A device for eliminating dissociation of a molded case circuit breaker and its installation method

Abstract

The invention discloses an ionization eliminating device of a moulded case circuit breaker and a mounting method thereof in the low-voltage electric field. A rectangular through groove is formed in aninsulating cover top plate on the top surface of an insulating cover of each electrode compartment, the front side wall of each rectangular through groove horizontally extends backwards to form an elastic clamping foot, and a narrow slot inclining from the rear upper part to the front lower part is formed between the rear side wall of each elastic clamping foot and the rear side wall of each rectangular through groove; the left end and the right end of front and rear side walls of each rectangular through groove extend downwards to form bosses, upper sections of front and rear side walls of the bosses define an upper U-shaped groove, lower sections of front and rear side walls and the bottom wall define a lower U-shaped groove communicating with the upper U-shaped groove, and the groove width of the upper U-shaped groove in the front-rear direction is larger than that of the lower U-shaped groove; the left-right length of the upper part of each metal ionization eliminating plate is larger than that of the lower part, and flanges are formed in the transition positions of the upper and lower parts; and through structure improvement of the insulating cover of a circuit breaker, the metal ionization eliminating plates can be fixed on the insulating cover and can be mounted very conveniently.

Description

technical field [0001] The invention belongs to the field of low-voltage electric technology and relates to the structure of a molded case circuit breaker, in particular to an ionization elimination device installed inside the molded case circuit breaker to block free gas and achieve the effect of ionization elimination. Background technique [0002] During the breaking process of the molded case circuit breaker, an arc will be generated between the moving and static contacts, and the electric field of the arc will ionize the gas inside the circuit breaker and generate a large number of metal free particles. If these metal particles fly out of the circuit breaker, it will cause the surrounding The circuit is short-circuited or burned, causing an accident. In order to prevent this phenomenon, an anti-separation device is usually installed in the insulating cover of the circuit breaker. Most of the anti-separation devices are composed of sheet metal wire braids or sheet metal ...

AI Technical Summary

Problems solved by technology

However, the problem of this kind of deionization device is that the plastic part of the circuit breaker insulation cover has complicated features, and additional parts are needed to fix the metal mesh plate. In a cavity with limited space, it is difficult to fix and install, and the circuit breaker has a large number of parts. ,complex structure

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