singh ComEdPeter Zhao Hydro One

As a first count yielded 42 individuals standing as WG members, it was originally assumed we had aquorum, and the Chair continued regular business with the Group.The Louisville minutes were approved by the Group (Roger Verdolin/Eduardo García), with no oneopposed. The Agenda was approved by the group.Agenda Items were covered as follows.1. OLD BUSINESS

WG Item 109. New text proposed by Sanjay Patel complementary to the definition of short circuitpower in multi-winding transformers. Discussion on the subject started in the previous meeting andwas not concluded.The Chair opened the floor for discussion. As there were no comments from the attendance, the itemwas considered finished, with no change recommended to present wording in the standard.

WG Item 110. Subject brought up by Liz Sullivan, pointing out differences in Applied Test Voltagevalues for 34.5 kV network transformers. Comparing standards C57.12.40 and C57.12.00, excessivevoltage should be applied to the HV bushings, according to the second standard.

No members of the Distribution Transformers SC were present. Bertrand Poulin recommended torefer the subject to the Dielectric Test SC. Jorge Cruz pointed out that the subject does not belong toC57.12.00 WG. The topic was dropped from the WG’s agenda.

2. NEW BUSINESSThere was no new business brought up from the attendance.

Phil Hoppkinson requested to consider the subject of core gassing in distribution transformers,already discussed in the PCS in 2015. No further comments from the attendance.With motion from Akash Joshi /Kristopher Nield, the meeting was adjourned at 5:30 pm.

Respectfully submitted,

Tauhid Ansari Enrique BetancourtWG Chair Secretary

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J.8.8 WG Shunt Reactors C57.21

Title: Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500kVA

Pittsburgh, PAOmni William Penn HotelTuesday March 27, 2018

The working group met in the Allegheny room of the Omni William Penn Hotel on Tuesday March 27,2018, at 9:30 AM.The meeting was called to order at 9:30 AM by the Chairman Sanjib Som.

There were a total of 65 participants: 12 Members and 53 Guests.

· The meeting was opened with the Chairman remarks and the circulation of attendance rosters.· 12 of the current 16 WG Members were present and quorum to carry out business was met.

Meeting notes:

· Meeting Agenda· Meeting agenda, which was circulated among members and guests on March 18 by

email, was presented to the audience.· There were no objections or comments and the agenda was approved unanimously.

· Minutes from previous meeting· The minutes from the F17 meeting in Louisville, which were circulated on March 18,

2018 by email, were presented to the audience.· There were no objections or comments and the F17 meeting minutes were approved.

· Unfinished Business:

Document status:

· Par and standard expire December 2018 and although draft 2 has been circulated among themembers for comments, it is not ready for approvals by the WG.

· Draft 2 has been circulated and after mostly editorial changes and some technical updates, draft 3will be circulated within few days.

· Once the draft 3 is approved by the member, next step requires approval by PCS however stillneeds work and it won't be ready for the subcommittee meeting on March 28, 2018.

· The CRG is now set in place by the Chairman.

· A request for PAR extension will be submitted since there is not enough time to complete theprocess by year's end. Main issue has been the delayed response by the members; all areencouraged to expedite their comments to the Chair.

· During the meeting, an Excel file with technically incorrect topics was presented and severaltopics were corrected and closed, mainly:

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o Enrique Betancourt: Table 6, BIL levels for 800 kV class, values do not match thosevalues in note 13.

o Ulf Radbrandt: system frequency, 50 Hz vs 60 Hz equations. This topic will beaddressed during the next revision of the document as it is a time consuming task.

o Mike Sharp: section 10.6; remove the first paragraph regarding a reference to ratings aslower voltages and power.

o Arturo Del Rio: reference to a standard in the scope was corrected.o Chris Ploetner and Luc Dorpmanns also submitted comments and updates via email as

they were not present in the meeting.

· The WG agreed in principle that there are no major unresolved issues that could delay thecompletion of the document; however, the PAR extension will be requested after membersapprove draft 3 to allow due process for the editorial and balloting processes.

· Malia Zaman was present in the meeting and clarified to the participants topics related to expirydates for the PAR and the document and the effects of a standard becoming inactive.

· The PAR extension request will be done once the document is ready for balloting, and beforeOctober 15th, 2018.

No new businesses were presented and the meeting was adjourned at 10:15 am.

Next meeting: Fall 2018, Jacksonville, FL, October 14-18, 2018.

Respectfully submitted,Chairman: Sanjib Som (ssom@patransformer.com)Secretary: Arturo Del Rio (a.delrio@ieee.org)

J.8.9 IEEE/IEC WG Wind Turbine Generator Transformers, P60076-16

Title: Power Transformers - Part 16: Transformers for Wind Turbine Application

Chairman: Phil Hopkinson; Secretary: Donald Ayers

The Working Group on Wind Turbine Generator Transformers was called to order at 8:00 a.m. EST onTuesday, March 27, 2018 at the OMNI William Penn Hotel, Pittsburgh PA. There were 91 attendees with27 members present of a voting membership of 59. Note: 10 attendees including 4 members did notregister through the RFID system.

No quorum was present so no actions were initiated and no votes were taken.

The meeting agenda and the minutes of the previous meetings will be approved by mailed ballot tomembers. The minutes from the Spring, 2017 meeting were reviewed.

Philip Hopkinson, Chair, reviewed the history of the working group. He reported that the intent of themeeting was to review the last ballot and then to vote to send the standard on to RevCom. This schedulewas delayed because the chair received a list of “editorial changes” from Tom Breckenridge indicatingthat the FDIS from IEC would include these changes.

The results of the last ballot was reviewed and declared successful

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RESPONSE RATE

This ballot has met the 75% returned ballot requirement. 151 eligible people in this ballot group.

122 affirmative votes

5 total negative votes with comments 0 negative votes with new comments 0 negative votes withoutcomments

8 abstention votes: (Lack of expertise: 3, Lack of time: 1, Other: 4)

135 votes received = 89% returned

5% abstention

APPROVAL RATE

The 75% affirmation requirement is being met. 122 affirmative votes

5 negative votes with comments 127 votes = 96% affirmative

Erin Spiewak, IEEE, indicated that she would (1) have the IEEE Editorial Staff review the changes and(2) request the FDIS from the IEC be expedited. The IEEE Editorial Staff will work with the IEC todetermine if the changes are truly editorial or if some technical changes are included. If the changes arejust editorial, then with the submittal of the IEC FDIS, the standard will be submitted to RevCom forapproval. If some changes are technical then the standard will require submittal for one last ballot prior tosubmittal to RevCom with a successful ballot..With no quorum the meeting was adjourned at 8:30 a.m.Respectfully submitted,Donald E. Ayers Secretary

J.8.10 Working Group on Semiconductor Power Transformers – C57.18.10

Title: Standard Practices and Requirements for Semiconductor Power Rectifier TransformersUnapproved Meeting Minutes

Omni William Penn Hotel, Pittsburgh, PAMarch 27, 2018

The Working Group met in the Allegheny meeting room

Sheldon called the meeting to order at 11:00am

There were 18 members and 20 guests present. A quorum was present (18 of 29 members).

The patent call was given. Nobody replied with any patent issues.

Don Ayers moved for approval of the minutes as written, Subash Sarkar seconded. The minutes of theNovember 2018 meeting in Louisville were unanimously approved as written.

Discussion of Draft 3 Revisions-

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Sheldon and Bill went over the changes in Draft 3. Don Ayers mentioned that normative standards needto be referenced in normative text. Sheldon suggested the reference to 1653.1 in sections 9.1 and 9.2 bemodified to state that IEEE 1653.1 takes precedence over C57.18.10 only if it is cited by the customer.Subash Sarkar made motion to accept this language, Dinesh Sankarakurup seconded the motion. Motionpassed unanimously. A brief discussion about the need for the tolerances in 1653.1 followed. John Johnsaid that the calculation of eddy losses in bud bars is very difficult to calculate and he had sent commentsto that effect. Sheldon said that there wasn't time to include that in the draft yet. Joe Foldi said thatcalculating Eddy losses in windings was easy while bus is hard is and is more like stray loss rather thaneddy loss. Needs 3D FEA analysis and even that is difficult or impossible in most situations.

Paul Buddingh sent in information on high resistance grounding of rectifier transformers and theproblems with resistance grounded drive transformers but there was not time to include in the draft yet.Craig Stiegimeier moved that this information be put into an annex, Vijay Tendulkay seconded themotion. Motion passed unanimously.

Old Business:Sheldon referenced Dinesh Sankarakurup's question from the last meeting about impulse testing ofrectifier transformers- Standard refers to 12.90 and 12.91 for LV impulse testing. Should we mention LVimpulse testing because rectifier transformers with multiple LV sections are often tested in non-standardways? Should we cover how you test this type of LV winding? What about testing in cases wheresecondary impedance was too low to get a good impulse waveform? Sheldon talked about impracticalityof doing impulse on large rectifier transformers. However medium voltage drive transformers are moreamenable to impulse testing. Sheldon mentioned that multipulse drive transformers often have highcommon voltage that require special testing. David Walker mentioned that almost all drive transformersspecify a modified applied voltage test to account for common voltages.

New Business:No new business

With no further business, the meeting was adjourned at 11:48am.

The Working Group will meet again at the Fall 2018 meeting in Jacksonville, FL

Chairman: Sheldon Kennedy

Vice Chairman: Bill Whitehead

Secretary: David Walker

J.8.11 PC57.105 – IEEE Guide for Application of Transformer Connections in Three-PhaseElectrical Systems

Title: Guide for Application of Transformer Connections in Three-Phase Electrical SystemsC57.105 3-ph Transf. Connections

Tuesday, March 27th, 2018 - (1:45 PM – 3:00 PM)

Chair: Rogerio VerdolinVice-Chair: Benjamin Garcia

1. Attendance:

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a. Members (out of 10): 8b. Guests: 20c. Guests requested membership 0d. Total: 28e. Quorum (6 required): YES

2. Patents: Call for patents were made by the Chair. No patents were claimed by guests/members.

3. Meeting Called to Order: 1:45 pm on Tuesday, March 27th, 2018.

4. Fall 2017 Minutes Approval: A motion was made by Phil Hopkinson, and seconded by DavidWalker, to approve the meeting minutes from the fall 2017 meeting in Louisville, KY. Byunanimous vote, the minutes were approved.

5. Spring 2018 Agenda Approval: A motion was made by David Walker, and seconded by PhilHopkinson, to approve the meeting agenda for spring 2018 in Pittsburgh, PA. By unanimousvote, the minutes were approved.

6. PAR Status: PAR expires December 31st, 2019, which represents 2 meetings before we have toconclude the guide. The PAR was approved March 2015. The draft has to go to ballot at the endof 2018. We have to conclude our draft by fall of 2018.

7. At the last meeting (Fall 2017 – Louisville, KY), all members in attendance voted and approvedsending the draft standard to ballot; this vote exceeded the minimum 2/3 requirement by IEEE.

8. Since the last meeting, each member:a. Reviewed the entire document for technical content and editorial changesb. Took a small section ~5 pages to do a deep dive reviewc. Reviewed the draft standard format; ensured it followed the IEEE style manuald. All comments were submitted, addressed and incorporated into the draft revision

completed before today’s meeting

9. Based on volunteers from the membership, the ballot resolution group will be:- Roger Verdolin- David Walker- Dan Mulkey- Ben Garcia

10. Based on the updated document, Phil Hopkinson motioned that the new draft standard go toballot. This motion was seconded by Alexandro Macias.

No Old Business:· None

Next Steps:

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· None

11. Meeting Adjourned at 2:00pma. Motion: Sam Sharplessb. 2nd: Alexandro Macias

Respectively submitted,Rogerio Verdolin, ChairBenjamin Garcia, Vice-Chair

J.8.12 Working Group for the revision of C57.142

Title: Guide to Describe the Occurrence and Mitigation of Switching Transients Induced byTransformers, Switching Device, and System Interaction

Pittsburgh, PennsylvaniaTuesday, March 27, 2018

3:15 PM – 4:30 PMUrban (17)

Chairman – Jim McBrideVice Chair – Xose Lopez-Fernandez

Secretary – Tom Melle

1) Meeting called to order at 3:15 PM

2) Welcome and Chair’s Remarks

3) No essential patent claims made

4) Circulation of Attendance Sheets73 Attendees were present (45 Guests)28 of 54 Members present (quorum was achieved)

5) No opposition to approval (motion by Phil Hopkinson and 2nd by Rogerio Verdolin) of Agendaand Minutes from Last WG Meeting.

6) Approval of Agenda (motion by Pierre Riffon and 2nd by Rogerio Verdolin)

7) Review of C57.142 Draft 4 – March 2018, Chair noted that some editorial changes have beenincluded. However, there may be additional editing / cleanup needed. Much of the material from the taskforce paper and the neutral grounding material have been included in Draft 4. The chair requested thatthe membership please review and comment on the existing draft in the next two weeks if possible. Wewill be presenting this draft at the upcoming meeting with the Switchgear Committee in Florida.

Pierre Riffon made a comment about (capacitor bank) switching control / disconnect switch transients asa mitigation method. This mitigation method is included in the present draft Annex 5 Example 5.

There was a suggestion to possibly bullet point mitigation methods after each example.

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Question: Joshua Yun asked if the SGC is working to further mitigate the transients created by switchdevices.Answer: There is no knowledge of active work by SGC, but several OEM’s are working onlimiting/preventing re-strike/re-ignition by different methods during reactor switching. We are planningto meet with the SGC at their upcoming meeting.Phil Hopkinson asked about mitigation on the LV side of a power transformer. The Chair stated thatadding capacitance to the LV side was used in e auto-transformer example. However, other methods maybe more commonly used today. Phil stated that at least one manufacturer has placed arrestors at25/50/75% points in the winding. He stated that at 34.5 kV and below static shields added to the windingseems to increase probability of surviving re-strikes.

8) Upcoming Co-Sponsor Switchgear Committee Meeting –April 22nd – 26th, 2018 in Lake Buena Vista, FLC57.142 WG Update Meeting Tuesday, April 24th, 2018 2:00–6:00pm

9) Upcoming CIGRE Meetings in Rio de Janeiro, Brazil – April 9-12, 2018April 9th -11th - JWG A2/C4.52 HF Transformer Modeling. April 12th CEPEL Workshop on HighFrequency Transient Measurement

10) Mitigation Methods, Factory Testing, and Field Service Conditions TFPhil Hopkinson – TF ChairPierre Riffon – TF Vice-ChairAkash Joshi – TF SecretaryJim McBrideMike SpurlockHamid SharifnicShekhar VoraWaldemar ZiomekPugal SelvarajDave CaverlyJohn HallAmitabh SarkarChangir SenMonty GoulkhahRogerio Verdolin

Phil Hopkinson reminded the WG that many old transformers had electrostatic shields, but they were notrequired to pass 100-200 BIL testing for 34.5 kV. Transformers that are failing in the field are passing testlevels. Mitigation methods with some success have included: higher BIL, open terminal special impulsetest, and fast-front switching surge with a long tail time. Phil urged the group to focus on both design andtest. The conclusion is that increasing the series capacitance and reducing the capacitance to groundshould improve the design.

Question: Dr. Bob Degeneff – how many transformers have these or are these problems affecting? Henoted that factory testing is not necessarily realistic (e.g. impulse is not superimposed on 60 hz waveform)

Bill Lazerlere – Bill cautioned about putting capacitors in series with voltage taps as the capacitor maynot be a “capacitor” at the higher frequencies. This mitigation method is under discussion and notnecessarily the best or only mitigation tool.

Failures (Jagdish Burde) many transformers that seemed initially to fail due to switching transients.

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Nigel McQuinn mentioned that in the past snubber circuits were used as mitigation methods to counteractsteep front waves affecting motors and the same technology could be used for protection of transformers.The use of snubbers, however, is not as practical with HV/EHV systems. The chair noted that snubbermitigation methods were used in some of the examples in C57.142.

Joel Kern has witnessed several failures due to switching transients in a variety of transformers includingfactory transformers and wind farm units.

11) New Business: none

12) Next Meeting: Jacksonville, FL

13) Adjournment at 4:30 PM (motion by Pierre Riffon and 2nd by Rogerio Verdolin)

J.8.13 WG PC57.164 Short Circuit Withstand Guide

Title: Guide for Establishing Short Circuit Withstand Capabilities of Liquid Immersed PowerTransformers, Regulators, and Reactors

Working Group C57.164 Short Circuit WithstandPittsburgh, PA – March 27, 2018

Sanjay Patel, Chair; Raj Ahuja, Vice-Chair; Joe Watson, SecretaryThe Working Group met at 4.45 PM in the Urban room on the 17th floor on March 27, 2018.

The Chairman, Sanjay Patel, led the meeting and the Secretary, Joe Watson was present. The Vice-Chair,Raj Ahuja, was unable to attend.

There were 66 attendees in total with 25 of the 57 WG members present. A quorum was not present, butno items were voted on other than acceptance of the previous minutes which will need to be re-voted byemail to the members. The complete attendance will be entered into the AMS database.

There were no essential patents noted by any of the attendees when the question was raised.

A brief presentation on short-circuit testing was given by Shankar Subramany from the KEMALaboratories. The presentation included several questions on interpreting the IEEE standards for shortcircuit testing and these were referred to the working group for C57.12.90.

Sanjay Patel reminded the group of their obligations to help write and review the document. There arestill a few sections that need to be developed.

Joe Watson briefly discussed the sections on short circuit fault current calculations and the models andequations in that section. Muhammad Ali Masood Cheema volunteered to review that section and createsome additional material. Enrique Betancourt has volunteered to compare the draft 2 to existing IEEEstandard 242-2001 for any errors or the need to include some more examples.

We discussed the standard pre-fault voltage to be used in the fault current calculations which was listed as1.05 per-unit in the draft. It was agreed that a 1.0 per-unit pre-fault voltage should be used instead andthis should be 1.0 per-unit nominal system voltage class (230 kV, 138kV, etc.) for all calculations unlessspecified otherwise and not the tap voltage.

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Joe Watson also briefly presented the new material in the Design Review section and advised the group todownload the latest draft of the document and review the new sections and be prepared to discuss anyrecommendations at the next meeting.

Joe Foldi recommended that it should be the manufacturers’ responsibility to calculate the mechanicalforces, since they typically have more precise programs and models. We discussed including somegeneral mechanical force calculations in the Guide, which Muhammad Ali Masood Cheema offered todraft and there was not clear consensus either way on this. This may be included in the next draft for abetter evaluation.

Joe Foldi also made some general recommendations for additions to the Design Review section to includemore specific forces for different types of windings (no need for axial force evaluation on radial spacersfor core-form layer windings, for example). This may be done with a table or text. To be determined.

The meeting adjourned at 6:05 PM.

J.8.14 WG on Neutral Grounding Devices PC57.32a

Title: Standard for Requirements, Terminology, and Test Procedures for Neutral GroundingDevices Amendment: Neutral Grounding Resistor Section

Pittsburgh, PAMonday, March 26, 2018

4:45 PM – 6:00 PMChair – Sergio Panetta

Vice Chair – Yann ElassadCall to Order

Self-introduction of all present

Patent Announcement

Quorum

The committee has 14 voting members:

1. Sheldon Kennedy Present2. Sergio Panetta Present3. Yann Elassad Present4. Bernard Audouard5. Tom Yingling Present6. Ed teNyenhuis Present7. Les Recksiedler8. Sinan Balban Present9. Federico Turner Present10. Richard Field Present11. Stuart Gibbon Present12. Andrew Keith Present13. Edmundo Perich Present14. Bob Berger Present

Attendance: 48 total.

Approval of Minutes motion by Yann Elassad, seconded by Stuart Gibbon. No Changes.

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Comments on C57.32a draft v7, Lines 289-290 are marked as deleted in error. The lines were deleted in error andwill be reinstated.

Erin Spiewak described the procedure for balloting. Editorial review, sign ups period, Comments period, Commentsreviewed by committee, amendments and corrections, Final approval.

Motion by Sinan Balban to change language of Applied Voltage Test from current C57.32 standard back tolanguage in IEEE 32-1972 that the applied voltage test is between the element and bank frame and not from theelement to the enclosure, seconded by Richard Field. Point of Order that the amendment has been sent for ballotingand it must be rescinded before this change can be made.

Motion to rescind current ballot by Sinan Balban, seconded by Richard Field. Yes votes: Andrew, Richard, Stuart,Edmundo, Bob, Sinan. No votes: Federico, Yann, Tom, Ed, Sheldon. Motion fails.

The chairman asked for a straw vote on rescinding the ballot. Result 5 yes, 6 no.

Erin confirmed it is acceptable to change the Applied Voltage Test during the commenting stage of ballot approval.Balloting requires 75% of the ballot voting members to vote and an approval of 75% of those who vote.

New Business

Question by Richard Field on how to change the C57.32 standard after this amendment committee hascompleted its task. Procedure is to petition the C57.32 committee for another amendment.

Next meeting is the 2018 Fall meeting in Jacksonville, FL October 14-19, 2018

Adjournment

Respectfully Submitted,Tom Yingling - Secretary3/31/20187

J.8.15 Working Group C57.123 Loss Measurement Guide

Title: Guide for Transformer Loss MeasurementPittsburgh, PA – Mar 26, 2018

The Working Group met at 15:15 in the Allegheny Room on March 26, 2018. This was the secondmeeting since receiving the PAR for revision of the guide. This guide was first published in 2002,revised in 2010 and there is now a PAR for revision that expires in 2021.

§ The Chair, Ed teNyenhuis, led the meeting. The secretary, Anthony Franchitti, took the minutes.§ The following persons were present:

Jason Attard - GuestWilliam Dietrich - GuestReto Fausch - GuestAnthony Franchitti – Member (Secretary)David Garcia - GuestRamsis Girgis - MemberTed Johnstone - GuestRicardo Lopes - GuestDhiru Patel - GuestJarrod Prince - GuestAdnan Rashid - GuestEduardo Robles - Guest

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Adam Rosenstein - GuestMahesh Sampat - GuestH. Jin Sim - GuestErin Spiewak - GuestAndrew Steineman - MemberTanya Steinhauser - GuestCraig Stiegemeier - MemberCraig Swinderman - GuestDragan Tabakovic - GuestMarc Taylor - GuestEd teNyenhuis – Member (Chair)Lin Tong - GuestKiran Vedante - GuestJuntao Zhong - Guest

§ Four of the six members were present. Therefore, a quorum was reached.

§ A motion to approve the meeting minutes was made by Ramsis Girgis and seconded by AndySteineman. There were no comments and the minutes were approved unanimously.

§ The Agenda was presented and a motion to approve the agenda was made by Ramsis Girgis andseconded by Andy Steineman. There were no comments and the agenda was approved unanimously.

§ Discussion regarding the Scope of C57.123 ensued as to whether this guide should include ShuntReactors. It was agreed that another guide (C57.41) covers Shunt Reactors and should not be part ofC57.123 Scope.

OLD BUSINESS

§ Agenda Items were covered as follows.

§ Results of the PCS Survey on Phase Angle Correction (Sect. 4.4.1) and Bridge Method (Sect. 4.5.4)was presented by the Chair. It was determined from the comments and discussion that both methodsshould be retained in the guide but that section 4.4.1 should be revised to clarify when phase anglecorrection may be applied. Ramsis Girgis agreed to re-write this section.

§ Comments from Mark Perkins on 3.5.3, 4.4.4.2 & 4.5.4 were presented and discussed. The Chair willincorporate Mark’s comments into the draft guide and check with the C57.12.90 WG regarding addingdiscussion on the use of capacitors to correct phase angle and smooth voltage waveform during no-loadloss measurements with a high impedance source. The Chair suggested that the use of capacitors duringNLL measurements should be added as a cautionary note in section 3.5.3.

§ Updates on Assigned tasks from the Fall 2017 were presented by the Chair:

o Sections 3.1 to 3.5.2 were reviewed by Ramsis Girgis and draft updates were presented anddiscussed. A new paragraph to section 3.2.10 describing temperature effects to no-load lossmeasurements of lower quality core steels was added by Ramsis. General agreement wasobtained from the WG to keep the paragraph as drafted.

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o Section 3.5.3 was reviewed by Bertrand Poulin. Mark Perkins also provided comments forthis section which were reviewed at the meeting as mentioned above. The Chair willincorporate Mark’s comments into the draft of C57.123.

o Section 4.5.3 - Test of Three-Phase Transformer with a Single-Phase Voltage: Due to thepracticality difficulties in this method, it was discussed whether this section should be deletedin its entirety. The Chair will discuss the possibility of eliminating this section with BertrandPoulin.

o Sections 4.5.4 & 5 were to be reviewed by Eddy So. Due to time constraints, he could notable to complete his review. The Chair will ask for Eddy’s review to be completed.

o Section 6 was to be reviewed by Ramsis Girgis. Ramsis will review this section.

o Section 7 was assigned to Reto Fauseh for review.

o Section 8 was reviewed by Andy Steineman. Andy had no comments for this section.

o The bibliography will be reviewed by Eddy So and Bertrand Poulin.

§ It was agreed by the WG to have the above sections reviewed and comments provided within twomonths of this meeting. The Chair will then draft the revision to C57.123 and send out for commentsbefore the next meeting.

NEW BUSINESS

§ There was no new business to discuss.

The meeting was adjourned at 16:10 with a motion by Ramsis Girgis and seconded by Andy Steineman.

J.8.16 Task Force Meeting - Insulating Liquid for Factory Testing

Pittsburgh PA – Mar 27, 2018

§ The Task Force met at 11.00 AM in the Sky Room on March 27, 2018

§ The Chair, Ed teNyenhuis, led the meeting.

§ There were 96 persons present. This was the first meeting so there was no membership list. Theattendees were told that anyone could be a member for voting purposes since this was the firstmeeting.

§ The original request was in the Task Force on PCS Revisions to C57.12.90 at the Fall 2017 Louisvillemeeting. Steve Schroeder requested: “We should address the fact that a transformer must be testedwith in the same Liquid that it will be filled with in service. This is due to the fact that natural esterand mineral oil have very different properties. This is most critical for temp run and dielectric tests”.The scope of the task force was to recommend back to the SC if any changes to the standards shouldbe made.

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§ The main point of the discussion is for transformers designed for natural ester oil but the transformeris filled with mineral oil in the factory.

§ A Technical Overview was given by Alan Sbravati from Cargill of the impact of using a differentinsulating liquid for the first impregnation & factory testing versus a different insulating liquid fordesign / service. The presentation will be available for the attendees. The main conclusions were:

1. There is sufficient design margin to account for residual mineral oil slightly affecting thedielectric and thermal properties of the natural ester oil

2. Above 230kV it is more critical that the same oil be used for factory testing as used in service

§ A transformer manufacturer commented that they strongly recommend that the same insulating liquidtype should be used for factory test and in service since:§ Cooling performance of natural esters is much different compared to mineral oil§ Dielectric properties (strength and stress distribution) of natural ester is different compared to

mineral oil§ Material compatibility is not same for both liquids§ Once impregnated with mineral oil, cellulose insulation cannot be re-impregnated with

natural ester. This has effect on cooling, dielectric and aging performances.

§ Stray gassing after the unit is in service could be an issue (with mixed mineral and ester oil)

§ Several utilities indicated that they specify that the oil the transformer is designed for must be used inthe factory.

§ Several reasons were given why a transformer manufacturer would not want to fill the transformerwith natural ester oil in the factory:

1. Natural ester oil has a longer impregnation time (up to 3 times longer than mineral oil)2. The oxidation stability of natural esters would require that the transformer could not be filled

with dry air during shipment (if shipped without oil). It must be filled with Nitrogen forshipping which has more complications.

3. A separate oil farm system, hoses etc is required for natural ester oil which could be a burdenfor just occasional natural ester oil usage.

§ A motion was given to recommend to “Revise the standards to say that the insulating liquid used forservice must also be used for factory testing”. This was motioned by Paul Morakinyo and secondedby Don Platts. This was voted on and the motion did not pass (19 votes for and 24 votes against).

§ A second motion was given to recommend to “Revise the standards to say it is recommended that theinsulating liquid used for service also be used for factory testing. In the case it is agreed by the userand manufacturer to not test with the same liquid type, it should be supported by calculation orexperience”. This was motioned by Patrick McShane and seconded by Jeff Valmus. This was votedon and the motion did pass (19 votes for and 16 votes against).

§ The chair will present the TF recommendation to the subcommittee.

§ Meeting was adjourned at 12.17 PM

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Annex K Power Transformers Subcommittee

March 28, 2017Pittsburgh, PAMeeting Time: 1:30 p.m.

Chair: Bill GriesackerVice Chair: Kipp YuleSecretary: Alwyn VanderWalt

K.1 Meeting Attendance

The Power Transformers Subcommittee met on Wednesday, March 28, 2017, at 1:30 PM. Theattendance recorded indicated that 64 out of 112 members of the subcommittee were inattendance; a quorum at the meeting was achieved. A total of 191 individuals attended themeeting; 22 guests requested membership.

K.2 Approval of previous meeting minutes, and meeting agenda

The agenda was presented but only provisionally approved until a quorum could be obtained.

Once a quorum was reached, the Chair requested a motion to approve the Agenda and the Fall2017 Louisville meeting minutes. A motion was made by Dan Sauer to approve by unanimousconsent both the agenda and the Fall 2017 meeting minutes. The motion was seconded by DanBlaydon. There were no objections and both the agenda and previous meetings minutes weretherefore approved.

K.3 Chair’s RemarksThe chair stated that Kipp Yule will be stepping down as Vice-Chair, and requested names ofvolunteers to fill the vacancy.

K.4 Working group reports

K.4.1 Revision of C57.12.10 IEEE Standard Requirements for Liquid-Immersed PowerTransformers – Gary HoffmanThe document was approved by RevCom at their December meeting. Currently the document isbeing edited.

K.4.2 Revision of C57.93 IEEE Guide for Installation and Maintenance of Liquid-ImmersedPower Transformers – Mike LauSee details of meeting minutes in Attachment K.4.2. Mike Lau reported that the document isout for balloting. A ballot resolution group was formed to address ballot comments. Theobjective is to report back with a final document by August 1. The chair will also apply for aballot extension in case the working group is unable to resolve all ballot comments before yearend, when the PAR expires.

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K.4.3 Revision of C57.125 Guide for Failure Investigation, Documentation, Analysis andReporting for Power Transformers and Shunt Reactors – W. BinderNo meeting was held.

K.4.4 TF to Compare C57.131-2012 Standard for Load Tap Changers and IEC 60214-1 ED 2.0for consideration of recommending adoption of IEC standard (Also WG 60214-2 Tap-Changer Application Guide) - Craig Colopy

TF Comparison of IEC 60214-1 and IEEE C57.131: See details of meeting minutes inAttachments K.4.4.1. Craig Colopy reported that a meeting was held but that a quorum was notachieved. The current PAR which expires Dec. 2020, is for adoption of IEC 60214-1. The chairexplained that the IEC does not allow the IEEE to adopt an IEC standard. The result is that thecurrent PAR will be cancelled and reissued as a new joint revision of IEC 60214-1.

WG TC Application Guide IEC 60214-2: See details of meeting minutes in AttachmentsK.4.4.2. Craig Colopy reported that a meeting was held during which a quorum was reached.The chair reported that there was a 100% approval from IEEE recirculation ballot, but that thedocument is being held back from IEEE SA submission until IEC CDV process is completed.The IEC 60214-2 CDV will be introduced to the member countries the week of March 26,2018. After IEC CDV comments are reviewed and addressed by members of the joint revisionteam, the IEEE ballot is likely to be re-circulated to ensure approval for any major technicalchanges.

K.4.5 C57.140 Guide for the Evaluation and Reconditioning of Liquid-Immersed PowerTransformers – Paul BomanNo meeting was held.

K.4.6 C57.143 – Guide for Application of Monitoring Equipment to Liquid-ImmersedTransformers and Equipment – Mike SpurlockSee details of meeting minutes in Attachment K.4.6. Mike Spurlock reported that a meetingwas held and that a Quorum was reached. Various topics were discussed, which included apresentation by Emilio Morales on Chapter 5 of the guide, which would be distributed tomembers after the meeting. Following general discussion, a motion was made to change thescope of the guide to remove language stating that the guide does not cover interpretation ofmonitoring results. The motion was not approved. The members subsequently voted not toinclude a chapter to address data analytics in the guide.

K.4.7 Revision of C57.148 Guide for Control Cabinets for Power TransformersSee details of meeting minutes in Attachment K.4.7. Joe Watson reported that a meeting washeld and a quorum was reached. The TF reviewed comments for section 6 and 7 of thedocument following a straw ballot earlier this year. Following debate about comment #10 ofthe straw ballot regarding control cabinet drawing requirements, a motion was approved toform a new task force to create a new section for this in the guide.

K.4.8 Revision of C57.150 Guide for the Transportation of Transformers and Reactors Rated10,000 kVA or Larger – Greg AndersonSee details of meeting minutes in Attachment K.4.8. A meeting was held and a quorum wasreached. The WG reviewed the status of related guides such as CIGRE and other documentsrelated to the topic to compare the contents of those documents in relation to this guide. During

Annex K

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this meeting a guest presentation was delivered that covered industry trends regarding impactmonitoring and tracking.

K.4.9 Development of PC 57.153 Guide for Paralleling Transformers - Tom JauchNo meeting was held.

K.4.10 Development of PC57.156 Guide for Transformer Tank Rupture Mitigation of Liquid-Immersed Power Transformers and Reactors - Peter ZhaoWorking group did not meet.

K.4.11 Development of PC57.157 Guide for Conducting Functional Life Tests for De-EnergizedTap Changer Contacts - Phil HopkinsonWorking group did not meet.

K.4.12 Task Force on V/Hz Curve – Joe Watson

Joe Watson reported that the Task Force’s first meeting was held, so all attendees whorequested membership were granted membership.

A brief presentation was made on the need for the TF and problems with existing V/Hz curvesused by manufacturers and users as well as engineers who need to determine correct relaysettings.

Peter Zhao, Jin Sim and Drew Welton all expressed agreement for a need to develop bettercurves and standardize on the process so such curves would be similar from one manufacturerto the next.

Joe Watson discussed the assignment for the TF and that the TF may decide to develop a newdocument or that it may just identify a few areas that should be covered in other existingstandards.

Two sub-groups were formed, one to focus on applications (protective relaying) and another tofocus on transformer V/Hz capabilities from a design perspective.

K.4.13 Task Force on Condition Assessment Guide – Brain SparlingSee details of meeting minutes in Attachment K.4.13. A meeting was held but a quorum wasnot reached with only 22 of 73 members present. There was vigorous debate over the scope ofthe guide, and specifically whether it should include asset management as a topic. Severalarguments were made both for and against including asset management. The chair concludedthat asset management should not be included, but sine there was not a quorum present nomotion could be voted on to change the scope of the guide. More discussion will be needed onthe topic during the next meeting.

Annex K

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K.5 Old Business

None

K.6 New Business

C57.153 - Standard requirements for phase shifting transformers is due for renewal. A Task Forcewill be formed to identify the scope and which sections of the standard need to be revised. Thechair solicited volunteers to help with this.AdjournmentThe meeting was adjourned at approx. 2:09 pm

K.7 AdjournmentThe meeting was adjourned at 2:09 pm

K.8 Attachments –Working Group Meeting Minutes and AgendaAttachment K.2 – F17 PTSC AgendaAttachment K.4.2 – PC57.93 Installation GuideAttachment K.4.4.1- WG 60214-1_C57.131 Tap Changers Part 1 Performance requirementsAttachment K.4.4.2 – WG 60214-2 IEC Tap Changer Part 2 Application GuideAttachment K.4.6 – C57.143 Monitoring GuideAttachment K.4.7 – PC57.148 Control CabinetsAttachment K.4.8 – C57.150 Transportation GuideAttachment K.4.12 – Task Force on V/HzAttachment K.4.13 – Task Force on Condition Assessment Guide

Annex K

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Attachment K.2

AGENDAPower Transformers SubcommitteeIEEE PES Transformers Committee

Wednesday, March 28, 2018, 1:30-2:45 PMOmni William Penn Hotel; Pittsburgh, Pennsylvania, USA

Bill Griesacker – Chair, Kipp Yule – Vice Chair, Alwyn VanderWalt – Secretary

1. Call to order2. Distribution of attendance sheets3. Determine quorum4. Approval of previous meeting minutes5. Chair remarks6. Working Group and Task Force reports

a. WG Revision to C57.12.10, Standard Requirements ........................ G. Hoffmanb. WG Revision to C57.93, Installation Guide ....................................... M. Lauc. WG 60214-1-57-131, Tap Changers (on hold) .................................. C. Colopyd. WG Tap Changer Application Guide IEC 60214-2 ............................. C. Colopye. WG Revision of C57.143, Monitoring Guide .................................... M. Spurlockf. WG Revision of C57.148, Control Cabinet Standard ......................... J. Watsong. WG Revision of C57.150, Transportation Guide ............................... G. Andersonh. TF Transformer V/Hz Curves ........................................................... J. Watsoni. TF Transformer Condition Assessment Guide .................................. B. Sparling

7. New businessa. IEEE C57.135 Phase Shifting Transformers, joint IEC/IEEE Standard - document revision will

start in IEC. Task force to be formed to determine the scope for revising the standard.8. Old business9. Adjournment

Annex K

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Attachment K.4.2

Working Group for Installation of Power Transformers C57.93Monday, March 26, 2018

1:45 – 3:15 PMOmni Penn CL(A)

Pittsburgh, PAChairman Mike LauVice Chairman Alwyn VanderWaltSecretary Scott Reed

The meeting was called to order at 1:48 pm by Chair Mike Lau.

There were 30 of 44 members present. There were 36 guests and 39 visitors. A membership quorumwas achieved.

Agenda1. Attendance Roster Sign In / Quorum Check2. Patent Call3. Approval of the Agenda4. Approval of the Fall 2017 minutes5. Ballot

a. Draft 1.5b. Formation of the Ballot Resolution Group (Volunteers needed)

6. Unfinished Business7. New Business8. Adjournment

Attendees introduced themselves.

The Fall 2017 Minutes were unanimously approved. The Spring 2018 Agenda was unanimouslyapproved.

Chairman Lau posted the Patent Claim. No notifications or comments were received.

Chair’s Remarks:Chairman Lau discussed there are 132 individuals registered to vote. The ballot closes April 18th, 2018.So far, there have been 28 responses; therefore, 71 more responses are required to achieve 75% returnrequirement.

It was decided to prepare a Ballot Resolution Group now. The following members volunteered:Deanna Woods Joe WatsonWally Binder Kevin SullivanPat Rock Alan SbravatiStephanie Denzer Don DorrisMike Lau Alwyn VanderWalt

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Scott Reed

PAR closes at the end of the year. Need to resolve and ballot by October 15, 2018. As such, Joe Watsonmade a motion that the ballot resolution group be granted authority to finalize the changes to the guideon behalf of the working group and to present the revised guide to the working group by August 1,2018. Wally Binder seconded the motion and it unanimously passed.

Jim Graham suggested we apply for a PAR extension now so Mike will pursue. The extension can alwaysbe withdrawn later.

The meeting was adjourned at 2:24 pm.

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Attachment K.4.4.1Meeting Minutes Page 8 of 21 REV 0

P60214-1-57-131 Working Group #

Tap-Changers - Part 1: Performance requirements and test methods Working Group Title

Chair: Craig A. Colopy Vice-Chair Axel Kraemer

Secretary Adam M. Sewell

Current Draft Being Worked On: NA Dated: NA

PAR Expiration Date: December 31, 2020

Meeting Date: 27 March 2018 Time: 8:00 to 9:15

Location: Pittsburgh, PA

Meeting Minutes / Significant Issues / Comments:1. Meeting was called to order at 8:00am, March 27, 2018.

2. Introductions were made and attendance sheets were passed out.3. Call for patents were made with no response from any attendees.

4. Quorum was check – less than 50% of members attending per meeting count (11/34)a. No official business could be conducted

5. Chairman reviewed agenda and previous minutes from New Orleans6. Chairman discussed previous actions and next steps for this WG

a. Current PAR, expiring Dec. 2020, is for adoption of IEC 60214-1. Due to being a globalorganization not affiliated with the USNC, IEC doesn’t allow IEEE adopting itsstandards for use in creating an IEEE standard. ANSI recently notified IEEE of achange to the ANSI/IEEE license agreement for the sale of National adoptions of ISOand IEC Standards. This change is mandating that an adopted standard be labeled as a“U.S. national” standard and must include a U.S. national forward and national brandingon each page. Also, the adopted standard could only be actively sold/marketed in thenation it was adopted in. Due to these reasons, IEEE is no longer using ANSI to adoptISO or IEC standards due to itself being a global organization.

b. Current PAR will be cancelled and re-issued as a joint revision of IEC 60214-1, onceIEC initiates the process. IEEE Vice-chair and IEC Convenor, Axel Kraemer will workwith IEC in establishing a start date.

7. Next meeting is planned for October 2018-Jacksonville, FL Transformers Committee Meeting

Attendance: Members 17Guests 60Guests Requesting Membership 13Total 77

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8. Meeting closed at 8:30am.Submitted by: Craig A, Colopy Date: 3/28/2018

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Attachment K.4.4.2

Meeting Minutes Page 10 of 21 REV 0

P60214-2 Working Group #

Tap-Changers - Part 2: Application guide Working Group Title

Chair: Craig A. Colopy Vice-Chair Axel Kraemer

Secretary Adam M. Sewell

Current Draft Being Worked On: 14/913/CD

PAR Expiration Date: December 31, 2018

Meeting Date: 27 March 2018 Time: 13:45 to 15:00

Location: Pittsburgh, PA

Attendance: Members 18Guests 34Guests Requesting Membership 6Total 52

Meeting Minutes / Significant Issues / Comments:9. Meeting was called to order at 1:45 pm, March 27, 2018.10. Introductions were made and attendance sheets were passed out.

11. More than 50% WG members were in attendance so a quorum was established12. Call for patents were made with no response from any attendees.

13. Agenda for this meeting was unanimously approved.a. Motion-Marcos Ferreira, Marcus Stank second

14. IEEE Minutes from October 2018 in Louisville were unanimously approved.a. Motion-Dave Geibel, second- Marcos Ferreira

15. Chairman commentsa. 100% approval from IEEE recirculation ballot

i. Holding back IEEE SA submission until IEC CDV process is completedb. IEC 60214-2 CDV to be introduced to the member countries the week of March 26, 2018

i. After IEC CDV comments are reviewed and addressed by members of the joint revisionteam, the IEEE ballot is likely to be re-circulated to ensure approval for any majortechnical changes.

16. Next meeting scheduled for October 2018 in Jacksonville, FL.

17. Meeting adjourned at 2:10pm.a. Motion- Marcos Ferreira, second-Dave Geibel

Submitted by: Craig A, Colopy Date: 3/28/2018

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Attachment K.4.6

Revision to C57.143 – “Guide for Application of Monitoring Equipment toLiquid-Immersed Transformers and Components”

Transformer Monitoring Working Group

Monday, March 26, 2018Pittsburgh, PA, USAMinutes of WG Meeting

The meeting was called to order at 3:15 pm by Chair Mike Spurlock. Secretary Mark Cheathamwas also present.This was the third meeting of the working group, rosters were circulated and members asked tostand to determine quorum, quorum was reached with 44 of 81 members present. The attendancefor the meeting was as follows:

Number of Members in Activity = 81Number of Members Present = 44Quorum Present = 54.3%Number of attendees = 110Attendees requesting Membership = 21 (To be reviewed based on Participation to date)

PAR Status: PAR for a Revision to an existing IEEE StandardType of Project: Revision to IEEE Standard C57.143-2012PAR Request Date: 19-Nov-2016PAR Approval Date: 17-Feb-2017PAR Expiration Date: 31-Dec-2021

The Agenda for the meeting was reviewed as seen below.

MEETING AGENDA

A. Welcome & IntroductionB. Call for Patent DisclosureC. Roster CirculationD. Quorum Roll CallE. Chair RemarksF. New Members – Indicate on RosterG. Call for approval of Fall 2017 Meeting Minutes (Louisville, KY)H. Working Group Activities

1. Discuss progress to date and plan going forward for Chapter 1 “Overview”.2. Emilio presentation on his team’s progress on Chapter 5 “Monitored Parameters”.3. Announce new team for Chapter 6 “Monitoring Systems and Equipment”.4. Call for volunteers to assist with current teams.5. Moving ANNEX ‘E’ into a new Chapter.

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6. Moving ANNEX ‘D’ into a new Chapter.

I. New Business1. Discuss possible addition of a new Chapter on Data Analytics.

Mike Spurlock asked for any patent claims against C57.143 to be raised by attendees, nonewere raised.

Mike Spurlock reviewed the Par Status and Scope and Purpose for the PAR with the workinggroup.

Emilio Morales presented Team Progress on Chapter 5, Monitored Parameters. Thispresentation will be provided to Members and guests following the meeting. Emilio askedthe group to contact him to indicate if any sensors missing from the document that should beconsidered for inclusion.

Mike Spurlock introduced Poorvi Patel as lead of Chapter 6 review team. Poorvi and teamplanned to have first meeting on 3-26 at 5:00pm. Will look for this team to reviewconsideration of moving Annex E and D to Chapter 6 or possibly their own chapters. Thisteam will provide and update at the Jacksonville Meeting in the fall.

Luiz Cheim questioned optical temperature measurement being referred to as “DirectTemperature Measurement”. Emilio Morales indicated that this is in agreement with CIGRE,consensus among the group was to leave as is in the document.

After confirmation of quorum Mike Spurlock requested motion to approve the meetingminutes from the Fall 2017 meeting in Louisville. Joe Watson motioned for approval, RogerVerdolin seconded. Minutes were approved.

Mike Spurlock reviewed New Business, beginning with a proposal to add a chapter on DataAnalytics which possibly would include transformer fleet monitoring. This was discussedextensively by the group, some comments from the group noted below.

Luiz Cheim discussed how Cigre used high level general examples to touch on data analyticsin their monitoring guide and cautioned against going into to much details without gettinginto Patent issues.

Marc Foata expressed concern attempting to add this chapter on data analytics could cause alot of work that would ultimately not be achievable by the group.

Joe Watson suggested that the newly formed TF on Condition assessment was better suited totake on Data Analytics and that this was outside of the scope of the current C57.143 workinggroup.

Poorvi Patel suggested that at a minimum consider adding high-level general discussionto the document similar to Cigre Document.

Claude Beauchemin suggested high-level academic/generic mention of data analyticmethods to review data be noted in the guide.

Jim Dukarm suggested an article in IEEE Transactions addressing data analytics was moreappropriate and better suited to cover data analytics.

Joe Watson suggested that consideration be given to discussion in the document oncollection of data for single device and fleet level data collection and transfer for analytics,and avoiding getting into the details of analytics to be performed.

George Forest suggested listing measured parameters by monitoring devices in an Annexand adding a note to the users that there are analytics available to aid in the interpretationof results.

Following general discussion and comments a motion was proposed by Luiz Cheim torevise scope to remove “This guide does not cover interpretation of monitoring results.”And add a data analytics section/chapter. After continued discussion this motion waswithdrawn, the members present were asked to vote on adding a chapter or AnnexCovering Data Analytics. 5 of 44 members present voted yes, majority not in favor ofadding a chapter or annex to address Data Analytics.

There was also discussion on moving Annexes D and E into the main body of the guide.This will be looked into further by the review teams.

Mike Spurlock requested any attendees interested in volunteering for participating in teamsworking on current Chapter reviews for revision see him after the meeting.

A motion to Adjourn was given by Marcos Ferreira and seconded by Joe Watson,Meeting adjourned at 4:30pm.

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Attachment K.4.7

Revision of C57.148 Standard for Control Cabinets for Power TransformersJoe Watson: Chair, Weijun Li: Vice-Chair, JF Collin: Secretary

The working group met at 11:00 AM on Monday 03/26/2018 in Conference Center Room A at the OmniWilliam Penn hotel in Pittsburgh, Pennsylvania. 45 attendees were recorded, including 18 of the 29members (62%). Quorum was reached. It was the fourth official Working Group meeting for thisproject. The complete attendance record is available in the AMS System. 3 guests requestedmembership.

As required by the main committee, the Patent question was asked at the beginning of the meeting. Noessential patents were claimed. Motions were proposed by Gary Hoffman and seconded by WallaceBinder to approve the Louisville Fall 2017 meeting minutes and the Spring 2018 meeting agenda.

The WG chairman asked Shankar Nambi, leader of TF Review of Sections 6-7, to discuss the task forcecomments.

In response to Comment #10 regarding control cabinet drawing requirements, the TF suggested forminganother study group/TF to create a new section to cover drawing requirements. The intent is to definedrawing requirements and furnish necessary example drawings. A motion was proposed by RyanMusgrove and seconded by Shankar Nambi. The WG unanimously approved the forming of the new TF.Ryan Musgrove will lead this task force and will report the progress in work to the WG at the nextmeeting. The following people volunteered for this TF

• Kris Zibert• Pugal Selvaraj• Joe Watson• Shankar Nambi• Weijun Li• Paul Dolloff• Nicolas Blais• JF Collin

Regarding Comment #74 about device numbering, Section 6.1 will be revised to read "Devices shall benumbered on drawings and wiring designated with wire markers in accordance with IEEE Std. C37.2" forclarity.

In response to Comment#84 regarding NEMA ratings, the TF agreed that NEMA 3 could be the minimumrequirement instead of NEMA 3R because of protection against windblown dust and rain. The WG alsoagreed that other NEMA or IEC designations may be specified by the user for indoor locations or specialenvironments.

After reviewing the comments, a motion was made by Gary Hoffman and seconded by Patrick Rock toaccept the changes suggested by both Task Forces (TF Review of Section5 and TF Review of Sections 6-7). The motion was approved by the WG. All suggested changes will be incorporated into the reviseddocument. The revised document will be made available to the WG for review prior to the next meeting.

The group will meet again in Jacksonville, Florida in October 2018. The meeting was adjourned at12:15 PM.

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Attachment K.4.8

C57.150 – IEEE Guide for Transportation of Transformers and ReactorsTuesday, March 27, 2018Pittsburgh, PAMinutes of WG Meeting

The meeting was called to order at 11:10 am by Chair Greg Anderson. Vice-Chair Ewald Schweigerand Secretary Marnie Roussell (writer of Minutes) were also present.

There was a total of 80 people present, 23 members, 57 guests, and 3 guest requesting membership.Attendance was taken utilizing only the RFID System. Paper rosters were not passed around, so anyguests desiring membership were asked to contact one of the WG leaders.

Agenda1. Welcome2. Patent Issues3. Determination of Quorum (determined by RFID system)4. Approval of the Minutes5. Brief History of WG6. Timeline of Project7. Review of assigned work8. Presentation by Kraig Nunn, Shockwatch

A call for essential patent claims was made. No patent claims were identified.

Introductions of the Chair, Vice Chair, and Secretary were made. Attendees were asked to introducethemselves and indicate their affiliations when making comments or asking questions.

There were no objections to the agenda as identified above.

Minutes of the Spring 2017 Meeting and Fall 2017 Meeting were distributed for review earlier via email.The minutes were approved with a motion by Dave Wallach, and seconded by Kenneth Skinger.

List of Meeting Attendees is provided below. Those identified with an asterisk are WG Members inattendance. Those requesting membership are noted with two asterisks (**)

Hamid Abdelkamel*Joseph AdkinsRichard AmosGregory Anderson*Cheryl BaselChristopher BaumgartnerEnrique BetancourtWallace Binder*Dennis BlakeMike BohonekWen-Ping ChuFlorian CostaAntonio Di Biase

Rodolfo DiazPaul DolloffJames Fairris*Eduardo Garcia*James GardnerJeffrey GragertJames GrahamBill GriesackerCalvin HoJill HolmesCarl HummelToby JohnsonGael Kennedy

Stacey Kessler*Michael Lau*Antoine LecomteParry LivelyMario Locarno*Kumar ManiRogelio MartinezRobert MayerSusan McNelly*David MurrayRyan MusgrovePaul MushillShankar Nambi

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Anthony NataleJason NealJoe NimsKraig NunnGeorge PartykaBipin PatelBrian PennyEduardo Ramirez BettoniRakesh Rathi**John ReaganMarnie Roussell*Eric SchleismannAlfons Schrammel*Wesley SchromEwald Schweiger*Cihangir SenSamuel Sharpless**Mark Shem-Tov**Yukiyasu ShirasakaAndre Simons*Kenneth Skinger*Andy SpeegleAndrew SteinemanRoy Su*Kevin Sullivan*Yunhan SunTroy TanakaRobert ThompsonOlivier Uhlmann*Alwyn VanderWalt*Rogerio Verdolin*Sukhdev WaliaDavid Wallach*Joe Watson*Bruce WebbMatthew Weisensee*Daniel WeyerJeffrey WrightTzi Han YehChun-Sheng YuKris Zibert*

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9. History

Greg provided a brief history of the document and the timeline for the revision. He indicated we need to be doneat least a year prior to the 12/31/2022 expiration of the PAR.

10. Revision Topics/Assignments

Greg reviewed the first several assignments.

Assignments Chart

TaskBrief Scope(see meeting minutes)

Assigned To(need to assign a leader to each task)

CIGRE Guide Compare CIGRE document to our Guide. H. Abdelkamel, M. Locarno,V. Krishnamurthy, S. Nambi,E. Schweiger, B. Webb

Swim Lanes Add: helpful "matrix/table" to Guide D. WallachImpact Recorders Enhance section on impact recorders S. Nambi, K. Nunn, R. Rathi, J. WatsonInternal Bracing Add guidance

(careful, a design issue!)R. Verdolin, J. Watson

External Bracing,Lashing, etc.

Provide some guidance Kris Zibert

Exceeding ImpactLimits

Add: What to do if specified impact limits areexceeded.

R. Verdolin, J. Watson

Tests ** Compare Tests, C57.150 vs. C57.152 W. Binder, J. WatsonAir Pressure Add: How internal air pressure changes

w/ambient temperature.J. Arteaga

SFRA Enhance section on SFRA G. Anderson, R. Su, K. SullivanC57.93,Installation Guide

Review C57.93 for any overlap and conflicts. J. Sen

Shipping w/NaturalEster Fluids

Add section of unique issues (need)

Mobile Subs Add section of unique issues (need)

** - Work submitted earlier. Will report to WG in Pittsburgh.

CIGRE Guide

Ewald Schweiger summarized an initial review of the CIGRE Guide on Transformer Transportation,WG A2 42 (CIGRE Proceedings 673). He noted that document is 3 times the size of our guide. The documentwas reviewed, and a more thorough review will be presented at the Fall 2018 Meeting.

Swim Lanes

Dave Wallach presented the proposed “Swim Lanes” type matrix at the beginning to lay out the varioustransportation phases and to reference the appropriate clauses. Dave provided a first draft example of the conceptthat is attached at the end of the minutes.

Impact Recorders

Kraig Nunn reviewed impact recorders in a presentation on industry trends later in the meeting.

Greg suggested using inexpensive “one-shot impact indicators on essential crated components such as bushings.

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Bracing

Kris Zibert volunteered to develop the section on Internal Bracing.

Greg suggested including a section on “What to do next, if something goes wrong”, and he also suggestedcombining the internal and external bracing sections.

Joe Watson suggested a performance section for internal and external bracing

Sue McNelly requested a section on guidance on bracing for inclines.

Greg briefly reviewed a case study on the performance of an indirect lashing where the bottom lashing wasmissing.

Field Tests

Wally Binder compared Clause 10 of our guide (the section on field tests) with the Installation Guide C57.152. Itwas determined that there was no need to expand on the interpretation the of field tests or “how to” sectionbecause it is in C57.152, and it refers to C57.150.

Joe Watson and Wally Binder will continue to review the tests portion and identify any items that should beincluded. It was noted that C57.93 is going out to ballot soon, so a comparison could not be made at this time.

Remaining items will be discussed at the next meeting.

New Business

There was no new business

Special Presentation: "Industry Trends in Transportation Impact Monitoring & Tracking", by Mr. KraigNunn, Shockwatch

11. The meeting was adjourned at 12:15 pm with a motion by Bruce Webb, and seconded by Wally Binder.The WG plans to meet at the Fall 2018 Meeting in Jacksonville, Florida.

Greg AndersonWG Chair

Ewald SchweigerWG Vice Chair

Marnie RoussellWG Secretary

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Attachment K.4.12

MinutesTask Force on V/Hz

Pittsburgh, PA – March 27, 2018Kipp Yule Chair, Dr. Ramsis Girgis Vice-Chair, Joe Watson Secretary

The TF met at 3:15 PM on March 27, 2018 in the Frick Room on the CL Floor of the Omni William Penn Hotel.

This was the first official meeting of this task force and all attendees who requested membership were added asmembers. A quorum was present, but no issues were voted on. There were 25 attendees, of which 10attendees requested membership. Attendance will be entered into the AMS system on the TransformersCommittee website. The Agenda was reviewed and no objections identified, prior minutes are not applicable.There was a call for essential patent claims made. No patents were identified.

Dr. Ramsis Girgis gave a brief presentation on the need for the TF and problems with existing V/Hz curves usedby manufacturers and users as well as engineers who need to determine correct relay settings. He showed thatthere are a few older curves that are similar, but all were based on the time it took for the hot spot on a tie plateto reach 180°C; which is the criterion for short overload conditions (< 30 minutes). This has a number of flaws,namely:

· The V / Hz curve is to cover high levels of over-excitation for very short durations of seconds, or 10s ofseconds, but at the same time using a temperature limit that apply to steady state conditions.

· The curves are based on measurements for tie plates of core form transformers of certain designs andmaterials but the V/Hz curves have been used for all different kinds of core form transformers and alsofor shell-form transformers that have T beams and not tie plates.

· Modern transformer designs often utilize high-temperature insulation materials such as hightemperature fiberglass or Nomex in these areas.

He indicated the need for the TF to:

· Define standard methods and criteria that manufacturers can use to develop transformer specific V/Hzcurves

· Define Temperature – duration requirements that manufacturers need to use to adhere to in developingdesign-specific V / F Characteristics for their designs

Peter Zhao, Jin Sim, and Drew Welton all expressed agreement for a need to develop better curves andstandardize on the process so such curves from different manufacturers would have be similar basis.

Joe Watson discussed the assignment for the TF and that the TF may decide to develop a new document or thatit may just identify a few areas that should be covered in other existing standards. He also discussed that thecriteria for such curves should be an area between lines and not just a single line because users may havedifferent tolerances for transformer temperatures, especially when the relay protection for many of the types oftransformers that can be exposed to V/Hz issues will trip a generation station off line. Also, the design of theplant, such as whether or not a generator breaker is between the GSU and generator, can significantly affect theexposure to V/Hz levels.

Kipp Yule also noted that even after a generator is tripped by a V/Hz relay, if there is no generator breaker, thetransformer will continue to have abnormal V/Hz until the generator voltage versus speed reduces by coastingdown. Also, V/Hz is a condition that all power plant transformers connected to the generator bus, such as UAT’sand Excitation transformers experience, however it is believed that most users only focus on the GSU.

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Jin Sim advised that we should review C37.91 to see if V/Hz protection is covered there or if the TF shouldreference it in any document that the TF may issue.

Two sub-groups were formed, one to focus on applications (protective relaying) and another to focus ontransformer V/Hz capabilities (how and what actually establishes the limits of the V/Hz curves provided by theOEMs, such as core design and materials utilized).

Drew Welton volunteered to lead the applications sub-group and Ramsis Girgis was volunteered to head up thesub-group on transformer V/Hz capabilities. Others who would like to work on these groups should contactDrew or Ramsis, or the Chair.

There have been two conference calls in preparation for the first meeting:

The first was held 3 May 2017 and focused on the historic curves discussed above. The consensus is that there isno such generic curve that represents the Volts per Hertz relationship to time that would cause damage to thetransformer. Each transformer has its own unique V/Hz limitation curve versus time and users should obtain thespecific V/Hz curve for the transformer with regard to setting protective relaying.

The second was held 31 May 2017 with several members of the IEEE PES Relay Committee and explained howthe Volts per Hertz curves are used to set the protection relay. This session was arranged by Russ Patterson whohad originally asked the PTSC for guidance at the S16 meeting in Atlanta, and curves to be used when reviewingexisting transformer installations. Topics discussed will be covered in future activities of the TF, and includegassing in oil, insulation thermal damage, Loaded and unloaded conditions, and both steady state and transientconditions.

It noted there was a prior TF (circa 2004), that looked into the steady state Volts per Hertz characteristics, andthe Chair requests copies of any historical notes that could be of assistance in this effort.

Several of the attachments have been used in prior conference calls, referenced in prior status reports orreviewed during this meeting, and are being gathered for reference. The following documents will be posted tothe TF’s area of the Power Transformer SC’s page on the Transformer Committee’s website.

· V/Hz Presentation by Dr. Ramsis Girgis 3/27/18· Overexcitation over time – Chris Ploetner 20041025· Draft PTSC Position Statement on Volts per Hz· EPRI Figure 2-15 Short term Overexcitation

The meeting adjourned at 4:30 PM.

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Attachment K.4.13

Meeting MinutesTask Force on Condition Assessment

Pittsburgh, PA – March 27, 2018

· The Task Force met at 9:30 AM on March 27, 2018 in the Urban Room on the 17th Floor of the OmniWilliam Penn Hotel with 59 attendees in total with 22 of the 73 WG members present. A quorum wasnot present

· Call for patents – there were no issues· The previous minutes were tentatively approved but will need to be presented for approval by email to

the members due to the lack of a Quorumo The scope presented at the meeting for discussion was “The guide covers condition assessment

and asset management methods for oil and ester fluid-immersed power transformers andreactors and their components. The Guide also includes examples of utilizing assessment data toestimate the reliability of individual transformers and reactors or a fleet population oftransformers or reactors to enable users and asset managers to identify candidates for theplanning of maintenance, refurbishment or replacement activities as well as sparestrategies. This Guide does not cover the interpretation of test data that may be covered inother Standards or Guides.”

o After considerable discussion, the scope was shortened to “The guide covers conditionassessment of oil and ester liquid-filled transformers and reactors and their components.”

· During discussion of the Scope, Don Platts questioned whether asset management should be mentionedin the Scope since the general topic may be covered by other IEEE Standards or Guides, but the purposeof this guide is to collect data to be used for asset management purposes. The Guide will not coverasset management processes in any detail that is covered by any existing IEEE Standards or Guides butshould present collected data for use in asset management activities. The group consensus was toremove references to asset management in the document stated scope.

· The shortened scope was approved with 31 out of the 38 members present voting, however, a Quorumwas not present so the issue will need to be revisited.

· After the scope was reduced to only a reference to condition assessment, Don Platts questionedwhether there was any need for this document because the scope of C57.140, the IEEE Guide forEvaluation and Reconditioning of Liquid Immersed Power Transformers, includes Condition Assessment.A later review of C57.140 shows that “Condition Assessment” is not included in the Scope or Purpose ofC57.140, but there is a chapter in that document titled “Condition Assessment and Reconditioning.” Thetext in that chapter of C57.140 may contain some information that should be incorporated ortransferred into this new Guide, but it does not cover several areas that are planned for this newdocument. Another presentation will be made at the next meeting, or a future meeting to furtherexplain the need and planned general scope and purpose of this document

· The question of continuing work on this project was presented to the group and the consensus was thatthere is a clear need for the document and that we should continue the work. We should however, havemore group discussions and a clear understanding by the members of the TF before the official scopeand purpose are determined and the PAR is requested.

· The meeting adjourned at 10:45 AM.

Kumar Mani, PE/ Joe Watson

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Annex L Standards Subcommittee – Unapproved Minutes

March 28th, 2018Pittsburgh, PAUSA

Chair: Jerry MurphyVice Chair: Kipp YuleSecretary: Daniel SauerStandards Coordinator: JimGraham

The Chair, Jerry Murphy opened the meeting calling for a show of members to establish quorum whichwas met.

L.1 Meeting Attendance

The Standards Subcommittee met on Wednesday, March 28th, at 4:34 PM EDT. A show of handsindicated 25 of 44 members in attendance at the beginning of the meeting which met the quorumrequirement. Overall the attendance roll showed there were 103 attendees, 32 members, 71 guests,including 13 that requested membership upon tabulation of the circulated rosters and will be reviewed foreligibility. Furthermore, three attendees signed the paper roster but did not use the RFID system, andeight attendees used only the RFID system and not the paper roster. Jim Graham moved to approve theagenda with second by Vinay Mehrota; motion was carried with unanimous consent. Jerry then requesteda review of the Louisville minutes; motion was made by Ajith Varghese and seconded by Vinay Mehrota;motion was carried with unanimous consent.

L.2 Chair’s Remarks

L.3 Working group reports

L.3.1 Continuous Revision of C57.12.00-2015 – Steve SnyderThe purpose of this WG is to compile all the work being done in various TF/WG/SC’s for inclusion

in the continuous revision of C57.12.00 in a consistent manner. This WG coordinates efforts with thecompanion Standard C57.12.90 so that they publish together.

The current standard was approved by the IEEE-SA Standards Board on December 5, 2015, with anofficial publication date of May 12, 2016. The standard is good for 10 years, but is under continuousrevision and will be next balloted when sufficient new material is available. The PAR which covers theongoing continuous work on the document is good through December 31, 2021.

As agreed at the Fall 2016 Standards Subcommittee meeting, any new material provide to me forinclusion in the next revision, will first be presented to this subcommittee for the “official” vote ofapproval. At this time no new material has been submitted to me since the Fall 2017 meeting.

Respectfully submitted by Steven L. Snyder, WG Chair, on March 28th, 2018.

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L.3.2 Continuous Revision of C57.12.90-2015 & Cor. corrections – Steve AntoszINTRODUCTIONThis is a working group by committee of task forces, for continuous revision of C57.12.90. The purposeof the WG is to keep track of the work being done in various TF/WG/SC’s for inclusion in the continuousrevision of C57.12.90 in a consistent manner.

SUMMARYThe revised document was published in March 2016 as IEEE Std C57.12.90-2015. Shortly after thedocument was published, one error and one omission was discovered, so a Corrigendum was done andpublished on March 23, 2017. It is IEEE Std C57.12.90™-2015/Cor 1-2017 (Corrigendum to IEEE StdC57.12.90-2015) Standard Test Code for Liquid-Immersed Distribution, Power, and RegulatingTransformers Corrigendum 1: Editorial and Technical Corrections.

STATUSA new PAR was submitted by me in October 2017 and it is on the agenda for NESCOM’s next meetingin December.

FUTURE REVISIONS AND PENDING WORKAs agreed at the Fall 2016 Standards Subcommittee meeting, any new material provided by the variousTask Forces to this WG Chair for inclusion in the next revision, will first be approved by the responsibletechnical subcommittee (Diel Test, PCS, Dist, IL, etc) and then presented to the Standards Subcommitteefor the “official” vote of approval.

Since this is a continuous revision document, there continues to be ongoing work in the various TaskForces.

Changes already approved for the next revision:

· Changes to 9.3.1 Wattmeter-voltmeter-ammeter method from Mark Perkins’ PCS TF for Revision ofC57.12.90. Final survey approved in Nov 2015 in both the TF and PCS. The following text is to beadded just prior to Figure 18 for three-phase transformers:

An alternate method for either single phase or three phase transformers is to provide capacitivecompensation for the transformer impedance at the terminals of the transformer so that the AC sourceneed only supply the real power for the test. Figure 18 shows the apparatus and connections for asingle phase transformer for this alternate method and the method can also be used in a three phaseconfiguration. In this case, the wattmeter will measure the real power of the transformer under testplus the power of the capacitors, which will be very small compared to the power in the transformer.The load loss in the transformer is determined by subtracting the loss in the capacitors from themeasured loss. For modern oil film capacitors, a loss of 0.2 watts per actual kVAR may be usedunless a specific capacitor bank loss is known. This method requires a separate CT or set of CTs atthe transformer for setting the current and measuring the transformer impedance. The advantage ofthis alternate method is that the phase angle between the voltage and current at the wattmeter is low(closer to zero degrees) due to the capacitor compensation, so any phase angle errors in the lossmeasurement circuit are much less significant.

· Add in subclause 10.3.1 and 10.3.1.1 Lightning Impulse, the following words in red; by PierreRiffon’s WG Revision to Impulse Test in Dielectric Test Subcommittee. Submitted on 11/4/2016.

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These subjects have been surveyed within the Dielectric Tests SC and within the TF. The 4th surveygot a 100% approval rate.

10.3.1 Impulse tests shall be made without excitation. The impulse waveshape parameters such aspeak voltage, front time and tail time are determined on the test voltage curve which is obtained afterhaving processed the recorded curve using the test voltage function method, as defined in IEEE Std.4.

10.3.1.1 Full-wave testThe test wave rises to crest in 1.2 µs and decays to half of crest value in 50 µs from the virtual timezero. The crest value shall be in accordance with the assigned basic impulse insulation level (BIL),subject to a tolerance of ± 3%; and no flashover of the bushing or test gap shall occur. The toleranceon virtual front time should be ± 30%, and the tolerance on time to half of crest should be ± 20%.However, as a practical matter, once the manufacturer has proven that they have test equipmentlimitations, the following shall be considered:a) If the standard impulse shape cannot reasonably be obtained because of low winding inductance orhigh capacitance to earth and the resulting impulse shape is oscillatory so that the relative overshootmagnitude exceeds 5 % then the front time may be increased to reduce the overshoot amplitude. In allcases, the front time shall not exceed 2.5 µs regardless of the overshoot amplitude.Note 1: The overshoot can be reduced by increasing the front resistor value of the impulse generator.The use of low inductance connections between the impulse generator and the tested transformer arealso recommended.

· New wording in subclause 10.3.1.3 Chopped-wave test, approved following the Louisville meeting inFall 2017.

10.3.1.3 Chopped-wave testA chopped wave is inherently a full lightning impulse wave, except that the crest value shall be at therequired level and the voltage wave shall be chopped at or after the required time to flashover (time tochopping) but not later than 6 μs after virtual origin. The virtual front time of the chopped wave may bedifferent than the virtual front during a full-wave test because of the presence of the chopping gap.Nevertheless, the tolerance on the virtual front time for the chopped-wave test should remain as definedfor full-wave test.The gap or other equivalent chopping device shall be located as close as possible to the terminals of thetransformer without disrupting its electrical field distribution. The distance between the chopping deviceand the test object shall not exceed a lead length greater than the total height of the transformer (tank +bushing). The impedance between the tested terminal and the grounded end of the chopping device shallbe limited to that of the necessary leads. The voltage zero following the instant of chopping should occurwithin 1 μs. However, for some winding and transformer designs (particularly low-voltage windings ofhigh stray capacitance, layer windings, high capacitance windings, UHV transformers requiring largeclearances, etc.), the circuit response after chopping may not be oscillatory it may be overdamped or maycollapse to zero with a lower frequency (slower voltage collapse). For such cases, the time interval to thefirst voltage zero after the instant of chopping may be significantly greater than 1 μs and this deviationshall be accepted if the chopping gap is located as described above.In order to have a common procedure for the determination of the steepness of voltage collapse, thesteepness of the voltage collapse shall be the time interval between the instant of the voltage chopping tothe instant where the applied voltage is 20% of the voltage level at instant of chopping. This time intervalshould be equal to or less than 0.8 µs.

Only for cases…(this paragraph and the last paragraph remain as they are in the 2015 edition, includingthe three NOTES)…"

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pending work· Possible future addition of a new clause for a Load Tap Changer Performance Test, from Hakan

Sahid (formerly Mark Perkins) PCS TF for Revision of C57.12.90.

This TF also is considering to add a clause that a transformer be tested with the same insulation liquidthat it will use in service. For example, a unit to be filled with ester liquid should (or shall?) not betested with mineral oil in the factory.

· Future revision to subclause 10.8.2 from Bill Griesacker’s (formerly Bertrand Poulin) TF regarding alimit of pressure applied inside a transformer tank during induced voltage test. Ongoing workcontinues and is nearing an end.

· Other possible revisions to subclauses 10.2 to 10.4 from Pierre Riffon’s TF for revision of impulsetests. Ongoing work continues.

· Other possible revisions to subclauses 10.5 to 10.10 from Bill Griesacker’s TF (formerly BertrandPoulin) for revision of low frequency tests. Ongoing work continues. A TF has been formed to lookat reducing the limit for PD level Failure Detection in 10.8.5.

· Possible additions from Phil Hopkinson to detect improper core grounding in 10.7.7 for SpecialInduced-Voltage partial discharge Test for distribution and class I power transformers with a woundcore, L-H winding construction and HV >15 kV. PD is to be measured as apparent charge in pico-coulombs (pC). One reading shall be made at the end of each interval. Minimum test duration andapplication of voltage:1. Voltage shall be raised to 100% of rated volts for 30 seconds and PD shall be measured and

recorded.2. Voltage shall be raised to 110% of rated volts for 30 seconds and PD shall be measured and

recorded.3. Voltage shall be raised to 150% of rated volts, held for 1 minute and PD shall be measured and

recorded.4. Voltage shall be lowered to 140% of rated volts, held for 1 minute and PD shall be measured and

recorded.5. Voltage shall be lowered to 130% of rated volts, held for 1 minute and PD shall be measured and

recorded.6. Voltage shall be lowered to 120% of rated volts, held for 1 minute and PD shall be measured and

recorded.7. Voltage shall be lowered to 110% of rated volts, held for 10 minutes and PD shall be measured and

recorded.

Respectfully submitted by Stephen Antosz, WG Chair, on March 28, 2018

L.3.3 Corrigenda for C57.12.70 – Steve Shull1. Steve called the meeting to order and introductions were made.2. Quorum with 8 of 11 members were present at first call.3. Confirmation of the essential patent statement and no response.4. Approval of agenda for this meeting. Lee Matthews motioned & Dan Mulkey seconded; motion

carried with unanimous approval.5. Approval of minutes of the previous meeting Lee Matthews motioned & Dan Mulkey seconded;

motion carried with unanimous approval.6. Old Business

a. Steve explained to the working group that a copy of the annex was sent out to members onMarch 13th and had received no comments. Steve asked all members and guests forconsideration of approval to ballot on the dispersed copy.

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b. Tyler Morgan had some minor corrections to be made to the diagrams and titles of thosediagrams. Jason Varnell had additional comments for more minor diagram title corrections.As the discussion continued, it was clear the document was not ready to ballot. After a lot ofdiscussion it was decided that due to the need to revise the main standard document before2021, the current corrigenda would not move quickly enough to allow for time to revise thecurrent main standard document before it was withdrawn. This being the case Steve suggestedthat we withdraw the corrigenda PAR and resubmit a PAR for total document revision.

c. Dan Mulkey made a motion to withdraw the corrigenda PAR seconded by Jason Varnell andafter extensive discussion the motion was approved. Due to other commitments, Steve Shullwithdrew from the Working Group Chair position. Jerry Murphy as Sub-Committee Chairappointed Jason Varnell to assume the position of chair. Jason will submit a new PAR beforethe fall meeting.

7. New Business – none.8. Next meeting on October 14, 2018 in Jacksonville, Florida9. Steve adjourned the meeting at 4:15pm.

Respectfully submitted by Jerry Murphy, on March 27th 2018.

L.3.4 WG Standard Transformer Terminology C57.12.80Chair’s Remarks:The Chair opened the meeting at 4:45 p.m. on Tuesday 27 March, 2018.The chair noted the low attendance of this working group’s meeting to date, possibly due toconflicting schedules with other working groups.Attendance Roster Sign In / Quorum Check:Quorum was achieved with four of six members present.Approval of the AgendaA motion to approve the agenda was made by Fredric Friend, seconded by Lee Matthews. Themotion passed unanimously.Call for Essential PatentsA call for essential patents was made. No essential patent issues were reported.Approval of the minutesA motion to approve the Fall 2017 minutes was made by Fredric Friend, seconded by LeeMatthews. The motion passed unanimously.Unfinished BusinessA definition for wind turbine GSU transformers has not been submittedAction Item: Fredric Friend will contact Phil Hopkinson, to get a suggested wind farm GSUdefinition for working group consideration.A task force to review of existing standards for new definitions was suggested.It was proposed to check the IEEE dictionary for transformer related definitions and to ask Ms.Zaman for a word document. A volunteer to do this is needed.

New BusinessIt was suggested to make the current draft of the PC57.12.80 available to the working group forreview to stimulate more comments.Action Item: Secretary Jim Graham will arrange to post PC57.12.80 draft 1.0 on the website inthe protected area.A task force to conduct a review of existing standards for new definitions was discussed.Action Item: A request to solicit liaisons from all technical subcommittees to review theirstandards/guides for definitions which could be added to the terminology standard will besubmitted to the Standards subcommittee.

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Action Item: Lee Matthews will review the definitions included in the regulator standard(C57.15) and recommend if any should be incorporated into the terminology standard.It was suggested the working group develop a policy regarding the location of definitions inindividual standards vs in the terminology standard. No decisions were made.The meeting was adjourned at 5:15 p.m.Next meeting - October 15, 2018 at Jacksonville, FL

Respectfully submitted by Jim Graham, March 27th, 2018.

L.3.5 IEEE / IEC Cross ReferenceThere was no meeting at Pittsburgh, but it is planned to meet in Jacksonville.

L.4 Old BusinessThere was no old business discussed.

L.5 New Business

L.5.1 C57.144 IEEE Guide for Metric Conversion of Transformer StandardsThere was discussion about this document as it either needs to be worked on to be brought to acurrent revision or it can expire. Jim Graham explained the difference between a withdrawnstandard which is actively removed from publishers and an expired standard which is stillavailable from some publishers but it is noted that the information may be out of date. Themembers decided to let this document expire.

L.5.2 Standards Sub-Committee LeadershipKipp Yule announced that he is stepping down from the Vice Chair position. The Chair: JerryMurphy announced that the Secretary Dan Sauer would progress to Vice Chair. The secretaryposition was opened as a result. Following the meeting, Marcos Ferreira volunteered for theSecretary Position and was accepted by the Chair Jerry Murphy.

L.5.3 C57.152 Field Test GuideThe status of this document was questioned. It is OK for now, but a revision should beenvisioned in the near term future. It was noted that Jane Verner has resigned as the chair of thisdocument. Kipp Yule stated that this document was originally envisioned as a continuousrevision document in the same fashion as C57.12.00 & C57.12.90. This document will be on theagenda for a new revision under new business at the next meeting.

L.5.4 What goes where?Kipp Yule asked about the status of the What Goes Where study. The document will becirculated to all Sub-Committee chairs for comment and any necessary revisions will bepresented at the next meeting in the fall.

L.6 Adjournment

The meeting and was adjourned at 5:14 PM EDT.

Respectfully submitted by Daniel M Sauer, Standards SC Secretary

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Annex M Subsurface Transformers & Network Protectors Subcommittee

March 28, 2018Pittsburgh, PAChair: Dan MulkeyVice Chair: George Payerle

M.1 Meeting Administration

Introductions – The meeting was called to order at 11:00 AM Wednesday, March 28, 2018 in theMonongahela Room of the Omni William Penn Hotel in Pittsburgh, PA. Introductions were made, andsign-in sheets were routed. The meeting agenda was approved.Quorum – The members were listed on the screen and by a show of hands, it was determined that therewas a quorum in attendance.Members and Guests --There were 26 members and 33 guests in attendance. Their names can be foundin the AM system. Five guests requested membership.Approval of Minutes – The minutes from the Fall 2017 meeting in Louisville, KY were approved. Theywere motioned for approval by Alex Macias and seconded by Brian Klaponski. The subcommitteeapproved these without opposition.

M.2 Working Group and Task Force Reports

M.2.1 C57.12.23 Working Group Report – Single-Phase Submersible TransformerAlan Traut, Chairman, Jermaine Clonts, Secretary.Revision Due Date: 3/19/2019PAR Approval Date: 8/21/2014PAR Expiration Date: 12/31/2018

Introductions – The meeting was called to order and everyone was asked to introduce themselves. Rosterswere sent around

At the start of the meeting the working group was asked to disclose any essential patent claims. Noessential patent claims were disclosed.

Quorum – We had 68 attendees 28 members present out of 40 active members, which gave us enoughmembers to establish a quorum.

Approval of agenda - Edward Smith made a motion to approve the agenda, Dan Mulkey seconded themotion. The approval of the agenda was unanimous.

Approval of meeting minutes - Edward Smith made a motion to approve the Fall 2017 meeting minutes,Alejandro Macias seconded the motion. The approval of the meeting minutes was unanimous.

Chair Report – Alan talked about when the PAR expires and how long we have to complete our work.PAR expires December 31, 2018. 10-year life cycle of the standard is December 31, 2019. In addition, thedocument must be submitted to Revcom by October 15,2018 or a PAR extension must be requested.

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Old Business

Alan Traut asked the working group if we should change the year reference in regards to IEEE Standard386. The working group agreed to change the year reference to the current revision by erasing the date.

Alan Traut reviewed the current draft which showed comments from previous meetings and reviewedwhich items have been changed in the current revision. Edward smith made a motion to send draft six ofthe document for C57.12.23 to ballot. Dan Mulkey seconded the motion. The draft was unanimouslyapproved to send to ballot.

A ballot resolution committee was formed and is composed of the following members. Alan Traut, DanMulkey, Giuseppe Termini, Josh Verdell, Fred Friend and Jermaine Clonts. Brian Klaponski made amotion to give the ballot resolution committee the authority to make changes to the document and usetheir judgment for which details need to be brought back to the working group for discussion. MikeHardin seconded the motion. This was unanimously approved.

New Business

Discussion took place about which items should be included in the next revision. Brian Klaponskimentioned defining a leak test in detail. Mike Hardin mention adding horizontal tanks to the standard.Dan Mulkey mentioned that rectangular tanks fits within the scope of this document.

The next meeting will be held in Jacksonville, Florida at the Fall 2018 meeting.

M.2.2 Continuous Revision of C57.12.24 – Three-Phase Submersible TransformersGiuseppe Termini, Chairman; George Payerle SecretaryApproved: 12/7/2016Revision Due Date: 12/7/2026PAR Approval Date:PAR Expiration Date: N/A

The meeting was called to order at 1:45 pm in Conference Level Room A at the Omni William Penn Hotelin Pittsburgh, PA on Tuesday, March 27, 2018. The chair presented an agenda. Kent Miller moved toaccept the agenda and Al Traut seconded. The motion passed unanimously.

Introductions were made. The Chair stated that the membership stands at 33. There were 27 memberspresent at this meeting so there was a quorum. There were 44 guests in attendance. 12 guests requestedmembership. George Payerle acted as recording secretary. The chair stated that adjustments to themembership will be made based on attendance.

The Chair asked if there were any patent claims that needed to be mentioned. There were none.The Chair presented the meeting minutes of the previous meeting in Louisville, KY. Brian Klaponski movedto accept the minutes as presented. Kent Miller seconded. The motion passed unanimously.

The Chair stated that there was an addition to the agenda to include a presentation by Bob Kinner oncorrosion resistance.

The latest revision of C57.12.24 was published in 2016. At this time, the WG is acting as a task force andconducting a continuous improvement discussion in preparation for requesting a PAR. The purpose of thetask force is to identify topics and changes for the next revision.

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Bob Kinner presented information on corrosion resistance and cathodic protection. The presentation wasfollowed by a group discussion. The Chair thanked Bob Kinner for his presentation. He also thanked BrianKlaponski who arranged to have Bob and Patrick Ho do presentations at both C57.12.24 and C57.12.40WG meetings. Bob’s presentation will be sent to the WG attendees.

The action items from the previous meeting in Louisville were reviewed and discussed. The Chair statedthat Paul Chisolm reviewed the comments that were received from the last balloting process and there areno issues that needed to be considered in the next standard revision. Jeremy Van Horn reviewed Table 6of the standard regarding the minimum material thickness of the tank and suggested that the Metric toEnglish conversion values should be reevaluated. The Chair suggested Jeremy to review the conversionvalues against the requirements of IEEE standard C57.144, Guide for Metric Conversion of TransformerStandards and report the results at the next WG meeting. Israel Barrientos agreed to work with Jeremy onthis effort.

Also, at the last WG meeting in Louisville, a suggestion was made to create a material compatibility tablebetween the transformer tank and the hardware and components that are either attached or welded to thetank; e.g.: parking stands, drain valves, PRVs, etc. Tom Dauzat and Babanna Suresh worked on suchcompatibility table which was presented for discussion. Tom stated that GE and Florida Power & Light dida tremendous amount or research and testing on material compatibility. The stainless grades that seem tobe used the most are 304L, 316L, and 409. However, there are some limitations on the use 409 steel dueto the availability in sheet sizes used for the construction of larger transformer units. Mike Hardin statedthat he has worked with a lot of 409 steel with good results and said that the key in using 409 steel is toproperly apply the paint coating. Dan Mulkey also reported similar good results using 409 steel at PG&E.

Alex Macias made a motion to continue to work on and expand the material compatibility table to perhapsbe incorporated in the next revision of the standard. Said Hachichi seconded, and the motion was approvedunanimously. The Chair stated that the work on the material compatibility table may also apply to theC57.12.23 and C57.12.40 standards. Tom Dauzau agreed to the lead the effort to work on and expand thetable to be reviewed at the next meeting. The Chair suggested that other individuals from both utilities andmanufacturers should assist Tom. The following individuals agreed to assist: Babanna Suresh, MikeThibault, Anil Dhawan, John Vartanian, Will Elliott, Jim Spaulding and Brian Klaponski.

Tom Dauzat suggested that the utilities volunteers should forward him information related to hardware andcomponents that are either attached or welded to the transformer tank via email: Thomas.dauzat@ge.com.He also suggested to send pictures of the actual components that are attached to the tank.

The meeting was adjourned at 3:00 PM. The next meeting will be in Jacksonville, FL on October 16, 2018.

M.2.3 Continuous Revision of C57.12.40 – Secondary Network TransformersBrian Klaponski, Chairman; Giuseppe Termini, SecretaryRevision Due Date: 12/31/2027PAR Approval Date:PAR Expiration Date: N/A

The group met on Tuesday, March 27, 2017 at 11:00 am with 19 members and 27 guests. Six (6)guests requested membership.

The Chair stated that the C57.12.40 standard was successfully published in September 2017.The group is not technically a Working Group since there is no active PAR.

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The purpose of this meeting was to continuously revise the standard. Because the new revisionof our standard was just published, this meeting was used to have a discussion in regards to thedirection of our next revision.Patent issue was discussed. There is a potential patent issue which was mentioned. The Chairdeclared that there are three patents that could impact this WG; GE, ABB, and Carte each have apatent regarding a high energy tank. No discussion has taken place as yet.

An agenda was presented and approved and introductions were made.Time frame and plan of group was discussed. When the standard went to ballot, a corrosionexpert sent in a negative ballot stating that some of the corrosion terminology was not in propertechnical language. It was discussed that the working group should take this comment underconsideration and determine if anything needs to be changed or improved in the standard sincecorrosion is a major concern for many users of this equipment.

The minutes of the October 31, 2017, meeting in Louisville, KY were reviewed. George Payerle(Carte) made a motion to approve those Minutes. Jim Dorsen (Alabama Power) seconded themotion and the minutes were approved unanimously.The remainder of the meeting consisted of a presentation on corrosion by Patrick Ho, fromPowertech Lab. There was discussion on the information and a question and answer sessionfollowed the presentation.

The meeting was adjourned at 12:15 pm with the next meeting set for Jackson, FL in October2018.

M.2.4 -C57.12.44 Working Group Report – Secondary Network ProtectorsMark Faulkner, Chairman, Alex Macias, SecretaryRevision Due Date: 12/31/2024PAR Approval Date: 3/26/2015PAR Expiration Date: 12/31/2019

Meeting Date: 03/26/2018 Time: 4:45– 6:00Meeting Place: Omni William Penn Hotel, Conference Center B (CL), Pittsburgh, PennsylvaniaMeeting Administration:

· The meeting was called to order at 4:48 PM· Attendance

- Rosters passed out- Roster Scanned and Sent to DHM

· Introductionso Membership Displayed

· Essential Patents Disclosure- None cited

· Quorum Determination- 30 individuals attended the meeting

o Membership stands at 17; members present 13o Quorum met

- Those that have requested membership and have attended two consecutive sessions will bemembers at next meeting.

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o 6 Membership Requests will be reviewed· Approval of the last meeting minutes

- Mark Faulkner presented the meeting agenda to the WG for review and acceptance.o Brian Klaponski motioned to approve the meeting agenda as presentedo Lee Welch, seconded the motiono Motion was approved unanimously; No one opposed.

· IEEE patent presentation presented – none reported.

Meeting address items left for discussion from the New Orleans

Item #1 – Draft 1 of Standard· A copy will be sent for review/comments to WG and Editorial Review· All remarks will be included Draft 2 and sent out prior to next meeting and reviewed in the next

meeting.Item #2 – 7.5 percent minimum trip

· Mark investigated and found nothing on the origins of the 7.5 percent minimum trip.o ConEd confirmed that their latest specification revision 21 is at 10%, however noted that

their refurbished network protectors min. trip required was relaxed in this revision due toage of components used in this process, in order to provide some margin.

· This was followed with a general discussion among the manufacturers and end users; includedrevisions of ConED 5103 revision 19, 20 and 21. It concluded that the 7.5% will remain aswritten in the standard.

Item #3 – Terminal Markings· Discussion to either keep terminal pad drawing in body of standard or annex; decision to remain

in standard.Item #4 – Dimensions

· Dan Mulkey stated the metrics dimensions need correcting· Mark/Doug to review and finalize all measures· Doug to redrawn all illustrations to equivalent font and line weights

Item #5 – Inclusion of 600V· Igor requested table 3 include 600V

o Request accepted and updatedItem #6 – New Business (HV network protector – greater than 600V)

· Lee Welch asked a general question in the meeting about utilization of large MV networkprotectors by end user or being fabricated by manufacturers

o This was tabled for future revision consideration of standard.Next meeting:Jackson, FL.Oct. 14th-18th, 2018

M.3 Old BusinessNone

M.4 New BusinessBrian Klaponski suggested that we petition Powertech that Patrick Ho be allowed to continue toattend the Transformers Committee Meetings. George Payerle is to write a letter to that effect.

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Brian also suggested that the rule on photography should not apply to our meetings. GaryHoffman and Malia Zaman weighed in on the issue as well. The end result of the discussion wasthat if no standard is being discussed there is no problem with recording. So no pictures in WG,pictures ok in a TF.

Mike Thibault said that he wants the SC STNP to work with the Distribution SC on the Guide forMonitoring distribution transformers. It is a pre-par task force. The details will be worked out ina WG. Jim Dorsten moved that this SC co-sponsor a guide for monitoring distributiontransformers with the distribution committee. Mike Thibault seconded. The motion passedunanimously. Dan said that the new group will have to report to both Subcommittees. GaryHoffman asked that someone from SC STNP become an officer in the Distribution SC. Anyoneinterested should see Gary.

The meeting was adjourned at 12:15 with the next meeting to take place on October 17, 2018