Number: 48420/(100125 2+48420 2) 0.5 = 0.43536.
The power factor is related to the load nature of the circuit. For example, the power factor of resistive loads such as incandescent bulbs and resistance furnaces is 1, and the power factor of general circuits with inductive loads is less than 1.
Power factor is an important technical data of power system. Power factor is a coefficient to measure the efficiency of electrical equipment. The low power factor shows that the reactive power of the circuit used for alternating magnetic field conversion is large, which reduces the utilization rate of equipment and increases the power supply loss of the line.
In AC circuits, the cosine of the phase difference (φ) between voltage and current is called power factor, which is represented by the symbol COS φ. Numerically, the power factor is the ratio of active power to apparent power, that is, cos φ = p/s.
Extended data:
How to improve the power factor;
(1) Improve the natural power factor.
Natural power factor is the power factor of electrical equipment without any compensation. Methods to improve natural power factor: Reasonable selection of asynchronous motor; Avoid transformer no-load operation; Reasonably arrange and adjust the process flow to improve the operation status of mechanical and electrical equipment; If the production process allows, the asynchronous motor is replaced by synchronous motor.
(2) Using artificial compensation for reactive power.
Install reactive power compensation equipment for manual compensation. The reactive power compensation equipment commonly used by power users is power capacitor.
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