Power Factor is the ratio of real power (kW) to apparent power (kVA).Resistive loads (lighting, heating): PF ≈ 1.0 Motor loads: PF ≈ 0.8 Mixed loads: PF ≈ 0.8 Increased cable current and heat Reduced useful generator capacity Increased fuel consumption Reduced generator lifespan Use power factor correction capacitors Proper motor loading Prevent motors from running unloaded
Formula:
Power Factor = kW ÷ kVA
Common Values:
Impact on Generator Capacity:
Generators are typically rated at 0.8 power factor. A 1000 kVA generator can provide 800 kW.
Problems of Low Power Factor:
Improving Power Factor: