Do you know the meaning of power factor?

Power factor is an important technical data of power system. Power factor is a factor that measures the efficiency of electrical equipment. The low power factor indicates that the reactive power of the circuit used for alternating magnetic field conversion is large, which increases the power supply loss of the line. Therefore, the power supply department has certain standard requirements on the power factor of the power unit. In ac circuits, the phase difference between voltage and current (Φ) cosine is called power factor, with symbol cos Φ said on numerical, power factor (pf) is the ratio of power and real power, namely the cosine Φ = P/S