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Power Factor Definitions

Power Factor

The ratio between the KW of the load and the KVA of the load.

KW - KiloWatt

The real power in the load in thousands of watts.
Single phase KW = V x A x pf / 1000
Three phase KW = Vp x A x pf x rt3 / 1000

KVA - Apparent Power

The apparant power in the load.
Single phase KVA = Vrms x Arms
Three Phase KVA = Vrms x Arms x rt3

KVAR - Reactive Power - KVA Reactive

The reactive power is the apparent power in the reactive current.
This is essentially the KVA with the reactive current only considered.
The reactive power does not include any KW component.
Displacement correction is usually rated in KVAR.