Interlocking isolation switch of circuit breaker

Abstract

The invention discloses an interlocking isolation switch of a circuit breaker. The switch comprises a front mounting plate; a rear mounting plate is arranged on the inner side of the front mounting plate in a relatively parallel manner; an output shaft is arranged between the front mounting plate and the rear mounting plate; a closing shaft is arranged on the right side of the output shaft; the output shaft penetrates through the front mounting plate and the rear mounting plate; the front end of the output shaft is provided with an opening and closing indicating plate; the back end of the output shaft is provided with a first connection block; a second connection block is arranged on the inner side of the first connection block; the switch is small in occupied space, high in reliability, convenient to install, free of deviation and high in safety, and the interlocking function of an isolation switch and a circuit breaker can be achieved under the condition that no electric interlockingprotection exists.

Description

Technical field: [0001] The invention relates to the field of high-voltage switchgear, in particular to a circuit breaker interlocking isolating switch. Background technique: [0002] The switchgear gathers medium-voltage components such as busbars, circuit breakers, and isolating switches in the box, and is widely used because of its good safety, high reliability, and strong adaptability. As the core components of the switchgear, the isolating switch and circuit breaker play an important role in the control, protection, isolation and grounding functions of the switchgear. A complete interlocking device must be equipped between the isolating switch and the circuit breaker to ensure the reliability of electrical equipment. In operation, the switchgear with interlock mechanism can only operate the isolating switch when the circuit breaker is open, and cannot operate the isolating switch when the circuit breaker is closed. [0003] The interlocking device between the isolating...

AI Technical Summary

Problems solved by technology

As the core components of the switchgear, the isolating switch and circuit breaker play an important role in the control, protection, isolation and grounding functions of the switchgear. A complete interlocking device must be equipped between the isolating switch and the circuit breaker to ensure the reliability of electrical equipment. operation, the switchgear with interlock mechanism can only operate the isolating switch when the circuit breaker is open, and cannot operate the isolating switch when the circuit breaker is closed

[0003] The interlocking device between the isolating switch and the circuit breaker of the existing switch cabinet is not perfect, and lacks a mechanical interlocking device. In the absence of electrical interlocking protection, it will cause misoperation and safety accidents due to the lack of mechanical interlocking

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