Technical Data Book of Ngr

7/23/2019 Technical Data Book of Ngr

http://slidepdf.com/reader/full/technical-data-book-of-ngr 1/54



TECHNICAL DATABOOK OF NGR

INDEX

SL.No. Description Docume

A DVC’s NIT PCA.CD-001.E345E

B RINFRA’s Technical Specification REL-DVCRTPP-CE

C Approved Vendor Drawings/Document

1Approved Drawings/Document of

Neutral Grounding Resistor (NGR)

a)GTP of NGR

REL-DVCRTPP-NE

REV-01 b)GA of 3.3KV NGR

REL-DVCRTPP-NEREV-01

c)GA of 11KV NGR

REL-DVCRTPP-NEREV-01

D) RINFRA’s Clarifications of hold onapproved GTP of NGR

EDCON/ELEC/RTP16.11.09




SECTION-A

DVC’s NIT



DCPL-K6

VOLUME : II-F/2

SECTION-I

TECHNICAL SPECIFICATION

FORNEUTRAL GROUNDING RESISTOR



DCPL-K6

CONTENT

CLAUSE NO. DESCRIPTION PAGE NO.

1.00.00 SCOPE OF SUPPLY V.IIF-2/S-I : 1

2.00.00 CODES AND STANDARDS V.IIF-2/S-I : 1

3.00.00 DESIGN CRITERIA V.IIF-2/S-I : 2

4.00.00 SPECIFIC REQUIREMENTS V.IIF-2/S-I : 2

5.00.00 TESTS V.IIF-2/S-I : 4

6.00.00 SPECIAL TOOLS & TACKLES V.IIF-2/S-I : 5

7.00.00 DRAWINGS, DATA AND MANUALS V.IIF-2/S-I : 5

ATTACHMENTS

ANNEXURE-A RATINGS AND REQUIREMENTS V.IIF-2/S-I/Annx-A : 7



DCPL-K6

VOLUME : IIF-2

SECTION-I

NEUTRAL GROUNDING RESISTOR

1.00.00 SCOPE OF SUPPLY

1.01.00 Type, rating and connection of the equipment listed below are detailed in Annexures. The equipment shall be offered in strict compliance with same.

1.02.00 22.13 Ohms, 11000 Volts, 300 Amps for 10 seconds Neutral GroundResistor Six (6) Numbers.

6.64 Ohms, 3300 Volts, 300 Amps for 10 seconds Neutral Grounding ResiSix (6) Numbers.

1.03.00 Each Resistor shall be furnished complete with :

a) Fittings and accessories.

b) Auxiliary Equipment

c) All supporting steel work and hardwares.

1.04.00 One set of Special Tools and Tackles.

1.05.00 Mandatory Spare Parts.

1.06.0 All relevant drawings, data and instruction manuals.

2.00.00 CODES AND STANDARDS

2.01.01 All equipment and materials shall be designed, manufactured and testeaccordance with the latest applicable Indian Standards (IS) and IEC exc

where modified and/or supplemented by this specification.

2.01.02 Equipment and material conforming to any other standard, which ensuequal or better quality, may be accepted. In such case, copies of the Engversion of the standard adopted shall be submitted along with the bid.

2.01.03 The electrical installation shall meet the requirements of Indian Electr



DCPL-K6

3.00.00 DESIGN CRITERIA

3.01.00 The Neutral Grounding Resistor (NGR) shall be used for non-effecgrounding of 11000 volt and 3300 volt System of the plant. NGR shalconnected between the 11000 volt winding neutral point and earth400/11.5/11.5 KV station transformers and all unit transformers. NGR salso be connected between the 3300 volt winding neutral point and eart11/3.5 KV transformers.

3.02.00 Neutral Grounding Resistor shall be used to limit the magnitude of earth fcurrent so that damage of electrical equipment is reduced, safety of personis increased and sensitive, selective earth fault protection can be provided

3.03.00 The NGR will be installed in dust prone, hot, humid and tropical atmosph All equipment, accessories and wiring shall be provided with tropical finisprevent fungus growth.

3.04.00 The rated time for the earth fault current or specified thermal current shal10 seconds.

3.05.00 The Tenderer shall quote for neutral grounding resistor with final temperaas per allowable limit due to the specified current for specified time.

3.06.00 The Resistor unit shall be air-cooled type suitable for installation at outdlocations.

3.07.00 The resistror enclosure shall be made of sheet steel and shall have minimthickness of 2 mm.

4.00.00 SPECIFIC REQUIREMENTS

4.01.00 Resistor

4.01.01 The resistor element shall be made of non-aging stainless steel or equivacorrosion resistant material having high Electrical Resistivity and temperature co-efficient of resistant.

4.01.02 The resistor unit shall consist of a no. of elements. All the elements shalmounted inside the cubicle so as to ensure ease of inspection replacement of individual element. The resistors shall be edge-wound type

4.01.03 Each Resistor element shall possess a balanced combination of bMechanical and Electrical properties over the entire intended operatemperature range without any harmful effect on the elements and taccessories



DCPL-K6

4.01.05 All element connections shall be bolted type to ensure stable resistance vathroughout the working life of the unit.

4.01.06 Wet process type brown glaze porcelain insulators shall be used supporting resistor elements. Porcelain insulators shall have high creep value suitable for heavily polluted atmosphere charged with dust particles.

4.02.00 Enclosure

4.02.01 Each neutral grounding resistor shall have structural steel work enclosedall sides and also on top by sheet steel having a minimum thickness of 2 mSuitable ventilating louvers shall be provided on sides to ensure proventilation. The louvers shall be provided with fire wire mesh to makvermin proof.

4.02.02 Each enclosure shall be self supporting, weather proof type suitableoutdoor mounting having a protection class as indicated in annexure.

4.02.03 Each cubicle shall be complete with a front access door with handles, and also a removable bolted cover. All doors and removable covers shalproperly gasketed with neoprene rubber gaskets. All cubicle door hinges sbe concealed type.

4.02.04 Each cubicle shall be complete with a suitably mounted cable end box fiwith removable gland plate for fixing cable gland. The cable size shall beindicated in the annexure. Double compression cable glands and tinned colugs shall be provided.

4.02.05 Each cubicle shall be provided with suitable base channels for direct boto the foundation at site. All necessary galvanised bolts, nuts, washers shall be supplied by the Tenderer for installation of Cubicle at site.

4.03.00 Cubicle lamp and sockets

4.03.01 Each cubicle shall be provided with 5A, 3 pin plug socket and door-swcontrolled cubicle illumination lamp.

4.03.02 Two pole switch fuse unit shall be provided for receiving 240 V single ph

AC supply for cubicle lamp and illumination circuit.

4.04.00 Wiring

4.04.01 All internal wiring between equipment and terminal block shall be carriedby PVC insulated 650 V grade 2.5 Sq.mm Stranded copper conductor wire

4 04 02 All wiring shall be suitably ferruled with corresponding wiring identifica



DCPL-K6

4.05.00 Grounding

4.05.01 All parts of enclosure, supporting structures, equipment frames etc. shalproperly grounded at two points separately.

4.05.02 Each cubicle shall be completed with two (2) nos. ground pads, tapped hand bolts suitable for connection of 75 x 10 mm galvanised steel flats.

4.06.00 Painting

4.06.01 All surfaces shall be sand blasted, pickled and grounded as requiredproduce a smooth, clean surface free of scale, grease & rust.

4.06.02 After cleaning, the surfaces shall be given a phosphate coating followed bcoats of high quality primer and stoved after each coat.

4.06.03 The equipment shall be finished with two coats of approved shade as stain th annexure

4.06.04 Sufficient quantity of touch-up paint shall be furnished for application at site

4.07.00 Auxiliary equipment-Current Transformer (CT)

4.07.01 Neutral bushing current transformers shall be furnished when specified inannexure.

4.07.02 Current transformer shall be mounted inside the cable box with remova

arrangement

4.07.03 CT secondary leads shall be wired up to the terminal blocks.

5.00.00 TESTS

5.01.00 Routine Tests

Each equipment shall be completely assembled, wired, adjusted and rou

tested as per relevant standards at manufacturer's works. The tests sinclude:

5.01.01 Resistance measurement

5.01.02 Voltage measurement

5 01 03 Insulation resistance measurement



DCPL-K6

5.03.00 Test Witness

5.03.01 All tests shall be performed in presence of Owner/Purchaser's representaif so desired by the Purchaser.

5.03.02 The Contractor shall give at least seven (7) days advance notice of stests.

5.04.00 Test Certificates

5.04.01 Certified copies of all tests carried out at works and at site shall be furnisin six (6) copies for approval of the Owner/Purchaser.

5.04.02 Equipment shall be dispatched from works only after receipt Owner/Purchaser's written approval of shop test reports.

5.04.03 Type test certificate on equipment shall be furnished along with the tendecase the Type Test Certificates of identical equipment of the offered itemsnot submitted, the bidders shall have to conduct the Type test on the offeequipment before delivery free of charge to the Purchaser. Type performed beyond years (5) time are not acceptable.

6.00.00 SPECIAL TOOLS & TACKLES

6.01.00 A set of special tools & tackle which are necessary or convenient for erectcommissioning, maintenance and overhauling of the equipment shall

supplied.

6.02.00 The tools shall be shipped in separate containers, clearly marked withname of the equipment for which they are intended.

7.00.00 DRAWINGS, DATA AND MANUALS

7.01.00 To be submitted with the Bid

7.01.01 Scheme showing series/parallel combination of resistor elements.

7.01.02 Bill of Materials.

7.01.03 Dimensional general arrangement drawings showing constructional featuetc. along with necessary foundation plan.

7 01 04 Cable termination details



DCPL-K6

7.02.01 Dimensioned General Arrangement drawings of cubicle showing disposof all Electrical Equipment such as C.T., resistor elements, cable terminaetc. inside the cubicle.

7.02.02 Consolidated Bill of Materials.

7.02.03 Foundation Plan and loading of cubicle.

7.02.04 Connection/wiring diagram of the whole system.

7.02.05 Erection drawings of cubicle and resistor elements.

7.02.06 Transport/shipping dimension and the dimension of space required handling various parts for maintenance.

7.02.07 Data Sheet and technical leaflets on each piece of equipment shallfurnished.

7.02.08 Instruction manuals for the complete system, clearly indicating the safeatures of each equipment shall be furnished.

7.03.00 The Bidder may note that the drawings, data and manuals listed are minimrequirement only. The Bidder shall ensure that all other necessary write-ucurves and information required to fully describe the equipment offered submitted with the bid.



DCPL-K6

ANNEXUR

RATINGS AND REQUIREMENTS

1.0 General

1.1 Applicable standard : IEEE-32

1.2 Service : Outdoor, free standing

1.3 Rated system Voltage& allowable variation : 11KV±10%

3.3KV±10%

1.4 Rated frequency andallowable variation : 50Hz±5%

2.0 Rating

2.1 Rated Voltage KV : 11KV & 3.3KV

2.2 Rated current at rated time duration Amp : 300A

2.3 Rated time duration Sec. : 10

2.4 Resistance in design ambient temp. Ohm : 22.13Ω & 6.64Ω

2.5 Allowable Tolerance in resistance value% : ±10

2.6 Design ambient Temperature ° C : 50

2.7 Temperature rise of resistor °C : 350

Temp rise of Enclosure °C : 30

2.9 Insulation class of insulating material : Over 220°C Class C

2.10 Basic Insulation level and system insulation class :

11KV 3.3KVSystem insulation class forline end & ground end KVrms : 75/28 KV 40/10KV

(peak/r.m.s) (peak/r.m.s)Insulation level(applie1min. power frequency potential) KVrms : 75/28 KV 40/10KV

(peak/r.m.s) (peak/r.m.s)3 0 NGR & NGR Cubicle



DCPL-K6

ANNEXUR 3.3 Enclosure material : Sheet steel

3.4 Min.Thickness of aluminium sheet mm : 2

3.5 Enclosure protection class : IP33

3.6 Finish paint of interior & exterior :

a) shade as per IS-5 : LATER

b) Base : LATER

3.7 Terminal arrangement : Through cable

3.8 Type & size of cable to be terminated : 2-1/C-70sq. mm XLPE

4.0 Insulators

4.1 Type : Support insulator

4.2 Materials : Porcelain

4.3 Bushing rating KVrms : 12 KV & 3.6 KV

4.4 Creepage distance mm : 31 MM/KV

5.0 Current Transformer

5.1 Purpose : Restricted earth fault &standby earth fault

5.2 Type : epoxy resin cast

5.3 Reference standard : As per IS

5.4 Quantity Nos. : As per requirement

5.5 Rated Voltage KVrms :

5.6 Current ratio : 300/1A & 150/1A

5.7 Accuracy class & ALF : 5P20

5.8 Burden VA :




SECTION-B

RINFRA’s TECHNIC

SPECIFICATION



Technical Specification forNeutral Grounding Resistor

R

RAGHUNATHPUR THERMAL POWER P[PHASE-I]

2X600 MW


FORNEUTRAL GROUNDING RESIST

DOCUMENT NO. : - REL-DVCRTPP-CEE-211-P-6

REVISION NO. : - 0

RELIANCE ENERGY LIMITED

H-146/147, SECTOR-63NOIDA (U.P) – 201301

DAMODAR VALLEY CORPORA

DVC TOWERS, V.I.P. ROADKOLKATA-700054, WEST BENGA




R

DOCUMENT CONTROL SHEET

PROJECT : RAGHUNATHPUR THERMAL POWER PR2X600 MW

CLIENT : DAMODAR VALLEY CORPORATION LIM

DOCUMENT TITLE : SPECIFICATION FOR NEUTRAL GROUN

DOCUMENT NO. : REL-DVCRTPP-CEE-211-P-6081

REVISION NO. : 0

ENDORSEMENTS




R

OVERALL CONTENT

SECTIONS DESCRIPTION

PART - I

SECTION-1 COMMERCIAL EVALUATION FORMAT

SECTION-2 ITB AND DRAFT CONTRACT AGREEMENT

SPECIAL CONDITION OF CONTRACTGENERAL CONDITION OF CONTRACTTERMS OF PAYMENT (DETAILED IN SCC)BG REQUIREMENTS / FORMS (DETAILED IN ITB)

PART - II

SECTION-3 TECHNICAL SPECIFICATION

PART - III

SECTION-4 PROPOSAL EXHIBITS




R

PART - I

SECTION-1 COMMERCIAL EVALUATION FORM

SECTION-2 ITB AND DRAFT CONTRACT AGRE




R

PART - II

SECTION-3





R

TECHNICAL SPECIFICATIONFOR


CONTENTS

CLAUSE NO. DESCRIPTION P

1.00.00 INTENT OF SPECIFICATION

2.00.00 SCOPE OF WORK

3.00.00 SITE CONDITIONS

4.00.00 GENERAL REQUIREMENTS


6.00.00 SPECIFIC REQUIREMENTS

7.00.00 TESTS


9.00.00 DRAWINGS DATA & MANUALS

ATTACHMENTS

ANNEXURE - A RATINGS AND REQUIREMENTS

ANNEXURE – B LIST OF MANDATORY SPARES




R

TECHNICAL SPECIFICATION FOR


1.00.00 INTENT OF SPECIFICATION

1.01.00 This specification is intended to cover the design, enginmanufacture, assembly, inspection, testing at manufacturerdelivery, properly packed for transport F.O.R. project site of tgrounding resistor (NGR) complete with all accessories for efree operation.

1.02.00 The scope of work shall also include, at the option of tsupervision of erection, testing, commissioning and puttincommercial operation of all equipment furnished under this

1.03.00 The work is subject to all the terms and conditions detailedlisted below, which shall form part of this specification as if b

a. Tender Notice

b. Commercial Evaluation Format

c. Instructions to Bidders and Draft Contract Agreemen

d. Proposal Exhibits.

1.04.00 In the event of any discrepancy with listed documents, thespecification shall govern.

2.00.00 SCOPE OF WORK

2.01.00 Scope Of Supply

Details of the equipment listed below are furnished especification. The equipment shall be offered in strict cosame.

2.01.01 22.13 Ohms, 11000 V, 300 A for 10 seconds NGR

6.64 Ohms, 3300 V, 300 Amps for 10 seconds NGR

2.01.02 Each Resistor shall be furnished complete with :




R

2.01.04 Mandatory Spare Parts.

2.01.05 All relevant drawings, data and instruction manuals.

2.02.00 Scope of Services

The services of a senior engineer, experienced in commissioning of the equipment of similar type and rating sper diem basis. The work includes but not be limited to :-

2.02.01 Complete checking of materials at site and advising the discrepancy thereof.

2.02.02 Advice on procedure of erection to be followed.

2.02.03 Regular supervision and following up of erection work done

2.02.04 Testing, commissioning and putting the equipment commercial operation.

2.03.00 Exclusion f rom Scope of Work

2.03.01 All concrete foundation works.

2.03.02 Labor and equipment for unloading and installation.

2.03.03 Cables for connection between transformer and equipothers.

2.04.00 Delivery and commissioning schedule

2.04.01 Refer SPECIAL CONDITION OF CONTRACT (SCC), ment

3.00.00 SITE CONDITIONS

3.01.00 The equipment specified herein shall be installed at 2x600M

Thermal Power Station of Damodar Valley Corporation, PEnergy Limited.

3.02.00 The job site is situated at Raghunathpur in district of Purula distance of 11 KM from Sanka Railway Station on AdrGuage Railway Section.




R

Design Ambient Air Temperature : 50 0C (Max.) a

Basic wind speed : 47 m/secRelative humidity : 100% (Maximu

Seismic Zone (As per relevant IS) : III

4.00.00 GENERAL REQUIREMENTS

4.01.00 Codes and Standards

4.01.01 All equipment and materials shall be designed, manufactuaccordance with the latest applicable IEEE, Indian Standaexcept where modified and/or supplemented by this specifica

4.01.02 Equipment and material conforming to any other standard, wor better quality, may be accepted. In such cases, copies of tof the standard adopted shall be submitted along with the bid

4.02.00 Drawings & Annexures

4.02.01 All drawings and annexure appended to this specificationthis specification and supplement the requirements specified

4.02.02 This specification shall be read and construed in condrawings and annexure to determine the scope of work and

4.02.03 The quantities shown on drawings and annexure are te

purpose only. Any variation arising during detailed engineetaken into account for adjustment of contract price based oin the bid.

4.03.00 Completeness of supply

4.03.01 It is not the intent to specify completely herein all details Nevertheless, the equipment shall be complete and operaand shall conform to highest standard of engineering, desig

4.03.02 Any material or accessory which may not have been spebut which is necessary or usual for satisfactory and trouble-maintenance of the equipment shall be furnished without an

4.03.03 The Bidder shall supply all brand new equipment anspecified herein with such modification and alteration as




R

verification of the data and submitted along with the bid tBidder's formal proposal.

4.05.00 Guaranteed Performance

The performance figures quoted in Technical Particulaguaranteed within the tolerance permitted by relevant stanfailure of the equipment to meet the guarantee, the equipmfor rejection.

4.06.00 Deviation

4.06.01 Should the Bidder wish to deviate from this specification indraw specific attention to such deviation.

4.06.02 All such deviations shall be clearly mentioned on theenclosed, with reference to the respective clause of the spe

4.06.03 Unless such deviations are recorded in the Deviation shewith the offer, it shall be taken for granted that the offer is m

with this specification in all respects.

4.07.00 Drawing Approval

4.07.01 Before starting manufacture of any equipment, the Bidder approval of relevant drawings and data from the Purchwriting.

4.07.02 Any manufacture done prior to the approval of drawings/dat

in accordance with the approved drawings/data by the Biddand the equipment shall be supplied within the stipulated per

4.07.03 Make and type of Numerical Devices and fast bus transfesubject to approval by the Purchaser.

4.07.04 The Bidder shall be responsible for getting drawing appOwner’s Consultants, Purchaser, Purchaser’s Consultanordering.

4.08.00 Record of Past Experience

4.08.01 Necessary information about the financial and tecorganisation & experience to undertake the manufacturing aequipment shall be supplied by the Bidder as an evidence o

ti f ti f th P h




R

4.08.03 Apart from the requirements stipulated elsewhere in thisfollowing shall constitute the minimum technical qualifying

Bidder offering against this bid.

4.08.04 a. The Bidder must be an established manufacturer ohave designed, manufactured, tested, supplied and not less than three projects equipment of similar tSuch equipments have been in successful operationyears on the date set for opening of the bid.

b. The Bidder must be a regular manufacturer of NGRfacilities to manufacture the switchgear of the specified.

c. Not withstanding anything stated above, the Purcharight to assess Bidder’s financial and other capabiliticontract.

4.09.00 Quality Assurance

4.09.01 The Bidder shall follow his standard procedures for qualcontrol. Copy of the said standard procedures shall bePurchaser for his reference. However, Purchaser reserves the same and give his observations, if any, for compliance.

4.09.02 The procedures shall be in such a form as to cleamanufacturing sequence, inspection points, tests and acceptable ranges / values, reference drawings etc.

4.09.03 The Purchaser shall inform the Bidder as to which of theand tests shall be witnessed. As a minimum, inspection finished equipment shall be made prior to shipment, uwaived by the Purchaser. The Bidder shall give at leasadvance notice regarding readiness of the equipment.

4.09.04 Manufacturing and quality control procedures shall be avathe Purchaser and/or its representative at the place of manu

4.09.05 The Purchaser reserves the right to inspect the equipmemanufacture and witness factory and other such tests as to ensure conformance to the specification.

4.09.06 The Purchaser may inspect the Bidder’s facilities prior to aw




R

4.10.01 The equipment complete with its accessories, spares,

tackles shall be suitably protected by respective packconsidering handling during transit, distance and weather cThe Bidder shall submit the packaging method for shipmenhim, if so desired by the Purchaser.

4.10.02 Each consignment shall be marked with Equipment name, & address, Project details, handling instruction etc. It shallpart list and identification details. The copies of the consignment shall also be furnished to the Purchaser after d

4.10.03 Equipment shall be packaged for transportation so as to mweight limitation of transport facilities. The Bidder shall obconcerned authorities for transportation of ovconsignment/package, if any, before starting manufacture o


5.01.00 The Neutral Grounding Resistor shall be used for non-effe11000 V and 3300 V system of the plant. NGR shall be cothe 11000 V winding neutral point and earth of station traunit transformers. NGR shall also be connected between thneutral point and earth of auxiliary transformers.

5.02.00 Neutral Grounding Resistor shall be used to limit the magncurrent so that damage of electrical equipment is reduced, sis increased and sensitive, selective earth fault protection ca

5.03.00 The NGR shall be installed in dust prone, hot, humid and tro All equipment, accessories and wiring shall be provided wiprevent fungus growth.

5.04.00 The rated time for the earth fault current or specified therm10 seconds.

5.05.00 The Bidder shall quote for neutral grounding resistor with fin

per allowable limit due to the specified current for specified t

5.06.00 The resistor unit shall be air-cooled type suitable for instlocations.

5.07.00 The resistor enclosure shall be made of sheet steel and shthi k f 2

R




R

6.01.01 The resistor element shall be made of non-aging stainless corrosion resistant material having high electrical re

temperature co-efficient of resistant.

6.01.02 The resistor unit shall consist of a no. of elements. All themounted inside the cubicle so as to ensure ease oreplacement of individual element. The resistors shall be ed

6.01.03 Each resistor element shall possess a balanced commechanical and electrical properties over the entire intemperature range without any harmful effect on the e

accessories.

6.01.04 All the resistor elements constituting the NGR shall bsupported inside the cubicle in such a way that no distortionoccur during the passage of through fault current to earth.

6.01.05 All element connections shall be bolted type to ensure stabthroughout the working life of the unit.

6.01.06 Wet process type brown glaze porcelain insulators ssupporting resistor elements. Porcelain insulators shall havalue suitable for heavily polluted atmosphere charged with

6.02.00 Enclosure

6.02.01 Each neutral grounding resistor shall have structural steel all sides and also on top by sheet steel having a minimum tSuitable ventilating louvers shall be provided on sides

ventilation. The louvers shall be provided with fire wire vermin proof.

6.02.02 Each enclosure shall be self supporting, weather proofoutdoor mounting having a protection class as indicated in a

6.02.03 Each cubicle shall be complete with a front access door and also a removable bolted cover. All doors and removabproperly gasketed with neoprene rubber gaskets. All cubicle

be concealed type.

6.02.04 Each cubicle shall be complete with a suitably mounted cawith removable gland plate for fixing cable gland. The cabindicated in the annexure.

6 02 05 E h bi l h ll b id d ith it bl b h l

R




R

6.03.02 Two pole switch fuse unit shall be provided for receiving 2 AC supply for cubicle lamp and illumination circuit.

6.04.00 Wiring

6.04.01 All internal wiring between equipment and terminal block sby PVC insulated 650 V grade 2.5 Sq.mm stranded copper

6.04.02 All wiring shall be suitably ferruled with corresponding wmarks used in the schematic / wiring diagrams.

6.04.03 All devices and terminal blocks within the terminal boxidentified by symbol corresponding to those usedschematic/wiring diagram. 20% spare terminals shall be prblock.

6.05.00 Grounding

6.05.01 All parts of enclosure, supporting structures, equipment fraproperly grounded at two points separately.

6.05.02 Each cubicle shall be completed with two (2) nos. ground pand bolts suitable for connection of 50 x 6 mm galvanised s

6.06.00 Painting

6.06.01 All surfaces shall be sand blasted, pickled and groundproduce a smooth, clean surface free of scale, grease & rus

6.06.02 After cleaning, the surfaces shall be given a phosphate coacoats of high quality primer and stoved after each coat.

6.06.03 The equipment shall be finished with two coats of approvein the annexure

6.06.04 Sufficient quantity of touch-up paint shall be furnished for ap

7.00.00 TESTS

7.01.00 Routine Tests

Each equipment shall be completely assembled, wired, adtested as per relevant standards at manufacturer's worki l d

R




R

7.02.00 Type Tests

7.02.01 Temperature test shall be carried out on one unit of each such test, if any, shall be quoted separately.

7.03.00 Test Witness

All tests shall be performed in presence of Purchasrepresentatives, if so desired by the Purchaser. The Bidder

seven (7) days advance notice of the date when tests are to

7.04.00 Test Certificate

7.04.01 Certified reports of all the tests carried out at the works shsix (6) copies for approval of the Purchaser.

7.04.02 The equipment shall be dispatched from works only after re/ Purchaser's written approval of the test reports.

7.04.03 Type test certificate on any equipment, if so desired byPurchaser, shall be furnished. Otherwise the equipment shtested, free of charge, to prove the design. Type tests per(5) years are not acceptable.


8.01.00 A set of special tools & tackle which are necessary or convcommissioning, maintenance and overhauling of the eqsupplied.

8.02.00 The tools shall be shipped in separate containers, clearlyname of the equipment for which they are intended.

9.00.00 DRAWINGS, DATA & MANUALS

9.01.00 Drawings, data and manuals shall be submitted with the biand procedures as specified in General Conditions on elsewhere in this specification for approval and subsequenthe issue of Letter of Intent.

9 02 00 T b S b itt d ith th Bid

R




R

9.02.04 Dimensional general arrangement drawings showing consetc. along with necessary foundation plan.

9.02.05 Cable termination details.

9.02.06 Technical leaflets on each piece of electrical equipment alosalient features.

9.02.07 Type test certificate of similar type and rating of offered equ

9.03.00 To be submit ted for Purchaser’s Approval and Distribut

(A) : ‘Approval Category’

(R) : ‘Reference Category’

9.03.01 Guaranteed Technical Particulars (A) and Quality assuranc

9.03.02 Dimensioned General Arrangement drawings of cubicle sof all electrical equipment such as resistor elements, cab

inside the cubicle. (A)

9.03.03 Consolidated Bill of Materials. (A)

9.03.04 Foundation Plan and loading of cubicle. (A)

9.03.05 Control schematic (A) and wiring diagram of the whole syste

9.03.06 Erection drawings of cubicle and resistor elements.

9.03.07 Transport/shipping dimension and the dimension of sphandling various parts for maintenance. (R)

9.03.08 Test certificates (A)

9.03.09 Instruction manuals for the complete system. (R)

The manual shall clearly indicate method of installation, ch

to be carried out before commissioning of the equipment.

9.04.00 Any other relevant drawing or data necessary for satisfoperation and maintenance.

9.05.00 The drawings and document marked with (A) above t d bj t t i b P h Th

T h i l S ifi ti fR




R

drawings & document shall be submitted for approval & rdrawings and documents shall be submitted in CD in Aut

version) and MS office format as applicable for Purchaser’s

The Bidder may note that the drawings, data and manualminimum requirements only. The Bidder shall ensure that awrite-ups, curves and information required to fully describe submitted with his bid.

T h i l S ifi ti fR




ANNEXURE-A

RATINGS AND REQUIREMENTS

1.0 General

1.1 Applicable standard : IEEE-32

1.2 Service : Outdoor, free s

1.3 Rated system Voltage& allowable variation : 11KV±10%3.3KV±10%

1.4 Rated frequency andallowable variation : 50Hz±5%

2.0 Rating

2.1 Rated Voltage KV : 11KV & 3.3KV

2.2 Rated current at rated time duration Amp : 300A

2.3 Rated time duration Sec. : 10

2.4 Resistance in design ambient temp. Ohm : 22.13Ω & 6.64Ω

2.5 Allowable Tolerance in resistance value% : ±10

2.6 Design ambient Temperature ° C : 50

2.7 Temperature rise of resistor °C : 350

2.8 Temp rise of Enclosure °C : 30

2.9 Insulation class of insulating material : Over 220°C Cla

2.10 Basic Insulation level and system insulation class :

11KV System insulation class forline end & ground end KVrms : 75/28 KV

(peak/r.m.s) Insulation level (applied

Technical Specification forR




3.2 Resistor element combination : Series-parallel

3.3 Enclosure material : Sheet steel

3.4 Min. Thickness of aluminium sheet mm : 2

3.5 Enclosure protection class : IP33

3.6 Finish paint of interior & exterior :

a) shade as per IS-5 : LATER

b) Base : LATER

3.7 Terminal arrangement : Through cable

3.8 Type & size of cable to be terminated : 2-1/C-70sq. mm

4.0 Insulators

4.1 Type : Support insulat

4.2 Materials : Porcelain

4.3 Bushing rating KVrms : 12 KV & 3.6 KV

4.4 Creepage distance mm : 31 mm/KV

Technical Specification forR




ANNEXURE-B

LIST OF MANDATORY SPARES

Sl.no.

Items

1. Brown glazed porcelain insulators for supporting betweenmounting frame and each resistor assembly

2. Interposing insulator assembly

3. Ceramic and Micanite insulator for supporting between resistorand mounting frame




SECTION-C

APPROVED VEND

DRAWINGS/

DOCUMENTS






























SECTION-D

RINFRA’s CLARIFICATIO

HOLD

ON APPROVED GTP OF

DATED: - 16.11.09











Documents

Technical Data Book of Ngr