Power Factor is a measure of electrical efficiency.
The total electrical power (Kilo Volt Amperes or kVA) used in an electrical system by industry or a commercial facility has two components:
*Productive Power (Kilowatts or kW) which produces work
*Reactive Power (Kilo Volt Amperes Reactive or kVAR)
which generates the magnetic fields required in inductive electrical equipment (AC motors, transformers, elevator motors, pool pump motors, compressor motors, conveyors, blenders, mixing pumps, VFD motors, blower motors, equalization tank mixers, sludge processing motors, primary and secondary clarification pumps, etc.)
Inductive electrical equipment employing magnetic fields requires this Reactive Power (kVAR) which produces no productive work.
The Total Power (kVA) provided by the generating source must be greater than the Productive Power.
The ratio of Productive Power (kW) to Total Power (kVA) is Power Factor. It is a measure of system electrical efficiency in an alternating current circuit, and is represented as a % or decimal.