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through which medium return supply given to
alternator please answer in details



through which medium return supply given to alternator please answer in details..

Answer / k.prakashchandra

In case of LT ,it is the the neutral wire and in case of HT
,the earth/ground is the return path for earth fault current
upto primary of UGT which is delta/star connected.Beyond UGT
earth fault current causes imbalance in phase currents of
gen,resulting tripping of gen on earth fault relay.

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