What is power factor?

Power factor refers to the ratio of active power to apparent power of an AC circuit. Under a certain voltage and power of the user’s electrical equipment, the higher the value, the better the efficiency, and the more the generating equipment can be fully utilised. It is often expressed as cosΦ.

Power factor (Power Factor) of the size of the circuit with the nature of the load, such as incandescent light bulbs, resistance furnace and other resistive loads of the power factor of 1, generally with inductive loads of the circuit power factor is less than 1. Power factor is an important technical data of the power system. Power factor is a coefficient that measures the efficiency of electrical equipment. A low power factor indicates that the circuit is used for alternating magnetic field conversion of reactive power is large, thus reducing the equipment utilisation and increasing the line power supply losses. In an AC circuit, the cosine of the phase difference (Φ) between the voltage and the current is called the power factor, which is represented by the symbol cosΦ. Numerically, the power factor is the ratio of the active power to the apparent power, i.e., cosΦ = P/S.

The power metering modules developed and produced by JSY Technology can accurately measure the power factor, such as the three-phase embedded power metering module JSY-MK-333 and the single-phase power metering module JSY1003.


Post time: Jan-24-2024