Driving module of residual-current circuit breaker

Abstract

The invention provides a driving module of a residual-current circuit breaker. The driving module comprises a tension spring, a magnetic yoke and a moving iron core; one end of the tension spring is fixedly connected onto an inner wall of the magnetic yoke, and the other end of the tension spring is connected onto the moving iron core; a separation plate and a magnet are successively arranged between the moving iron core and an inner wall of the magnetic yoke which oppositely contacts with the moving iron core; and a coil is parallelly arranged along the axial position of the tension spring. According to the driving module of the residual-current circuit breaker provided by the invention, the coil can switch on low-voltage direct current under the pulse control of a 16-bit microprocessor, and therefore, even if the circuit breaker refuses to perform tripping, the coil will not emit heat, be burned out or short circuited, and therefore, the circuit breaker and a power grid system can be safer; a current leakage controller in the driving module of the invention is realized through adopting the 16-bit microprocessor, and therefore, a user can customize functions according to their own needs, and thus, a current leakage control and protection function can be more flexible and convenient.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a driving module of an earth leakage circuit breaker. Background technique [0002] The current leakage controller in the current leakage molded case circuit breaker at home and abroad usually adopts a dedicated integrated circuit for leakage collection (such as M54133FP), and the action mechanism for driving the push rod of the circuit breaker adopts the mode of self-priming coil, and its working principle is generally as follows: The leakage acquisition circuit collects the leakage fault signal and sends out a constant level to drive the single-phase thyristor. After the single-phase thyristor is turned on, the self-priming coil can be energized (the power is taken as an alternating voltage between phases), and the self-priming After the coil is energized, a magnetic field is generated, and the moving iron core in the action mechanism is attracted by the magnetic field...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a driving module of a leakage circuit breaker, which is used to solve the problem that the driving module of a leakage circuit breaker in the prior art is likely to cause a short circuit of the circuit breaker and cause the circuit breaker to burn out

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