Arc-striking-and-extinguishing system of electric switch

Abstract

The invention relates to an electric switch, namely, a breaker, in particular to an arc-striking-and-extinguishing system of an electric switch. According to the arc-striking-and-extinguishing system of the electric switch in the technical scheme, the arc-striking-and-extinguishing system of the electric switch comprises an arc extinguishing chamber, an upper arc striking plate, a lower arc striking plate, a left arc insulating plate and a right arc insulating plate, and is characterized in that an arc feeding opening in the front end of an arc extinguishing plate of the arc extinguishing chamber is formed in the middle of the end face, the parts, located on the two sides of the arc feeding opening, at the front end of the arc extinguishing plate are symmetrically arranged, the left arc insulating plate and the right arc insulating plate are located on the left side and the right side of the arc feeding opening, and a left arc insulating face and a right arc insulating face are arranged at the portions, close to the arc feeding opening, on the left arc insulating plate and the right arc insulating plate, and are close to be parallel or parallelly arranged. According to the quite-good novel arc-striking-and-extinguishing system of the electric switch in the technical scheme, an electric arc can be introduced into the arc extinguishing chamber, the volume of the arc extinguishing chamber is large, the arc extinguishing capacity is high, and the arc extinguishing chamber is not prone to local explosion.

Description

technical field [0001] The invention relates to an electric switch, that is, a circuit breaker, in particular to an arc striking and extinguishing system in the electric switch. Background technique [0002] In existing electrical switch products, the L pole generally adopts a smaller arc extinguishing chamber, or adopts an arc extinguishing chamber that is asymmetrical up and down. Part of the arc cannot be introduced into the arc extinguishing chamber due to the small arcing channel, resulting in low breaking capacity or bursting of the switch product. , can not meet the increasingly higher requirements of line breaking capacity. Contents of the invention [0003] The present invention overcomes the problems existing in the prior art, and provides a new type of ignition switch for electric arcs that can lead the arc into the arc extinguishing chamber, and the arc extinguishing chamber has a large volume, strong arc extinguishing ability, and the arc extinguishing chamber...

AI Technical Summary

Problems solved by technology

[0002] In existing electrical switch products, the L pole generally adopts a smaller arc extinguishing chamber, or adopts an arc extinguishing chamber that is asymmetrical up and down. Part of the arc cannot be introduced into the arc extinguishing chamber due to the small arcing channel, resulting in low breaking capacity or bursting of the switch product. , cannot meet the increasingly higher requirements of line breaking capacity

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