pf – Project Haystack

def

pf

Electric power factor; which is the ratio of active power to apparent power in an AC electric power system. Measured with values in the range of -1.0 to 1.0 or 0.0 to 1.0 without a unit. When the range of -1.0 to 1.0 is applied, a negative value for power factor indicates the electrical current leads the electrical voltage and a positive value indicates the electrical current lags the electrical voltage.

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Measurable property of a substance or phenomenon