Large-scale device circuit breaker suitable for high-temperature working environment of factory

Abstract

The invention discloses a large-scale device circuit breaker suitable for a high-temperature working environment of a factory. The large-scale device circuit breaker comprises a circuit breaker shell, a circuit communication mechanism, an external connection mechanism, an overload protection mechanism and a short circuit protection mechanism are arranged in the circuit breaker shell, the external connection mechanism is connected with an external wire, and the circuit communication mechanism connects and disconnects an internal circuit to cooperate with the external connection mechanism, so that the circuit forms a loop. The overload protection mechanism controls the circuit connection mechanism to be disconnected when the circuit is overloaded, so that the circuit is disconnected, and the short circuit protection mechanism controls the circuit connection mechanism to be disconnected when the circuit is short-circuited, so that the circuit is disconnected. According to the large-scale device circuit breaker suitable for the high-temperature working environment of the factory in the technical scheme, the starting condition in the short-circuit protection mechanism is adjusted by sensing the change of the external temperature, and the overload protection mechanism is started by comparing the sensing temperature difference, so that the operation safety of the special devices is effectively guaranteed, and meanwhile, the production cost is saved.

Description

technical field [0001] The invention relates to the related field of circuit breakers, in particular to a large-scale equipment circuit breaker suitable for high-temperature working environments in factories. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break the current under normal circuit conditions and can close, carry and break the current under abnormal circuit conditions within a specified time. Some special equipment in the factory, such as metallurgical Equipment, etc. need to work in an ultra-high temperature working environment, which will cause the traditional circuit breaker to bend directly in the high temperature working environment through the bimetallic strip, and at the same time affect the magnetic force of the short circuit coil in the traditional circuit breaker, resulting in the traditional circuit breaker being unable to operate in a high temperature environment. Normal operation, if using a the...

AI Technical Summary

Problems solved by technology

[0002] A circuit breaker refers to a switching device that can close, carry and break the current under normal circuit conditions and can close, carry and break the current under abnormal circuit conditions within a specified time. Some special equipment in the factory, such as metallurgical Equipment, etc. need to work in an ultra-high-temperature working environment, which will cause the traditional circuit breaker to bend directly in the high-temperature working environment through the bimetallic sheet, and at the same time affect the magnetic force of the short-circuit coil in the traditional circuit breaker, resulting in the failure of the traditional circuit breaker in the high-temperature environment. Normal work, if you use a heat-insulated fuse, it will make it necessary to replace the fuse when there is a circuit failure, which increases the production cost

Images