Sir We have a REF relay connected to 10MVA(Y-Y) Transformer.on
External earth fault REF relay trips along with earth fault
relay.The REF relay has no complant as we tested relay.Why is
it happening?
- 3 Answers
- 5270 Views
- KSEB, I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
The NCT is responsible..The ungrounded lead from The NCT may
be grounded.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is the difference between DOL starter and star delta starter
What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?
How to define Kirchhoff current law and voltage law along with simply examples.
Is the installation of the filter cloths necessary before spreading the gravels at the transformer yards?
what are the sample questions asking to the test cunducting for electrical superwising lisence test?
xpression 'document.FrmQF.myemail' [
1. what is usage for power factor in industries?? 2.why we need to monitor power factor??
Explain advantages of storage batteries
WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB
In how we connect watt meter for open & short circuit test of a single phase transformer.
WHY THREE PHESE SYSTEM VOLTAGE APPLIED IN 440 VOLT
what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?
how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64
How to resolve if Diesel generator stop while running ?
How to calculate the electrical load for a standard telecom BTS shelter and choose the DG set capacity for the same load?
