120 kA ON-LINE SHORT CIRCUIT TEST FACILITY


Front View of 120 kA On-line Short Circuit Test Facility Complex at GIDC Savli, District: Vadodara (Gujarat)

 

 

ELECTRICAL RESEARCH AND DEVELOPMENT ASSOCIATION
(ACCREDITED BY NABL, GOVT. OF INDIA.)

120 kA On-line Short Circuit Test Facility

 

Plot: K-V-2/A, GIDC Savli, Manjusar, Dist. Vadodara  – 391 775

 

Head Office

ERDA Road, GIDC, Makarpura,
Vadodara – 390 010, India

Tel. +91(0265) 2642942, 2642964, 2642377,

3043128-3043131, Fax: +91 (0265) 2638382, 2644923

E-mail:

erdasvl@erda.org, erda@erda.org; dir@erda.org; plv@erda.org; phv@erda.org; ene@erda.org; ins@erda.org; mtd@erda.org; tdc@erda.org : Website: http://www.erda.org

 

Registered Office   

Brabourne Stadium, 
87, Veer Nariman Road,
Opp. Ambassador Hotel
Mumbai – 400 020, India
Tel.+91 022 22820622, 22815376
Tele Fax: +91 022 22815376
e-mail:berda@bom8.vsnl.net.in

 

OVER THREE DECADES OF SERVICE TO INDUSTRY AND UTILITIES

 

INTRODUCTION

 

A wide variety of electrical equipment such as Power Transformers, Current Transformers, Switchgear & Controlgear products, Cables etc. are used in transmission and distribution network of the power sector. The conformance of these products to standards/specification is crucial for the reliability and safety of electrical equipment. The availability and access to highly sophisticated testing facilities is a pre-requisite for ensuring high quality of materials and products. ERDA has established many testing facilities for testing large variety of materials and products.

 

“On-line Short Circuit Test Facility” for LT Switchgear upto 50 kA, 525 V and 1.6 MVA, 11 kV and 500 kVA, 22 & 33 kV Transformers is one such major facility set up by ERDA at its Makarpura, Vadodara complex. ERDA’s 50 kA Short Circuit Testing Laboratory is a well-known independent laboratory for testing and certification of medium and low voltage components used in the electrical infrastructure. It conducts tests and issues Type Test Certificates and Test Reports for tests on Cables and Connectors, Distribution Transformers, Instrument Transformers, Switchgear, Panels and other components. It is being utilized by the various industries, power utilities and certifying bodies, BIS for the last 10 years. Other prominent users include UL, Intertek Testing and Certification Ltd., (ASTA-BEAB), U.K. etc.

 

ERDA has now established an “On-line Short Circuit Test Facility” of capacity upto 120 kA, 570 V at Savli for LT Switchgear and Distribution Transformers up to 4 MVA, 33 kV rating. It is the largest on-line short circuit test facility in India. It has state-of-the-art equipment and infrastructure and happens to be one of the most modern Short Circuit Test Facilities in the world. It has two test bays available and two customers can work in parallel. Commercial testing of various electrical products has started in this laboratory. With this facility, ERDA is able to serve the electrical industry and utilities more efficiently.

 

RECOGNITIONS

 

·         Intertek Testing and Certification Ltd., (ASTA-BEAB),UK

·         Underwriters’ Laboratories (UL)

·         Govt. of India, Dept. of Science & Technology, National Accreditation Board for Testing and Calibration Laboratories (NABL)

·         Bureau of Indian Standards (BIS)

·         IECEE-CB of International Electro-Technical Commission

·         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

·         Utilities of Gujarat, Maharashtra, Rajasthan, Madhya Pradesh, Punjab, Haryana, Jammu & Kashmir, Tamil Nadu, Uttar Pradesh and Chhattisgarh etc.

Control Room

 

INFRASTRUCTURE

 

120 kA Short Circuit Laboratory at Savli

50 kA Short Circuit Laboratory at Makarpura

·      132/33 kV Short Circuit Transformer: Voltage variation from 82 % to 120 %

·      66/11 kV Short Circuit Transformer: Voltage variation from 82 % to 120 %

·      33/0.475 kV, 120 kA Short Circuit Transformer: Low impedance

·      11/0.475 kV, 120 kA Short Circuit Transformer: Low impedance

·      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, 150 kA rms.

·      Coaxial Shunt, Non-inductive, 70 kA rms.

·      132 kV Sub station/Supply line at Savli.

·      66 kV Sub station/Supply line at Vadodara.

·      Fault level of more than 3000 MVA at ERDA.

·      Fault level of more than 1500 MVA at ERDA.

 

TESTS

 

    Distribution Transformers:

·   Thermal & Dynamic ability to withstand short circuit tests upto 33 kV, 4000 kVA distribution transformers

·   Thermal & Dynamic ability to withstand short circuit tests upto 11 kV, 1600 kVA distribution transformers

·   Thermal & Dynamic ability to withstand short circuit tests upto 22 kV, 500 kVA distribution transformers

- Current Transformers:

·   Short time withstand current test upto 400 kV class, 70 kA for 3 Seconds or 120 kA for 1 sec.

- Switchgear & Controlgear Products:

·   120 kA, 570 V Short circuit making & breaking capacity.

·   120 kA for 1 sec. or 70 kA for 3 sec. short time withstand current test

·   120 kA, 570 V breaking capacity for HRC fuse link.

·   Performance of integrally fused circuit breaker.

·   All other pre & post tests as per National and International Standards.

120 kA Short – Circuit Transformer

PRODUCTS COVERED 

Sr. No.

Products

Standard

IS/IEC

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

13947-2-1993/ 60947-2-2006

2000 A, 415 V

upto 50 kA

6300 A, 500 V

upto 120 kA

2

LV Switches, Disconnectors, SFUs

13947-3-1993/ 60947-3-2001

500 A, 415 V

upto 50 kA

800 A, 500 V

upto 120 kA

3

Contactors and Motor Starters

13947-4-1993/ 60947-4-2002

800 A, 415 V

upto 50 kA

800 A, 500 V

 upto 120 kA

4

Low Voltage Fuses (HRC)

13703-1-1993/  60269-1-2005

800 A, 415 V

Upto 50 kA

800 A, 500 V

upto 120 kA

5

Low Voltage Switchgear &  Controlgear Assemblies

8623-1-1993/  60439-1-2004

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

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

2026-1-1977 & 1180-1989/ 60076-2000

Upto 1600 kVA, 11 kV

Upto 500 kVA, 22 kV

Upto 500 kVA, 33 kV

Upto 500 kVA, 11 kV

Upto 500 kVA, 22 kV

Upto 4000 kVA, 33 kV

8

Current Transformers

2705 (Pt. 1 to 4)-1992/ 

60044-1-2003

145 kV, 31.5 kA for 1 sec.

400 kV upto 120 kA for 1 sec. & 70 kA for 3 secs.

9

HT Isolators with and without Earth Switches, A.B. Switches

9920-2002 &

9921-1985/ 60265-1-1998 &  60265-2-1998

145 kV, 31.5 kA for 1 sec.

400 kV upto 120 kA for 1 sec. & 70 kA for 3 secs.

10

HT/LT Cables

---

Upto 26.3 kA for 3 secs.

Upto 70 kA for 3 secs.

11

MCBs

8828-1996/ 60898-1-2003 & 60898-2-2003

All ratings

All ratings

12

RCCBs/RCBOs

12640-1-2000 & 12640-2-2001/ 61008-1-2006 & 61009-1-2003

All ratings

All ratings

13

HT Panels

IS-3427-1997/ IEC-62271-2001

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-61641-1996

50 kA, 500 V

120 kA, 500 V

15

Rewirable Fuses

2086-1993

All ratings

All ratings

ASSOCIATED FACILITIES 

·          Impulse Test 1200 kV

·          High Voltage one minute Power Frequency Test Dry & Wet 600 kV

·          Type Test facilities for Distribution Transformers

·          Type Test facilities for Current Transformers

·          Temperature Rise Test upto 4000 A

·          Mechanical Durability

·         Electrical Durability

·         Rated Making & Breaking Capacities

·         Conventional Operational Performance

·         Time Current Characteristics

·         Mechanical Strength of Terminals

·         28 Days Test – for MCB & RCCB

·         Resistance to Abnormal Heat and Fire

·         Protection against Electric Shock

·        Resistance to rusting

·        Environmental Tests

·        Moisture Resistance (humidity) Test

·        IP tests (Degree of protection) 40 Ton

·        Dynamic Testing of the Relays

·        EMI/EMC Test Facilities for “CE” marking

·        ERDA can witness tests on HV Circuit Breakers for Mechanical Endurance, Temperature Rise Test, Dielectric Test at manufacturer’s premises.

·          14 & 8 Ton Mobile Crane

·          2 Ton Forklift

·          Condition Monitoring

·          RLA Studies

·          Failure Investigation

·          Calibration

RESEARCH & DEVELOPMENT ACTIVITIES 

·         Short Circuit Withstand Test superimposed on Temperature Test at 50 kA for 1 sec.

For further details, write to:
Director, ERDA. (dir@erda.org; erda@erda.org, erdasvl@erda.org)