Permanent magnet-assisted starting leakage protector

Abstract

The invention discloses a permanent magnet-assisted starting leakage protector, and belongs to the field of leakage protectors. The permanent magnet-assisted starting leakage protector comprises a support, an electromagnet, a permanent magnet, a swing plate, a return component, a stationary contact component, a moving contact component, and a leakage detection circuit which controls the switch-on and switch-off of the electromagnet, wherein the electromagnet and the support are arranged together; the moving contact component and one end of the swing plate are arranged together; the other end of the swing plate and the return component are arranged together; the return component and the support are arranged together; the permanent magnet, and the leakage detection circuit which controls the switch-on and switch-off of the electromagnet are arranged in the support respectively; the electromagnet comprises a plunger, a fixed iron core, a coil frame and a coil assembly; the coil assembly and the coil frame are arranged together; the plunger and the fixed iron core are arranged together with the coil frame respectively; the permanent magnet is in contact with the outer end of the plunger; and the return component comprises a return spring. The permanent magnet-assisted starting leakage protector can protect an electric appliance from being burnt out and protect a user from getting an electric shock.

Description

technical field [0001] The invention relates to the field of leakage protectors, in particular to a permanent magnet assisted starting leakage protector. Background technique [0002] For electrical safety reasons, leakage protectors are often used to connect between electrical appliances and the mains. In a typical configuration, a residual current protector controls at least one pair or more contacts located between the load and the power supply, and includes at least one moving contact mechanical structure joined to a fixed contact on the other side. The function of the electromagnet is to engage one or more contacts and conduct the circuit. [0003] Typical electromagnets generally provide relatively weak magnetic force in applications with long strokes. Usually, the general design is to overload the electromagnet in a short period of time to increase the magnetic force. However, the overload operation time cannot be maintained for too long, otherwise the electromagnet...

AI Technical Summary

Problems solved by technology

Therefore, the electromagnet used in this type of leakage protector must be able to operate continuously for a long time

Images