What is the thumb rule for calculating the P.F correction
Capacitor?? Say for 100 hp motor how much micro farad
Capacitor is needed .... Thumb rule so quick answer wanted

Answer Posted / rajnikant

First convert HP into KW.
1HP = 746 KW

Then assuming 0.8 powerfactor of motor,calculate KVA

KVA = KW x powerfactor

now calculate kvar by using following

KVAR = square root of (square of kw - squre of kva)

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