DCCD1

DCCD - FLAME RETARDANT LOW SMOKE LABORATORY

DCCD Home

Electric cables are designed to carry power and communications for long

distances and can act as pathway along which fire can travel and spread. In addition

there are cable installations where large number of cables are installed vertically.

These can act as an area of significant fire hazard because of the medium of high fuel

loading represented by the insulating and sheathing materials. Fires involving these

cables may cause the loss of life as well as damage to the facilities and equipment. In

order to avoid such disasters the demand has arisen for improved flame-retardant

cables to reduce not only flame propagation but also smoke and toxic emission.

The Flame retardant low smoke cables laboratory carryout fire reaction tests on

electric cables and all polymeric materials according to various national and

International standards.

Test facilities at FRLS lab

TESTING/EQUIPMENT FACILITY :-

Some of the important test facilities are

Cone Calorimeter

http://www.cpri.in/testing/dccd/dccd_home.html

Toxicity chamber

NBS Smoke Box Chamber

3 metre cube test chamber

Limiting Oxygen Index apparatus

HCl Emission apparatus

Fire Resistance test set-up

Test using Cone calorimeter

ACCREDITATIONS : -

The facility has been accredited for Flame Retardant Low Smoke testing as per

ISO/IEC 17025 by National Accreditation Board for Testing and Calibration

Laboratories (NABL) Govt of India.

TEST FACILITIES :-

Products/Apparatus Tests Conducted

§ Electric cables

§ Cable sheath materials

§ FRP composite materials

§ Cable trays

§ Channels

§ Feeder pillar boxes

§ Energy meter covers

§ Terminal blocks

§ Bushings

§ Supporting insulators

§ PVC conduit pipes

§ Flooring materials

§ Fabrics/curtain

§ Materials used in

aerospace/navy

§ Any other plastic material

Heat release measurements using Cone

Calorimeter

Toxicity Index test

Limiting Oxygen Index (Ignition property

of Plastics )

Temperature Index (Temp withstand

before ignition)

HCL (Acid gas content in plastics )

Zero Halogen evaluation

Smoke Density ( smoke evolved, and

light transmission, visibility under fire)

Fire resistance test (Circuit integrity

under fire conditions)

Flammability Test (The property of

propagating fire)

The lab will be augmented shortly for tests on Bunched cables.

FRLS TEST FACILITIES :-

Test Standard

(HRR) Heat Release Rate, Cumulative heat

released,

Effective heat combustion, Time to ignition,

ISO 5660

ASTM 1354

Mass loss rate, total mass loss, Smoke

obscuration

CO/CO2 production rate

Oxygen Index Test on Polymeric materials and

cable sheaths

ASTM D 2863-1997

NCD 1410

IS 10810(P-58)-1988

IS 13501-1992

Temperature Index Test on Polymeric materials

and cable sheaths

ASTM D 2863-1997

Halogen Acid Test on Polymeric materials and

cable sheaths

IEC 754(P-1)-1994

Flammability Test on Polymeric materials and

cable sheaths

UL 94-HB/VB-1980

ASTM D 635-1998

IS 11731(P-1,2)-1986

IS 6746-1972

Flammability Test on cables IS 10810(P-61)-1988

UL 1581-1991

IEC 332(P-1)-1979

IS 10810(P-53)-1984

IEC 332(P-3)-1991

IS 10810(P-62)-1993

IEEE 383-1974

Smoke density test on Polymeric materials and

cable sheaths

ASTM D 2843-1999

Smoke density test (3 Metre cube) on cables IEC 1034-2 1991

IS 10810 (P-63)-1993

Specific Optical density(NBS smoke box) on

Polymeric materials and cable sheaths

ASTM E-662-1983

NCD 1411

Fire survival Test on cables IEC 331 1970

CLIENTELE :-

Facilities are extensively used by Industrial Clients like RDSO, ICF, Tyco

Electronics, Lapp India, Reliance Engineers, Nicco Corporation, Whirlpool of India Ltd,

BIS and other utilities and manufacturers. Clients from countries like Dubai, UAE, etc.

are also widely using the test facilities

Products Wise Testing :

Protocol Test:

Energy Meter Data Concentrator IED Relay Protocol Convertor RTU

(The above Equipments are tested at ITID-Bangalore)

Cable Test :

Paper/PVC/XLPE/EPR Power cables of Voltage rating up to 220 kV Cable accessories, etc

(The above Equipments are tested at DCCD- Bangalore, STDS-Bhopal, and RTL-Noida)

Capacitor Test:

HV Shunt capacitors

HV Series capacitors

HV Capacitors for surge

LV Motor capacitors

LV fan motor Capacitors

LV Capacitors for Lighting

LV Power capacitors of self-healing type.

LV Shunt capacitors of non self - healing type.


Flame Retardant Low Smoke Test :

Electric cables

Cable sheath materials

FRP composite materials

Cable trays

Channels

Feeder pillar boxes

Energy meter covers

http://www.cpri.in/LABS/dccd/frls.html

http://www.cpri.in/testing/rtl/rtl_home.html

http://www.cpri.in/testing/stds/stds_home.html





http://www.cpri.in/testing/it/it_home.html

Terminal blocks

Bushings

Supporting insulators

PVC conduit pipes

Flooring materials

Fabrics/curtain

Materials used in aerospace/navy

Any other plastic material

(The above Equipments are tested at DCCD- Bangalore)

Temperature Rise Test :

Distribution, Transmission & Power equipment and accessories

Diagnostics Test on,

Power Transformer

Generators / Large motors

Power cables

EHV CTs, / CVTs

Resin Cast CTs


High Power Test :

High voltage circuit breakers

High Voltage Switches

High Voltage Fuses

High Voltage Switch Boards

Terminal Boxes

MV Metal enclosed Switchgear

Power Transformers

Distribution Transformers

Traction Transformers



Potential Transformers

Current Transformers

Lightning Arresters

Insulator Strings

AC metal enclosed switch gear & control gear.

AC Disconnectors & Earth switches

Reactors

Line traps

Bus ducts, Bus bars, Generator Neutral Bus bar Compartment

Power connectors, ACSR conductors

LV Circuit Breaker

(The above Equipments are tested at HPL- Bangalore, STDS-Bhopal, and SCL-Bangalore)

Insulation / Impulse voltage Withstand Test :

Insulator ( Disc, Pin, Solid Core, Hollow)

Insulator Strings (all types)

Lightning Arrestor Housing & similar Insulating Materials

Battery Container

Rubber Mats

Insulating Tubes etc. Insulating Rod Isolator, Circuit Breaker Bus duct Cables Bushing AB Switch Panel P T /C V T / Coupling Capacitor/ Grading Capacitor / R.V.T.S / CT-PT Units Tap changer Voltage / Current / Power / Distribution Transformers Reactors HT Capacitors Thyristor Valves

(The above Equipments are tested at HV- Bangalore, STDS-Bhopal, UHVRL-Hyderabad and RTL-Noida)


http://www.cpri.in/testing/uhvrl/uhvrl_home.html


http://www.cpri.in/testing/hv/hv_home.html

http://www.cpri.in/testing/scl/scl_home.html


http://www.cpri.in/testing/hpl/hpl_home.html

Short Circuit / High Voltage / Synthetic Test :

Circuit Breakers (LV, HV)

Fuses

Switches

Starters

Control Switches

MCB / RCCB Switch Fuse units

Power Connectors

Spacers

Bus bars

Bus ducts

CT's conductors

Transformer

P T /C V T / Coupling /Tap Changers

Capacitors

Grading Capacitors

R.V.T.S

C.T – PT UNITS

Series & Shunt Reactors

Line Traps

Damping Reactors Tuning Reactors

Neutral Earthing Reactors

THYRISTOR VALVES

H.V. Circuit Breaker & Switchgear Panel with Circuit Breaker

HT switches/ Line sectionalizer

Isolators

Power & Distribution transformers & Traction transformers

HT fuses

Surge arresters

Reactors

Auto-reclosures

DC Breakers

HT switchgear panel

Motor terminal box

Spacers for Bundled conductor

HV Contactors

LT Air circuit breakers, MCCBs for voltage not exeeding 1000V

Circuit Breakers for Over current protection for household & similar installations

Miniature circuit breakers (MCB)

Low voltage fuses for voltage not exceeding 1000V

Low voltage fuse bases for voltage not exceeding 1000V

Air break switches, Air break disconnectors, air break switch disconnectors, fuse combinations

for voltage not exceeding 1000V

Carrier & Bases for Rewirable type fuses

Composite unit of air break switches for rewirable type switches for voltage not exceeding

650V, AC21, 100A

AC Miniature circuit breaker boards 1000V

Residual current operated circuit breaker

Factory build assemblies of switchgear & controlgears for 1000V

For enclosed distribution board & cutouts 1000V

Contactors & motor starters for voltages at exceeding 1000V

Electric power connectors above 200A


Dielectric Materials Test :

Lubricating Oil

Transformer Oil

Polymers etc.

(The above Tests are Conducted at DMD- Bangalore)

Materials Test :

Coal

Analysis of coal, ash and water for thermal power stations

Lubrication oil and all other materials.

(The above Tests are Conducted at MTL- Bangalore)

http://www.cpri.in/testing/mtl/mtl_home.html

http://www.cpri.in/testing/dmd/dmd_home.html




Structural / Mechanical strength/ Vibration Test :

Transmission line towers

Line material

Transmission Line Conductors upto and including 800kV rating

Compression Clamps

Mid Span Joints

I&V Suspension Tension Strings upto and including 800kV rating

Structural Steel

Steel Wire ropes

Electrically Operated/ Hand Operated Winches

Chain Pulley Block upto 20 Tonnes

Load Cell

Line Material

Terminal Clamp

Structural Steel

Connecting Links for Brake Parachute/ Nylon Purchase Tape

Insulators & Insulator Strings of Single/ Twin/ Triple/ Quad-Tension or Suspension type upto and

including 800kV rating

Vibration Dampers upto and including 800kV

Spacer/ Spacer Dampers upto and including 800kV.





Conductors

(These Products are tested at MED- Bangalore)

Seismic Qualification / Vibrations Test :

Energy Meter

http://www.cpri.in/testing/med/med_home.html

Switchgear, Control Panel

All Equipments up to 10 Tons.

(The above Tests are Conducted at EVRC- Bangalore)

Calibration Tests :

Digital & Analog Voltmeters

Digital & Analog Ammeters

Multimeters

Digital & Analog Wattmeters

Digital Temperature indicators

Digital & Analog Panel meters

Electronic Thermometers

Data Loggers

Strip chart recorders

Power harmonic analysers

Process calibrators

Hot & Cold temperature baths

Current Clamps

Thermometers

Impulse measuring system

(The above Equipments calibration tests are conducted at ID- Bangalore, STDS-Bhopal)

Test :

Relay

UPS (Uninterrupted Power Supply) (1 KVA - 10 KVA & above)

Single Phase Electromechanical / kWh / Static / Electronic Energy Meters

Three Phase Four Wire / Three Phase Three Wire Electromechanical / kWh / TVM Static /

Electronic Energy Meters

Single phase / Three phase Static watt-hour meters

Electronic Trivector meters

Static protective relays


http://www.cpri.in/testing/id/id_home.html

http://www.cpri.in/testing/evrc/evrc_home.html

Smaller size UPS, SMPS, Inverters, Converters, Contactors etc

All Electronic equipments, like Static Relays, Breakers, contactors, starters, Electronic ballast,

Medical equipments

(The above Equipments are tested at ID- Bangalore, STDS-Bhopal)

Battery Testing :

Lead acid storage Batteries, VRLA, LMLA, NICAD Batteries, Tubular Batteries

(The above Tests are Conducted at EATD-Bangalore)

Flame Proof Testing :

All flame proof electrical equipment


Ingress Protection Test:

All types of electrical equipment enclosures such as- Outdoor distribution boards Relay units/Panels Control Cubicles for PCVCB Switching & Control System enclosures RMV panels HT Metering & Switching Panel AC Distribution Board EWM Enclosures Platform Power Supply LT Panel Disconnecting Switch Assembly Junction Boxes LV switch Board AD/DC Panel weatherproof Switch Enclosures Dry type Transformer enclosures PCC Panel, MCC Panel, Bus Ducts DOL Starters Integral Starter Control Panel Electricity Metering Equipment Enclosures Actuators Telecommunication Equipment Enclosures Antennas

http://www.cpri.in/testing/eatd/eatd_home.html




Cable Connector Assembly GPRS Equipment Enclosures Battery Charger Panels Medical Health Monitoring Equipment Enclosures Drive Mechanism Box Marshalling Kiosks Surge Monitors MOM's Belt sway Switch Enclosures Reactor assembly Enclosures Starter Motors Sot Starter Panels RAPCONS BAPCONS

Rotating Electrical Machinery Equipment Enclosures such as :

Enclosures of Induction Motors Valve Actuators DC Machines AC Machines Alternators Generators Vibratory Electric Motors Large Motors Automobile Electrical Motors Traction Motors Power Tool Motors Pumps (motors) Etc.

Luminaries and Light Fitting Equipment Enclosures such as :

Street light Fitting Enclosures Aviation Light Fitting Enclosures Domestic Industrial Light Fitting Enclosures Corridor/ Office Light Fitting Enclosures

Solar Operated Light Fitting Enclosures Etc.

(The above Tests are Conducted at EATD-Bangalore, STDS-Bhopal)

Luminaries :

Tubular fluorescent lamps with Starter

Self Ballasted Lamps for General Lighting Service (CFL)

Safety requirements and Performance requirements

Lamp Ballast




Fan Testing :

Electrical Ceiling Fans and Regulator

Electrical Table Type Fans and Regulator

Electrical Pedestal Type Fans and Regulators

Propeller Type AC Ventilating Fans


Refrigerators :

Direct cool and frost free refrigerators up to 600 lts. capacity.


Air Conditioners :

Window air conditioner and split type air conditioner up to 3 TR.

(The above

Products Wise Testing :

Protocol Test:



Cable Test :

Paper/PVC/XLPE/EPR Power cables of Voltage rating up to 220 kV Cable accessories, etc (The above Equipments are tested at DCCD- Bangalore, STDS-Bhopal, and RTL-Noida)

Capacitor Test:

HV Shunt capacitors










LV Motor capacitors







Electric cables



Cable trays

Channels

Feeder pillar boxes

Energy meter covers

Terminal blocks

Bushings


PVC conduit pipes

Flooring materials

Fabrics/curtain







Power Transformer







Power cables

EHV CTs, / CVTs

Resin Cast CTs


High Power Test :



High Voltage Fuses


Terminal Boxes


Power Transformers





Lightning Arresters

Insulator Strings



Reactors

Line traps



LV Circuit Breaker










Battery Container

Rubber Mats





Fuses

Switches

Starters

Control Switches


Power Connectors

Spacers

Bus bars

Bus ducts

CT's conductors

Transformer


Capacitors

Grading Capacitors

R.V.T.S

C.T – PT UNITS






Line Traps



THYRISTOR VALVES



Isolators


HT fuses

Surge arresters

Reactors

Auto-reclosures

DC Breakers

HT switchgear panel

Motor terminal box


HV Contactors


Circuit Breakers for Over current protection for household & similar installations




Air break switches, Air break disconnectors, air break switch disconnectors, fuse combinations

for voltage not exceeding 1000V


Composite unit of air break switches for rewirable type switches for voltage not exceeding

650V, AC21, 100A












Lubricating Oil

Transformer Oil

Polymers etc.


Materials Test :

Coal






Line material


Compression Clamps

Mid Span Joints


Structural Steel

Steel Wire ropes



Load Cell

Line Material

Terminal Clamp

Structural Steel




Insulators & Insulator Strings of Single/ Twin/ Triple/ Quad-Tension or Suspension type upto

and including 800kV rating







Conductors



Energy Meter




Calibration Tests :



Multimeters





Data Loggers



Process calibrators




Current Clamps

Thermometers


(The above Equipments calibration tests are conducted at ID- Bangalore, STDS-Bhopal)

Test :

Relay



Three Phase Four Wire / Three Phase Three Wire Electromechanical / kWh / TVM Static /

Electronic Energy Meters





All Electronic equipments, like Static Relays, Breakers, contactors, starters, Electronic ballast,

Medical equipments


Battery Testing :













All types of electrical equipment enclosures such as- Outdoor distribution boards Relay units/Panels Control Cubicles for PCVCB Switching & Control System enclosures RMV panels HT Metering & Switching Panel AC Distribution Board EWM Enclosures Platform Power Supply LT Panel Disconnecting Switch Assembly Junction Boxes LV switch Board AD/DC Panel weatherproof Switch Enclosures Dry type Transformer enclosures PCC Panel, MCC Panel, Bus Ducts DOL Starters Integral Starter Control Panel Electricity Metering Equipment Enclosures Actuators Telecommunication Equipment Enclosures Antennas Cable Connector Assembly GPRS Equipment Enclosures Battery Charger Panels Medical Health Monitoring Equipment Enclosures Drive Mechanism Box Marshalling Kiosks Surge Monitors MOM's Belt sway Switch Enclosures Reactor assembly Enclosures Starter Motors Sot Starter Panels RAPCONS BAPCONS


Enclosures of Induction Motors Valve Actuators DC Machines AC Machines Alternators Generators Vibratory Electric Motors Large Motors Automobile Electrical Motors Traction Motors Power Tool Motors

Pumps (motors) Etc.





Luminaries :




Lamp Ballast


Fan Testing :






Refrigerators :



DCCD - FLAME RETARDANT LOW SMOKE LABORATORY

DCCD Home







Electric cables are designed to carry power and communications for long

distances and can act as pathway along which fire can travel and spread. In addition

there are cable installations where large number of cables are installed vertically.

These can act as an area of significant fire hazard because of the medium of high fuel

loading represented by the insulating and sheathing materials. Fires involving these

cables may cause the loss of life as well as damage to the facilities and equipment. In

order to avoid such disasters the demand has arisen for improved flame-retardant

cables to reduce not only flame propagation but also smoke and toxic emission.

The Flame retardant low smoke cables laboratory carryout fire reaction tests on

electric cables and all polymeric materials according to various national and

International standards.

Test facilities at FRLS lab

TESTING/EQUIPMENT FACILITY :-

Some of the important test facilities are

Cone Calorimeter

Toxicity chamber

NBS Smoke Box Chamber

3 metre cube test chamber

Limiting Oxygen Index apparatus

HCl Emission apparatus

Fire Resistance test set-up

Test using Cone calorimeter

ACCREDITATIONS : -

The facility has been accredited for Flame Retardant Low Smoke testing as per

ISO/IEC 17025 by National Accreditation Board for Testing and Calibration

Laboratories (NABL) Govt of India.

TEST FACILITIES :-

Products/Apparatus Tests Conducted

§ Electric cables

§ Cable sheath materials

§ FRP composite materials

§ Cable trays

§ Channels

§ Feeder pillar boxes

§ Energy meter covers

§ Terminal blocks

§ Bushings

§ Supporting insulators

§ PVC conduit pipes

§ Flooring materials

§ Fabrics/curtain

§ Materials used in

aerospace/navy

§ Any other plastic material

Heat release measurements using Cone

Calorimeter

Toxicity Index test

Limiting Oxygen Index (Ignition property

of Plastics )

Temperature Index (Temp withstand

before ignition)

HCL (Acid gas content in plastics )

Zero Halogen evaluation

Smoke Density ( smoke evolved, and

light transmission, visibility under fire)

Fire resistance test (Circuit integrity

under fire conditions)

Flammability Test (The property of

propagating fire)

The lab will be augmented shortly for tests on Bunched cables.

FRLS TEST FACILITIES :-

Test Standard

(HRR) Heat Release Rate, Cumulative heat

released,

Effective heat combustion, Time to ignition,

ISO 5660

ASTM 1354

Mass loss rate, total mass loss, Smoke

obscuration

CO/CO2 production rate

Oxygen Index Test on Polymeric materials and

cable sheaths

ASTM D 2863-1997

NCD 1410

IS 10810(P-58)-1988

IS 13501-1992

Temperature Index Test on Polymeric materials

and cable sheaths

ASTM D 2863-1997

Halogen Acid Test on Polymeric materials and

cable sheaths

IEC 754(P-1)-1994

Flammability Test on Polymeric materials and

cable sheaths

UL 94-HB/VB-1980

ASTM D 635-1998

IS 11731(P-1,2)-1986

IS 6746-1972

Flammability Test on cables IS 10810(P-61)-1988

UL 1581-1991

IEC 332(P-1)-1979

IS 10810(P-53)-1984

IEC 332(P-3)-1991

IS 10810(P-62)-1993

IEEE 383-1974

Smoke density test on Polymeric materials and

cable sheaths

ASTM D 2843-1999

Smoke density test (3 Metre cube) on cables IEC 1034-2 1991

IS 10810 (P-63)-1993

Specific Optical density(NBS smoke box) on

Polymeric materials and cable sheaths

ASTM E-662-1983

NCD 1411

Fire survival Test on cables IEC 331 1970

DCCD - HEAT RUN TEST LABORATORY

DCCD Home

Temperature rise test upto 3200 Amps Milli volt drop & resistance tests

(wherever applicable) from 1.o micro ohms to 20 kilo Ohms can be conducted on the


following equipment, as per Indian (BIS) IEC, ANSI of ASTA standards.

Pantograph Isolator

Isolated Phase BusDuct L.T Busduct

TEMPERATURE RISE TEST ON VARIOUS PRODUCTS :-

The Laboratory has facility to carry out Temperature rise test on Distribution,

Transmission & Power equipment and accessories as per relevant National &

International Specifications.

TESTING FACILITY FOR TEMPERATURE RISE TEST :-

Current source upto 3200 Amperes , 20 Volts, Three Phase and Neutral

DC Source 500 Amperes, 200 Volts

Temperature Monitoring equipment: Digital & Fiber Optics

Micro Ohm Meters

Milli Voltmeter/ Multimeter

On Load Tap Changer Circuit Breaker

Current Transformer Feeder Pillar


The facilities of Heat Run test laboratory, are being extensively used for testing

& certification, on number of Distribution, Transmission & Power equipment and

accessories. Apart from this the facilities are also used for product development,

mainly by manufacturers.

ACCREDITATION :-

The facility has been accredited for electrical testing as per ISO / IEC 17025 by

National Accreditation Board for testing and Calibration Laboratories (NABL), Govt. of

India and signatory to International Laboratory Accreditation Cooperation (ILCA)

Mutual Recognition Arrangement.

The facility is also been accredited by ASTA BEAB- UK, IECEE-CB –UK and BIS.

Feeder Piller L.T Panel Board

Outdoor Circuit Breaker SF6 Circuit Breker


TEST FACILITIES

Apparatus Type of Test Standard

Distribution Boards Temperature Rise upto

3200 A

IEC - 60439

Panel BoardTemperature Rise upto

3200 A

IS – 8623 / IEC 60439

Circuit BreakerTemperature Rise upto

3200 A

Resistance Measurement

IEC – 62271-100

IsolatorsTemperature Rise upto

3200 A


IS-9921/ IEC – 62271-

200

Disconnect Switch-

HV

Temperature Rise upto

3200 A


IEC – 60298

Current TransformerTemperature Rise upto

3200 A


IS – 2705/ IEC – 60044

Busduct - HTTemperature Rise upto

3200 A

IS-8084

Busduct - LTTemperature Rise upto

3200 A

IS-8623 / IEC – 60439

Tap ChangerTemperature Rise upto

3200 A

IEC – 60214

Voltage TransformerTemperature Rise


IS-3156

Power connectorTemperature Rise upto

3200 A


IS-5561

LV FusesTemperature Rise upto

3200 A

IS-2086

AC Metal enclosed

Switchgear

Controlgear

Temperature Rise upto

3200 A


IS-3427

HV Circuit BreakerTemperature Rise upto

3200 A


IS – 13118 / IEC

62271-100

LV Circuit BreakerTemperature Rise upto

3200 A


IS – 13947-2/ IEC

60947-2

RESEARCH:-

Facilities to undertake R & D, in the field of current carrying capabilities and its

effects on temperature rise on Switchgears, Panels, Distribution Boards, Bus duct

systems, disconnector Switches etc.

CONSULTANCY:-

Inspection of various equipment like switchgear, Control gear, Distribution Boards

Panels CTs, PTs, etc., for Temperature Rise performance, at the Manufacturers work,

as per relevant Specifications.

Mechanical Engineering Division

Upcoming Programmes

Two day workshop on ‘High Voltage

Testing & Measurement Techniques’- Sept 2-3, 2010

Five day Training Programme on ‘Test Facilities’- Sept 6-10, 2010

Five day residential Training Programme on ‘Protective Relays’ - Sept 13-17, 2010

Five day training programme on 'Real Time Digital Simulation of Power Systems' - Sept 21-25, 2010

view all programme

Central Power Research Institute (CPRI) is an autonomous society under Ministry of

Power, Government of India. Set up in 1960 by the Government of India, it functions as a

centre for applied research in electrical power engineering assisting the electrical industry in

product development, Consultancy and quality assurance. CPRI also serves as an independent

http://www.cpri.in/events/index.html

http://cpri.in/events/UHVRL_Workshop_Brochure.pdf

http://cpri.in/events/UHVRL_Workshop_Brochure.pdf

http://www.cpri.in/e-souvenir.pdf

http://www.cpri.in/e-souvenir.pdf

authority for testing and certification of power equipment. CPRI's governing body includes

eminent professionals from industries, utilities, prestigious academic and research institutions

and the government.

High Voltage Division :

Home

HV Division has dimension of 50(L)*40m(W)*35m(H) and an outdoor test bay which is equipped with

cascade transformer of two units, rated 600kV,2000kVA each. Facilities are available for taking supply in

to the main laboratory for indoor tests. A 600kV,2000kVA Power frequency testing transformer is located

indoor. Facilities for tensioning of horizontal insulator strings for conducting corona and RIV tests at

EHV/UHV test voltage are also available.

Laboratories Available :

High Voltage Laboratory

Impulse Current Laboratory

Pollution Laboratory

1200kv, 2 MVA Cascade Transformer

3 MV, 150 KJ Impulse Generator

Facilities Available for Testing :

Lightning impulse & switching impulse withstand and flashover tests both under dry and wet

conditions.

Power frequency voltage withstand & flashover test (Dry).

Power frequency voltage withstand & flashover test (Wet).

Visible corona inception/ extinction test with power frequency voltage under both dry and wet

conditions.

Radio interference voltage test under both wet and dry conditions.

Voltage distribution test on insulator strings.

Under oil puncture test on Disc, pin & post insulator units.

Steep front impulse puncture test on Disc, pin, & post insulator units.

Porosity tests on porcelain insulator fragments.

Temperature cycle tests on Disc, pin, & post insulator upto 33kV rating (indoor).

Dc withstand & flashover test under Dry and Wet conditions.

http://www.cpri.in/testing/hv/hv_pollution.html

http://www.cpri.in/testing/hv/hv_impulse.html

http://www.cpri.in/testing/hv/hv_hvlab.html

http://www.cpri.in/index.htm

The tests are done as per National standards (IS) and International standards like BS, IEC,

ANSI etc.

It is worth mentioning here that the impulse and power frequency test facilities are of the

state of the art type and compare well with the facilities available at other International

laboratories like CESI, Italy, IREQ, Canada etc.

Further information contact us:

The Head of the Division

High Voltage Division

Central Power Research Institute

Prof. Sir C. V. Raman Road, P.B 8066,

Bangalore, India – 560 080.

Phone : +91-80-23601917(Off.)

E-mail : [email protected], [email protected]

High Voltage Division - Impulse Current Lab

HV Home

The Impulse Current Laboratory has been established in 1996 as a comprehensive test facility

considering the importance of ZnO arresters which are being increasingly used by several Utilities. Its

significance lies in the fact that, it has a unique Computer-controlled Impulse Current Generator

incorporating all conceivable features in a single consolidated design and is perhaps the only one of

its kind in this part of the world. All tests on ZnO blocks as per IEC 60099-4 and IS 3070 including

accelerated ageing test and loss measurement on ZnO blocks can be carried out.

Equipment available :


mailto:[email protected]

Impulse Current Generator 100 kV, 150 kJ

Types of Tests :

All type tests on Zno arrester blocks upto 11 kV As per National and International

Standards

Necessity Of Testing Arrester Blocks :

Lightning arresters, often called Surge Diverters, play a vital role in protecting expensive substation equipment from high voltage surges. These surge voltages originate from either switching operations of substation equipment or lightning strikes. In either case these over voltages have to be limited well below the insulation levels of the equipment. By R&D, new designs of lightning arresters have emerged, by which, it has become possible to bring down the insulation levels of the equipment resulting in significant savings to the power systems. Till recently gap type arresters were in use in the power system. Even in this type, new concepts were introduced in the design by which one to two step reduction of basic insulation level (BIL) of 145 and 220 kV systems were possible. These arresters are being now replaced by Zinc Oxide (ZnO) Gap-less arresters, (also known as Metal Oxide Surge Arresters). As reported in the literature, these were first developed in Japan and came into use from 1970. The replacement of conventional arresters by ZnO type initially started from system voltages above 145 kV class owing to their high initial cost. But now even distribution systems use ZnO arresters due to the present affordable cost. Considering the importance of tests on ZnO arresters which are being increasingly used by Powergrid, NTPC, State Electricity Boards and other power utilities. CPRI has established comprehensive test facility for undertaking tests on Zinc Oxide arresters as per IEC-60099-4 and other relevant standards. All tests prescribed by International/Indian Standards (IEC 60099-4) for Metal oxide arresters without gaps for AC systems can be undertaken. Following tests can be taken up with the newly commissioned Computer controlled Impulse Current Generator supplied by M/s. Haefely Trench, Switzerland with a capacity of 100 kV and 150 kJ

Residual Voltage Tests:

This test can be carried out for the following exponential waveforms:

a) Steep Current Impulse 1/<20 micro second.

Front time : 1 micro second ± 0.1 micro second.

Time to half value : <20 micro second.

Max. Current : 20 kA

Residual Voltage : Upto 40 kV

b) Lightning Current Impulse 8/20 micro second.


Time to half value : 20 micro second ±2.0 micro second.



c) Switching Current Impulse 36/90 micro second.

Front time : > 30 micro second.

Time to half value : approx 2.5 T1.

Max. Current : 2 kA


d) High Current Impulse 4/10 micro second


Time to half value : 10 micro second ± 1.0 micro second.



Long duration rectangular Current Impulses : Transmission line class tests class I to V can be carried out as per IEC 60099-4.

Operating Duty Tests : Operating duty tests as per IEC 60099-4 can be carried out Power frequency voltage V/S Time curve : As per IEC 60099-4 can be carried out.

Ageing test : Ageing test can be carried out as per IEC 60099-4. The generator is exclusively designed as per the specifications drawn by CPRI. This is the first generator developed by M/s.Haefely with all the features combined in one and may be a unique generator in the world.


HV Home




incorporating all conceivable features in a single consolidated design and is perhaps the only one of its

kind in this part of the world. All tests on ZnO blocks as per IEC 60099-4 and IS 3070 including




HV Home






incorporating all conceivable features in a single consolidated design and is perhaps the only one of its

kind in this part of the world. All tests on ZnO blocks as per IEC 60099-4 and IS 3070 including



High Voltage Division - Pollution Laboratory

HV Home

The Pollution Laboratory has dimensions of 12M x 12M x 12M. An array of nozzles confirming to IEC specifications combined with a salt water pumping and air compressor provide the required salt fog. The power supply to the chamber is from one of the outdoor 600 kV, 2,000 kVA Cascade Transformers setup.

Pollution Test on InsulatorEquipment available :

600 kV, 3 Amperes AC source 100 kV, 6 Amperes AC source 150 kV, 1 Ampere DC source

With these equipment/facilities the Pollution Laboratory can carry out tests on insulators and insulator assemblies for systems upto and including 400 kV.

Types of Tests :

Pollution test on insulators by salt fog/solid layer method upto 400 kV AC & 150 kV DC SF6 Puncture withstand test facility for DC insulators Thermal runaway tests on insulators

This Laboratory can undertake these tests as per National & International Standards

Necessity Of Pollution Testing:

With the ever increasing demand for electrical power, there has been a steady growth in high voltage transmission lines required for optimum and economic transfer of large blocks of power over


long distances. As the level of transmission voltage is increased, switching and dynamic over voltages and withstand ability of the insulator under polluted conditions are important factors which determine the insulation level of the system. The reliability of the system mainly depends on the environmental and weather conditions which cause flashover on polluted insulators leading to system outages. It is generally recognized that the main events leading to flashover of polluted insulators under service voltage are the formation of a conductive layer on the insulator surface, leakage current surging with associated dry band formation and partial arc development and arc propagation along the insulator surface eventually spanning the whole insulator. The problem is more complex in case of DC systems because of large contamination due to electrostatic forces and longer duration of partial arc. Therefore the design of external insulation under polluted conditions is very critical and lot of investigations are under way to arrive at safe creepage distances for systems operating in different environments.

The pollution can be broadly classified into two types:

1. Marine pollution found in the immediate neighborhood of the sea and also at considerable distances from coast. 2. Industrial pollution caused by dust, smoke etcObjectives Pollution Investigation :

Collection of pollution flashover data under natural conditions Suitable artificial pollution test under conditions representing natural pollution Design of insulation for pollution conditions. Pollution ageing tests and investigation of causes of failures to arrive at suitable remedies. Pollution performance of composite insulators

Pollution Testing And Research At High Voltage Division : The High Voltage Division of CPRI has established a pollution chamber of size 12m x 12m x 12 m where pollution tests as per IEC BIS can be conducted on all types of external insulation for systems upto 400kV. The power source consists of testing transformers of 600kV, 3.3Amp & a 100kV, 6Amp rating. A DC source of 150kV, 1Amp with thyristorized feed back control system.

Two methods namely salt fog and solid layer are employed to test the insulators under pollution conditions.

In the case of salt fog method, the insulator is energised at the service voltage, which is kept throughout the test and the insulator is continuously subjected to the salt fog whose salinity (expressed in kg of Nacl per cubic meter of water) defines the severity of the test. The series of successive tests, each lasting for one hour, is carried out at the same applied voltage and for various salinities. This is carried out until highest salinity which the insulator withstands is achieved for atleast three tests out of four. The maximum degree of salinity is termed the withstand salinity of the test object.

In the case of solid layer method, the insulator is coated/dipped/sprayed/flowed on with a slurry containing Kaolin and sodium chloride.

1. Wetting before and during energisation, 2. Wetting after energisation

The object of the test is to confirm whether the specified withstand layer conductivity or the specified salt deposit density is withstood at the specified voltage. The insulator complies with this specification if three withstand tests out of four are obtained under the condition examined.

CPRI has been conducting research exhaustively on different aspects of pollution for the last ten years. Pollution level measurements have been carried out along the proposed route of a ± 500 kV DC transmission line of M/S. MSEB

Many research activities have been carried out in collaboration with CESI, Italy and the following are some of the important ones.

1. Effect of pollution flashover with respect to diameter of the porcelain shell 2. Pollution performance of composite insulators 3. Ageing studies on insulator of ceramic & non-ceramic material 4. Pollution test on lightning arrester

Mathematical models for pollution flashover of insulators are widely recognized as efficient tools, which could help in arriving at optimum insulator profiles for polluted areas. A mathematical model of arc under dynamic conditions has been formulated which can predict the safe withstand voltage for a given degree of pollution. Thus CPRI has the capability to study theoretically the pollution performance of insulators.

Pollution performance of insulators under DC voltages has been studied upto a voltage of about 140kV.

CPRI hopes that both the testing and research facilities now established will be used by manufacturers and utilities to solve the problems connected with the design of external insulation under normal and polluted conditions.

Impulse Current Generator 100 kV, 150 kJ

Types of Tests :

All type tests on Zno arrester blocks upto 11 kV As per National and International

Standards

Necessity Of Testing Arrester Blocks :

Lightning arresters, often called Surge Diverters, play a vital role in protecting expensive substation equipment from high voltage surges. These surge voltages originate from either switching operations of substation equipment or lightning strikes. In either case these over voltages have to be

limited well below the insulation levels of the equipment. By R&D, new designs of lightning arresters have emerged, by which, it has become possible to bring down the insulation levels of the equipment resulting in significant savings to the power systems. Till recently gap type arresters were in use in the power system. Even in this type, new concepts were introduced in the design by which one to two step reduction of basic insulation level (BIL) of 145 and 220 kV systems were possible. These arresters are being now replaced by Zinc Oxide (ZnO) Gap-less arresters, (also known as Metal Oxide Surge Arresters). As reported in the literature, these were first developed in Japan and came into use from 1970. The replacement of conventional arresters by ZnO type initially started from system voltages above 145 kV class owing to their high initial cost. But now even distribution systems use ZnO arresters due to the present affordable cost. Considering the importance of tests on ZnO arresters which are being increasingly used by Powergrid, NTPC, State Electricity Boards and other power utilities. CPRI has established comprehensive test facility for undertaking tests on Zinc Oxide arresters as per IEC-60099-4 and other relevant standards. All tests prescribed by International/Indian Standards (IEC 60099-4) for Metal oxide arresters without gaps for AC systems can be undertaken. Following tests can be taken up with the newly commissioned Computer controlled Impulse Current Generator supplied by M/s. Haefely Trench, Switzerland with a capacity of 100 kV and 150 kJ

Residual Voltage Tests:

This test can be carried out for the following exponential waveforms:

a) Steep Current Impulse 1/<20 micro second.


Time to half value : <20 micro second.



b) Lightning Current Impulse 8/20 micro second.


Time to half value : 20 micro second ±2.0 micro second.



c) Switching Current Impulse 36/90 micro second.

Front time : > 30 micro second.

Time to half value : approx 2.5 T1.

Max. Current : 2 kA


d) High Current Impulse 4/10 micro second


Time to half value : 10 micro second ± 1.0 micro second.



Long duration rectangular Current Impulses : Transmission line class tests class I to V can be carried out as per IEC 60099-4. Operating Duty Tests : Operating duty tests as per IEC 60099-4 can be carried out Power frequency voltage V/S Time curve

HV Home

The Pollution Laboratory has dimensions of 12M x 12M x 12M. An array of nozzles confirming to IEC specifications combined with a salt water pumping and air compressor provide the required salt fog. The power supply to the chamber is from one of the outdoor 600 kV, 2,000 kVA Cascade Transformers setup.

Pollution Test on InsulatorEquipment available :

600 kV, 3 Amperes AC source 100 kV, 6 Amperes AC source 150 kV, 1 Ampere DC source

With these equipment/facilities the Pollution Laboratory can carry out tests on insulators and insulator assemblies for systems upto and including 400 kV.

Types of Tests :


Pollution test on insulators by salt fog/solid layer method upto 400 kV AC & 150 kV DC

SF6 Puncture withstand test facility for DC insulators Thermal runaway tests on insulators

This Laboratory can undertake these tests as per National & International Standards

Necessity Of Pollution Testing:

With the ever increasing demand for electrical power, there has been a steady growth in high voltage transmission lines required for optimum and economic transfer of large blocks of power over long distances. As the level of transmission voltage is increased, switching and dynamic over voltages and withstand ability of the insulator under polluted conditions are important factors which determine the insulation level of the system. The reliability of the system mainly depends on the environmental and weather conditions which cause flashover on polluted insulators leading to system outages. It is generally recognized that the main events leading to flashover of polluted insulators under service voltage are the formation of a conductive layer on the insulator surface, leakage current surging with associated dry band formation and partial arc development and arc propagation along the insulator surface eventually spanning the whole insulator. The problem is more complex in case of DC systems because of large contamination due to electrostatic forces and longer duration of partial arc. Therefore the design of external insulation under polluted conditions is very critical and lot of investigations are under way to arrive at safe creepage distances for systems operating in different environments.

The pollution can be broadly classified into two types:

1. Marine pollution found in the immediate neighborhood of the sea and also at considerable distances from coast. 2. Industrial pollution caused by dust, smoke etcObjectives Pollution Investigation :

Collection of pollution flashover data under natural conditions Suitable artificial pollution test under conditions representing natural

pollution Design of insulation for pollution conditions. Pollution ageing tests and investigation of causes of failures to arrive at

suitable remedies. Pollution performance of composite insulators

Pollution Testing And Research At High Voltage Division : The High Voltage Division of CPRI has established a pollution chamber of size 12m x 12m x 12 m where pollution tests as per IEC BIS can be conducted on all types of external insulation for systems upto 400kV. The power source consists of testing transformers of 600kV, 3.3Amp & a 100kV, 6Amp rating. A DC source of 150kV, 1Amp with thyristorized feed back control system.

Two methods namely salt fog and solid layer are employed to test the insulators under pollution conditions.

In the case of salt fog method, the insulator is energised at the service

voltage, which is kept throughout the test and the insulator is continuously subjected to the salt fog whose salinity (expressed in kg of Nacl per cubic meter of water) defines the severity of the test. The series of successive tests, each lasting for one hour, is carried out at the same applied voltage and for various salinities. This is carried out until highest salinity which the insulator withstands is achieved for atleast three tests out of four. The maximum degree of salinity is termed the withstand salinity of the test object.

In the case of solid layer method, the insulator is coated/dipped/sprayed/flowed on with a slurry containing Kaolin and sodium chloride.

1. Wetting before and during energisation, 2. Wetting after energisation

The object of the test is to confirm whether the specified withstand layer conductivity or the specified salt deposit density is withstood at the specified voltage. The insulator complies with this specification if three withstand tests out of four are obtained under the condition examined.

CPRI has been conducting research exhaustively on different aspects of pollution for the last ten years. Pollution level measurements have been carried out along the proposed route of a ± 500 kV DC transmission line of M/S. MSEB

Many research activities have been carried out in collaboration with CESI, Italy and the following are some of the important ones.

1. Effect of pollution flashover with respect to diameter of the porcelain shell 2. Pollution performance of composite insulators 3. Ageing studies on insulator of ceramic & non-ceramic material 4. Pollution test on lightning arrester

Mathematical models for pollution flashover of insulators are widely recognized as efficient tools, which could help in arriving at optimum insulator profiles for polluted areas. A mathematical model of arc under dynamic conditions has been formulated which can predict the safe withstand voltage for a given degree of pollution. Thus CPRI has the capability to study theoretically the pollution performance of insulators.Products Wise Testing :

Protocol Test:



Cable Test :

Paper/PVC/XLPE/EPR Power cables of Voltage rating up to 220 kV Cable accessories, etc

(The above Equipments are tested at DCCD- Bangalore, STDS-Bhopal, and




RTL-Noida)

Capacitor Test:

HV Shunt capacitors



LV Motor capacitors







Electric cables



Cable trays

Channels

Feeder pillar boxes

Energy meter covers

Terminal blocks

Bushings


PVC conduit pipes

Flooring materials

Fabrics/curtain














Power Transformer


Power cables

EHV CTs, / CVTs

Resin Cast CTs


High Power Test :



High Voltage Fuses


Terminal Boxes


Power Transformers





Lightning Arresters

Insulator Strings



Reactors

Line traps




LV Circuit Breaker






Battery Container

Rubber Mats





Fuses

Switches

Starters

Control Switches


Power Connectors

Spacers

Bus bars









Bus ducts

CT's conductors

Transformer


Capacitors

Grading Capacitors

R.V.T.S

C.T – PT UNITS


Line Traps



THYRISTOR VALVES



Isolators


HT fuses

Surge arresters

Reactors

Auto-reclosures

DC Breakers

HT switchgear panel

Motor terminal box


HV Contactors


Circuit Breakers for Over current protection for household & similar

installations




Air break switches, Air break disconnectors, air break switch disconnectors,

fuse combinations for voltage not exceeding 1000V


Composite unit of air break switches for rewirable type switches for voltage

not exceeding 650V, AC21, 100A









Lubricating Oil

Transformer Oil

Polymers etc.


Materials Test :

Coal






Line material


Compression Clamps

Mid Span Joints








Structural Steel

Steel Wire ropes



Load Cell

Line Material

Terminal Clamp

Structural Steel


Insulators & Insulator Strings of Single/ Twin/ Triple/ Quad-Tension or

Suspension type upto and including 800kV rating







Conductors



Energy Meter




Calibration Tests :



Multimeters







Data Loggers



Process calibrators


Current Clamps

Thermometers


(The above Equipments calibration tests are conducted at ID- Bangalore, STDS-

Bhopal)

Test :

Relay



Three Phase Four Wire / Three Phase Three Wire Electromechanical / kWh /

TVM Static / Electronic Energy Meters





All Electronic equipments, like Static Relays, Breakers, contactors, starters,

Electronic ballast, Medical equipments


Battery Testing :












All types of electrical equipment enclosures such as- Outdoor distribution boards Relay units/Panels Control Cubicles for PCVCB Switching & Control System enclosures RMV panels HT Metering & Switching Panel AC Distribution Board EWM Enclosures Platform Power Supply LT Panel Disconnecting Switch Assembly Junction Boxes LV switch Board AD/DC Panel weatherproof Switch Enclosures Dry type Transformer enclosures PCC Panel, MCC Panel, Bus Ducts DOL Starters Integral Starter Control Panel Electricity Metering Equipment Enclosures Actuators Telecommunication Equipment Enclosures Antennas Cable Connector Assembly GPRS Equipment Enclosures Battery Charger Panels Medical Health Monitoring Equipment Enclosures Drive Mechanism Box Marshalling Kiosks Surge Monitors MOM's Belt sway Switch Enclosures Reactor assembly Enclosures Starter Motors Sot Starter Panels



RAPCONS BAPCONS


Enclosures of Induction Motors Valve Actuators DC Machines AC Machines Alternators Generators Vibratory Electric Motors Large Motors Automobile Electrical Motors Traction Motors Power Tool Motors Pumps (motors) Etc.





Luminaries :




Lamp Ballast


Fan Testing :









Refrigerators :



DCCD - DIAGNOSTICS LABORATORY

DCCD Home

The Laboratory has facilities for conducting condition assessment / life

evaluation of HV Power Equipment like Power Transformers, Hydro & Turbo

Generators, Power Cables, Large AC Motors, Current Transformers (CTs), Capacitance

Voltage Transformers (CVTs) etc. in service. The Laboratory has adequate experience

& expertise in conducting Residual Life Assessment (RLA) Studies on High Voltage

Substation and Power Plant Electrical Equipment in service. Diagnostic Laboratory is

an accredited laboratory as per ISO 9001-2000 quality management system for

undertaking field engineering services and consultancy for various utilities.

CPRI Mobile Field testing laboratory Partial Dis charge Test on 110MW Turbo Generator

TEST / EQUIPMENT FACILITIES :-

o Recovery Voltage meter

o Electromagnetic Core Imperfection detector (ELCID)




o HV Dielectric Spectroscopy

o VLF Cable Diagnosis system

o Transformer ratio arm bridge

o Standard Capacitor, 80kV

o Precision microprocessor based Insulation tester, up to 5 kV

o Automatic Capacitance & tan delta test system

o Surge comparison tester – 12 kV

o DC Test kit – 70kV

o Partial Discharge Detection system

o Electronic Wedge mapping equipment

o Rotor Reflectometer

o Testing Transformers

CONSULTANCY :-

1. Consultancy through Field Testing.

a. Test facilities for undertaking condition monitoring & diagnostic tests

on HV Power Equipment in order to assess the state & condition of

their insulation systems.

b. Mobile Field Testing Laboratory with diagnostic test facilities for

conducting diagnostic tests on HV Power Equipment at site

c. Failure analysis of HV Power equipment

2. Involved in Renovation & Modernization (R & M) & Residual Life

Assessment (RLA) / Life Extension (LE) studies on Thermal / Hydro Power

Plant Electrical Equipment.

DIAGNOSTIC TESTS :-

Product / Apparatus Type of Tests conducted

§ Power Transformer

Frequency Domain Analysis

Dielectric loss angle at 50 Hz

Polarization Index Test

Capacitance at 50 Hz

Recovery Voltage Test

Surge Comparison Test

Partial Discharge Test

§ Generators / Large

motors

Stator

Rotor



ELCID Test


DC Leakage current Test


Conductor resistance Test

Surge Comparison Test

Wedge mapping Test


Recurring Surge Oscillogram (RSO

Test)

Conductor Resistance Test

Field Impedance test

Power cables

Frequency domain analysis



VLF tan delta test

DC Leakage current test

EHV CTs, / CVTs Dielectric loss angle at 50 Hz



Resin Cast CTs

(Up to 33kV)

Insulation Resistance / Polarization

Index

Tan-delta & Capacitance


Resin Cast PTs

(Up to 33kV)


NATIONAL / INTERNATIONAL STANDARDS / GUIDELINES :-

Apparatus /

Equipment

Standards / Guidelines

Power Transformer IEEE 62-1995 - IEEE Guide for Diagnostic Filed

Testing of Electrical Power Apparatus-Part 1: Oil

filled Power transformers, Regulators and Reactors

Generator / Motors

Stator

Rotor

IEEE 43-2000 – IEEE Recommended practice for

Testing IR of Rotating Machinery

IEEE 95-2002 – IEEE recommended practice for

Insulation testing of AC Electric machinery with High

Direct Voltage

IEEE 1434-2000 – IEEE Trial use guide to the

measurement of partial discharges in rotating

machinery.

Power Cables As per National/International practices and as per

Clients requirement

CTs & CVTs As per National/International practices and as per

Clients requirement

RESEARCH :-

Infrastructure to undertake R&D, in the areas of Functional evaluation of

a) Paper – oil insulation system

b) Power Cable insulation system

c) Rotating Machine insulation system

RLA Studies on Hydro Generator ELCID Test on 110 MW Turbo Generator

Stator winding

RVM Test on 15.75kV/220kV, Winding Resistance test on 15.75kV/220kV, 250MVA Generator Transformer 250MVA Generator Transformer

Partial Discharge Test on HV Motor Tan delta Test on Transformer

Tan delta Test on sub-station equipment ELCID test on Hydro Generator Stator Winding

Dielectric Spectroscopy Test on Tan-Delta Test on Generator Transformer

Distribution Cables (MV)

CLIENTELE :-

SOLID DIELECTRIC LABORATORY

DCCD Home

The Dielectric laboratory has comprehensive testing and evaluation facilities on

insulating materials and systems. Insulating materials are evaluated and test for

electrical, mechanical, physical and electro chemical properties. The Dielectric

laboratory has undertaken consultancy work and sponsored projects for different

power utilities and industries. Evaluation of class “H” insulation for traction motors

and compatibility studies on enameled winding wires and varnished were two

projects completed for RDSO, Ministry of Railways. Assistance has been rendered to

BIS in formulation of various standards on insulating materials and systems and on

enameled winding wires.

Facilities available:

- Micro processor based UTM 50KN capacity (-700C to2000C).

- High resistance meter upto 10-16

- SIGMA Tester.

- Automatic tracking comparator upto 1000VAC.

- Arc resistance tester.

- Rubber glove tester

- Complete equipment for evaluation of enameled winding wires as per relevant

parts of IS/IEC standards.

- Power frequency capacitance and dissipation factor measuring bridges, NBS smoke

box

- High frequency capacitance and dissipation factor measuring bridges.

- Electrometer

- High pressure chamber for conducting investigation on gaseous dielectrics upto 5

bars

- Static Decay meter

- Tear Tester

- Surface Roughness Meter


- Gas Chromatography/Mass Spectrometer

- Impact Tester

- Stress Cracking Equipment

- Compression Molding machine (4000C)

- Micro - OHM Meter.

- Liquid contaminant tracking and erosion test equipment

AREAS OF WORK :

- Electrical and mechanical tests on conductors, electrical, mechanical and chemical

tests on various solid insulating materials like paper, press board, polymeric molding

materials. B stage epoxy mica and epoxy glass materials etc.

- All tests on enameled/winding wires including endurance tests.

- Studies on gaseous dielectrics.

- Electrical tests on cable filling compound, capacitor fluids etc.

- Tests on Teflon, polypropylene, polyester, kapton films.

- Electrical tests on antistatic materials.

Documents

DCCD1