CURRENT TRANSFORMER TESTING

Major Testing Facilities

Transformer Testing

CT Testing

PT Testing

Reactor Testing

Other Electrical Product Testing

CURRENT TRANSFORMER TESTING

Instrument Transformers (CTs and PTs) have wide application in metering and protecting the power system. Indigenously manufactured transformers have a wide range of ratings.

 Test Facilities

1. Determination of errors according to the appropriate accuracy class
2. Verification of terminal marking and polarity
3. Temperature rise test
4. Measurement of winding resistance
5. Instrument Security current test
6. Composite error test
7. Knee point voltage and excitation current test
8. Power frequency dry withstand test on primary winding
9. Power frequency dry withstand test on secondary winding
10. Power frequency voltage withstand test between sections
11. Over voltage inter-turn test
12. Turns ratio test
13. Determination of secondary loop time constant
14. Short time current test
15. Lightning impulse test
16. Measurement of Capacitance and loss factor (Tan delta) of current transformer
17. Partial Discharge test

For Current Transformer Testing:- 

Applicable standard

1)      For current transformer: IS 2705, IS 16227, IEC 61869