Oct 28, 2020
How does the soft starter achieve light load and energy saving
A cage asynchronous motor is an inductive load. During operation, the current in the stator coil winding lags behind the voltage. If the working voltage of the motor is unchanged, the power factor is low when it is under light load, and it is high when it is under heavy load. The soft starter can achieve the purpose of light-load energy saving by reducing the motor terminal voltage and improving the power factor, reducing the motor's copper and iron consumption when the load is light; when the load is heavy, increasing the motor terminal voltage to ensure the normal operation of the motor .