Active Output Type Residual Current Relay and Power Saving Effect of Its Protection Device
Introduction was made to the cause of generation of AC contactor electromagnetic system in power consumption.This paper described power saving characteristics of active output type residual current relay and AC contactor in combination application to carry out comparison and analysis for a practical circuit.The result shows that the DC remaining operation method,with AC contactor suction coils added in active output type residual current action relay,can effectively solve problems of point and noise in stable operation,saving a lot of electric energy.