Answer / k.prakashchandra

The voltage and current measurements are fed to distance
relay.Z=V/I.During fault V decreases and I increases. Then
value of Z decreases.The relay is set to trip for a certain
low value of Z.So the relay does not trip at zero current
but at zero voltage.Connections are to be done as per the
instructions.

We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power factor setting : 0.90, then winding temp. Low. but when setting done : 0.83, then Winding temp. increase. WHY Why ? ? ?, plz give me answer.

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