Answer / vijay

check mpcb rating, it may be under rated else take megger test

Answer / kiran

what will be the motor rating and weather it is connected to load or no loaded...?
if there is no load then check for motor,
if it is loaded then check for mpcb and also check for mpcb is good or bad..then replace new mpcb of proper rating..

Answer / kiran

use megger and test for shorted ground and chech resistance of the winding.

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