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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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Answer Posted / rajnikant dodiya
Simple,
power factor increse, current decrese ane hence losses
(I^2R) reduces. But if Power factor reduces, losses
increases with square of current which makes dg to be hot
compared to increase pf.
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