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Power Factor Calculator

Find power factor and power triangle values.

CALCULATE

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Formulas

PF = P / S = cos(φ)

P = real power (W), S = apparent power (VA), Q = reactive power (VAR). S² = P² + Q².

Power Factor

PF = 1.0: purely resistive (ideal). PF = 0: purely reactive (no useful work). Motors typically 0.7-0.9. Power companies charge penalties for PF below 0.9. Correct with capacitors.

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