Breaker provided with arc extinguishing mechanism with magnetic blowing and air-blowing functions

Abstract

The invention provides a breaker provided with an arc extinguishing mechanism with magnetic blowing and air-blowing functions, and mainly aims at solving the problems of poor breaking capacity and poor arc extinguishing effect due to the fact that the arc extinguishing mechanism of the breaker only has the magnetic blowing function or the air-blowing function. The breaker is characterized by also comprising a magnetic blowing device (4) and a gas production plate (5), wherein the magnetic blowing device (4) and the gas production plate (5) are correspondingly arranged between a static contact (22) and an arc extinguish chamber (3) and are used for guiding an electric arc generated when a moving contact (21) is separated from the static contact (22) to the arc extinguish chamber (3). According to the breaker provided with the arc extinguishing mechanism with the magnetic blowing and air-blowing functions provided by the invention, a magnetic blowing mechanism and the gas production plate are also arranged between the static contact and the arc extinguish chamber; and the electric arc generated when the moving contact is separated from the static contact is guided to the arc extinguish chamber, so that the arc extinguishing efficiency is improved; and the breaking capacity is relatively high.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, and relates to a circuit breaker provided with an arc extinguishing mechanism with the functions of magnetic blowing and air blowing. Background technique [0002] With the continuous growth of power demand, my country is vigorously carrying out the construction of power infrastructure, and the relationship between DC power supply and distribution system and people's daily life is getting closer and closer. Compared with the AC power supply and distribution system, the DC power supply and distribution system has the advantages of low line cost, large capacity, rapid adjustment, and reliable operation. DC power supply and distribution system. The DC circuit breaker is the key equipment for the safe operation of the DC system. It must be able to reliably connect, break and carry the current under normal operating conditions, and it must be able to connect, carry for a certain perio...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of the background technology, the present invention provides a circuit breaker equipped with an arc extinguishing mechanism with both magnetic blowing and air blowing functions. Good, but the arc extinguishing effect is not good

Images