Electric power has two components:
Active power, which produces work.
Reactive power, which is needed to generate magnetic fields required for operation of inductive electrical equipment, but performs no useful work.
Active power is measured in KW (1000 Watts)
Reactive power is measured in KVAR (1000 Volt-Amperes Reactive)
Total power is measured in KVA (1000 Volts-Amperes)
The ratio of working power to total power is called Power Factor.
The function of Power Factor Correction Capacitors is to increase the power factor by supplying the reactive power when installed at or near inductive electrical equipment.
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