I am getting differential earth fault in my transformer
realy , i have checked all its CT & control wiring but do
not get fault, Please help

Answer Posted / k.prakashchandra

I think it is REFR which picks up only if there is earth
fault whithin the transformer .i.e. between LT an HT
CTs.and an NCT is to be provided

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What happen if we apply square wave or traiangular waveform voltage to the transformer primary winding instead of sinusoidal wave?

1644


what is inverter and converter

1439


If there is major % of Voltage harmonics in the system, how can it be control or reduced?

1571


What is George phenomena to start the synchronus machine?

3651


Use of switch mode power converter in real-time basis?

636






What is cross over distortion? How it can be eliminated?

785


what is vA rating and class of a ct.

1428


by what factor the starting current is used when comparing star and delta connection for motor starting?

1586


I want formula to calculate current loss with distance in km.I searched many sites but didn't right answer.Plz reply me

1565


any one can explain the stages of a knee point which is taken during ct magnetising curve.

1323


explain different losses in a transformer.

661


do you have some of interview Questions in power and genrator section in general whith answers

1646


what is the main function of capacitors in mccs.

1273


Which is the largest hydropower station in the world?

625


Draw the DOL starter and star delta starter drawing?

2521