What is PF? Formula for calculating PF in HT side?

Answer Posted / nagesh.patwari

It is ratio of True Real Power to Apparent power.
Cos phi = KW/KVA = R/Z = True Real Active Power / Apparent power

KW = sq root of 3 x V x i x Cos Phi

hence cos phi = KW / ( sq root of 3 x V x I)

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