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How reverse power relay sense the power is reverse in the
system.
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Answer Posted / mahendra
Reverse power relay which acts according to the direction
of current flow.
For Example : it is normally used in Generator protection.
because generator produce power ie it gives the current.
when the generator speed reduced, load decreaes to zero
gradually, power will flow into the generator & act as a
motor if the Generator circuit breaker is not opened.
This is sensed by the CT, direction of the flow of current.
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