kW to kVA calculation formula
S(kVA) = P(kW) / PF
The apparent power S in kilovolt-amps (kVA) is equal to the real power P in kilowatts (kW), divided by the power factor PF.
So,
kVA = kW / PF
kilovolt-amp = kilowatt / PF
For example:
Power (P) = 7kW
PF = 0,7
Power (S) = 7kW / 0,7 = 10kVA
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