Power Factor is the ratio of the actual power of the alternating current as measured by a wattmeter to the apparent power as indicated by an ammeter and voltmeter. It can also be defined as the cosine of the phase angle between the voltage applied to the load and the current passing through it. Inductive and Capacitive loads will cause a phase shift in the current. A perfect power factor is 1:1.
订阅华仪电子报
