An isolating circuit breaker operating system

Abstract

The invention relates to a circuit breaker isolation operating system. The circuit breaker isolation operating system is arranged in a control box and is characterized by comprising an interlocking operating device, a locking device and a transmission mechanism, wherein the interlocking operating device and the locking device are connected by the transmission mechanism. The working condition that a circuit breaker and a ground switch cannot be simultaneously switched on is achieved by the interlocking operating device, the situation that the circuit breaker is switched on when the ground switch is switched on is prevented by the locking device, and the safety of a circuit is protected.

Description

technical field [0001] The invention relates to the field of circuit engineering, in particular to an isolation circuit breaker operating system. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. [0003] Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equivalent to a fuse-type switch. Combination with overheating and underheating relays, etc. Moreover, there is generally no need to change parts after breaking the fault current. At present, it has been widely used. [0004] As shown in Chinese patent 201110296602.2, a circuit breaker operating device includes front and rear ...

AI Technical Summary

Problems solved by technology

[0005] When the general isolation circuit breaker is working, the circuit breaker cannot be closed when the ground knife is closed; on the contrary, when the circuit breaker is closed, the ground knife cannot be closed. In the case of misoperation or automatic closing, it is necessary to make the circuit breaker pass the tight lock control or adopt the form of interlock when the ground knife is closed, so that the circuit breaker cannot be closed

The above-mentioned patent adopts the form of matching the ground knife and the circuit breaker to prevent the simultaneous closing of the ground knife and the circuit breaker through the pin shaft and the driving block. Although this problem has been solved to a certain extent, the The structure is complicated, and it is inconvenient to process and install

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