Generator - P vs Q Loading

Generator active/reactive power split - maintains PF ≥ 0.8 lagging for export; voltage regulation adjusts Q.

GeneratorP QPower factor

Apparent powerkVAPower factor

Active power P: 2,550kW

Reactive power Q: 1,580kvar

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

P = S \cos\varphi, \quad Q = S \sin\varphi

Symbol	Meaning	Unit
$S$	Apparent power	kVA
$PF$	cos φ

Source: IEEE 45 / IEC 60092

In short

Generator active/reactive power split - maintains PF \u2265 0.

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