::Electrical Research and Development Association::

Electrical Research and Development Association
Specialised Testing Facility
120 kA On Line Circuit Test Facility
On Line Short Circuit and High Voltage Test Facility
Field Services
Mobile Test Laboratory
Centre of Excellence for Rotating Machines
Solar Photovoltaic
 
 
 
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On Line Short Circuit and High Voltage Test Facility
 
Introduction
A wide variety of Electrical materials, Equipment and Component are used in Power generation, Transmission and Distribution networks and the country has attained self sufficiency in manufacturing all these materials, equipment and components. To ensure high quality of these equipment, testing has to be carried out as per national, international or user specified specifications to qualify them for their intended applications. Thus availability and access to highly sophisticated testing facilities is a prerequisite for ensuring high quality of materials / products.

Electrical Research and Development Association (ERDA), the R&D Institution of the Indian Electrical Industry was established to provide a wide range of sophisticated testing facilities, many of which are too expensive for individual manufacturer to establish and operate. Amongst the test facilities established at ERDA “On line Short Circuit Testing” and “High voltage Impulse Testing”, facilities together meet majority of testing needs of the industry under one roof. This brochure highlights these two facilities.

Recognitions
National Accreditation Board for Testing and Calibration Laboratories (NABL), Govt. of India, Dept. of Science & Technology
Intertek Testing and Calibration Services Ltd., (ASTA), U. K.
Bureau of Indian Standards (BIS)
Underwriter’s Laboratories (UL)
CARAT Certificate from TUV-PS, Germany
Govt. of India, Ministry of Scientific & Industrial Research
Govt. of India, Ministry of Finance, Dept. of Revenue
Govt. of India, Director General Factory Advice & Labour Institute
Govt. of Gujarat, Commissioner of Electricity
Govt. of Gujarat, Chief Inspector of Steam Boilers and Smoke Nuisances.
Govt. of Maharashtra, Charity Commissioner
Electricity Utilities of the States of Gujarat, Maharashtra, Madhya Pradesh, Punjab etc.
High Voltage Impulse Testing
  AT MAKARPURA AT SAVLI
Impulse Voltage Generator 1200 kVp (60 kJ), 800 kVp (40 kJ) 1600 kVp (80 kJ)
Impulse Voltage Divider 1200 kVp, 800 kVp, 300 kVp 1600 kVp
H. V. A. C. Transformer 600 kVrms 700 kV
Multiple Chopping Gap 1200 kVp 1600 kVp
Low Resistance Non Inductive Shunts 0.1, 0.5, 1.0 Ω 0.1, 0.5, 1.0 Ω
Digital Impulse Oscilloscope 12 Bit Nicolet with software 14 Bit Nicolet with software
PD/RIV Measurements PD / RIV Measuring Instrument PD / RIV Measuring Instrument
Sphere gaps 500 mm sphere gap 750 mm sphere gap
Tests
HV Lightning Impulse test
HV Dry / Wet Power frequency test
Capacitance and Tan delta measurement
Partial discharge measurement
Insulation Resistance / Polarization index
Losses and Temperature rise tests
RIV, Corona measurement
HV Calibration, CT/PT Calibration
Measurement of Earthing system
Voltage Distribution Test on String Insulators
Recovery Voltage / Acoustic emission tests
RLA / Condition Monitoring at site
HV AC/DC & Impulse Calibration at site
Calibration of Impulse test system at site
Products Covered
Power & Distribution Transformers,
Insulators, Bushings, Isolators
HV Switchboards, Breakers
Transmission Line Hardware’s
HT Cables, Joints, Accessories
LT/HT Capacitors
SLightning Arresters
400 kV Transmission line hardware under RIV Test
400 kV Current Transformer under High Voltage Test
India's Largest On Line Short Circuit Testing Facility
ERDA has two on-line short circuit test facilities: 50kA on-line short circuit test laboratory at Makarpura and 120kA on-line short circuit test laboratory at Savli
Infrastructure
50kA, 525V, Makarpura Laboratory 120kA, 570V, Savli Laboratory
66/11 kV Short Circuit Transformer 132/33 kV Short Circuit Transformer
Voltage variation from 82 % to 120 % Voltage variation from 82 % to 120 %
11/0.436 kV, 60 kA Short Circuit Transformer, 33/0.475 kV, 120 kA Short Circuit Transformer,
Sequential Timer with timing of 0.1 millisecond to 9999 seconds & 32 Channels with point on wave switching. Sequential Timer with timing of 0.1 millisecond to 9999 seconds & 32 Channels with point on wave switching.
Digitizer – 8 Channels Digitizer – 8 Channels
Coaxial Shunt, Non-inductive, 80 kA rms. Coaxial Shunt, Non-inductive, 150 kA rms.
66 kV Sub station/Supply line. 132 kV Sub station/Supply line.
Fault level of 1200 MVA at ERDA. Fault level of 3000 MVA at ERDA.
Control Room of Short Circuit Laboratory
120 kA Short – Circuit Transformer
 
Products
Sr Products Standard Facilities at 50 kA, 525 V S.C. Test Laboratory at ERDA, Makarpura Facilities at 120kA, 570 V S.C. Test Laboratory at ERDA, Savli
1 LV ACBs & MCCBs IEC:60947-2-2006
IS/IEC: 60947-2-2003
2000 A, 415 V
upto 50 kA
6300 A, 500 V
upto 120 kA
2 LV Switches, Disconnectors, SFUs IS/IEC: 60947-3-1999
IEC: 60947-3-2005
500 A, 415 V
upto 50 kA
800 A, 500 V
upto 120 kA
3 Contactors and Motor Starters IS: 13947-4-1993
IEC: 60947-4-2005
800 A, 415 V
upto 50 kA
800 A, 500 V
upto 120 kA
4 Low Voltage Fuses (HRC) IS: 13703-1-1993
IEC: 60269-1-2005
800 A, 415 V
Upto 50 kA
800 A, 500 V
upto 120 kA
5 Low Voltage Switchgear & Controlgear Assemblies IS: 8623-1&3-1993
IEC: 61439-1-2009
IEC: 61439-2-2009
50 kA for 1 sec. & 31.5 kA for 3 secs. 120 kA for 1 sec. & 70 kA upto 3 secs.
6 Electric Power Connectors IS: 5561-1970 50 kA for 1 sec. & 31.5 kA for 3 secs. 120 kA for 1 sec. & 70 kA upto 3 secs.
7 Distribution Transformers IS: 2026-1-1977
IS: 1180-1989
IEC: 60076-5-2006
Upto 1600 kVA, 11 kV
Upto 500 kVA, 22 kV
Upto 500 kVA, 33 kV
Upto 1000 kVA, 11 kV
Upto 1000 kVA, 22 kV
Upto 4000 kVA, 33 kV
8 Current Transformers IS: 2705 (Pt.1 to 4)-1992
IEC: 60044-1-2003
145 kV, 31.5 kA for 1 sec. 400 kV upto 50 kA for 3 secs.
9 HT Isolators with and without Earth Switches, A.B. Switches IS: 9920-2002,
IS: 9921-1985
IEC: 62271-102,
IEC: 60265-1-1998 & IEC: 60265-2-1998
145 kV, 31.5 kA for 1 sec. 245 kV upto 40 kA for 3 secs.
10 HT/LT Cables IEC: 60502-2-2005
IS: 7098-2-1985
IS: 9968-2-2002
IS: 1554-2-1988
Upto 26.3 kA for 3 secs. Upto 70 kA for 3 secs.
11 MCBs IS: 8828-1996
IEC: 60898-1-2003 & IEC: 60898-2-2003
All ratings All ratings
12 RCCBs/RCBOs IS: 12640-1-2008
IS: 12640-2-2008
IEC: 61008-1-2006 & IEC: 61009-1-2006
All ratings All ratings
13 HT Panels IS-3427-1997
IEC-62271-2007
50 kA for 1 sec. & 31.5 kA for 3 secs. 120 kA for 1 sec. & 70 kA upto 3 secs.
14 Panels - Internal Arc Tests IEC-61641-2008 50 kA, 500 V 120 kA, 500 V
15 Rewirable Fuses IS: 2086-1993 All ratings All ratings
Other test facilities
All routine test facilities, pre and post test facilities for transformers, current transformers and switchgear products.
Associated Services
Infrastructure for bringing large trailer loaded apparatus for testing.
8 Ton mobile crane at Makarpura and 12 Ton mobile crane at Savli
3 Ton fork lift at Makarpura and 5 Ton fork lift at Savli
Type test facilities for electrical products up to 400 kV class.
Condition monitoring
RLA studies
Failure investigation
Calibration
20kA temperature rise test facility
Products Covered

Air Circuit Breakers, Moulded case Circuit Breakers, Switches, Disconnectors, Fuse combination units, Contactors, Motor Starters, Control Contactors, Miniature circuit breaker, Residual current operated circuit breakers, Low voltage fuses, Semi-conductor fuses, Rewirable fuses, D-type fuses, Enclosed distribution fuse boards and cut-outs, Electrical power connectors, Metal enclosed switchgear and controlgear, H.V. Air Break Switch, Isolators, Earthing switches, HT & LT Cables. Current Transformers, 11 kV, 22kV and 33kV Distribution Transformers etc. 

Research & Development Activities
Sponsored Research studies are taken up on topics like Power System grounding, Lighting Performance, impulse breakdown etc. 
Some of the major projects completed and in progress are:
Enhancement of Short Circuit level of Air circuit Breaker.
Remote operated 11 kV load break switch and MCCBs.
Transient response of 400 kV CT.
Power System grounding
Failure investigation of Insulators
Impulse Breakdown studies on Transformer oil & SF6 gas.
Measurement of Electric Field & Magnetic Field of Transmission line
Studies on Rotating Machine Stator coils
Pollution Studies on insulators
Design of earthing grid for power stations
Condition Monitoring of Lightning Arresters.
ERDA Short Circuit Laboratory Key Line Diagram

ISI - ISOLATOR
B1 - SF6 CIRCUIT BREAKER
T1 - SHORT CIRCUIT TRANSFORMER
CTPT - CURRENT & POTENTIAL TRANSFORMERS
IS2 - ISOLATOR
B2 - CIRCUIT BREAKER(BACK UP)
B3 - CIRCUIT BREAKER (HT MAKE SWITCH)
CL - CHANGE OVER LINK
S1 - SHUNTS
T2 - SHORT CIRCUIT TRANSFORMER
Z - LOAD BANKS
L - REACTIVE LOAD
R - RESISTIVE LOAD
Z1 -  LT LOAD BANK
T01 - TEST OBJECT (LT SWITCHGEAR PRODUCT)
T02 - TEST OBJECT (DIST. TRANSFORMER)
M - LT MAKE SWITCH
S2 - SHUNTS
 
 
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