Circuit breaker and three-position switch interlocking device and circuit breaker-three-position switch device

Abstract

The invention relates to the field of a high-voltage electrical apparatus, and especially relates to a circuit breaker and three-position switch interlocking device and a circuit breaker-three-position switch device. The circuit breaker and three-position switch interlocking device comprises a side plate, a tripping assembly, a circuit breaker reclosing self-locking assembly and a three-position switch interlocking assembly, wherein the tripping assembly, the circuit breaker reclosing self-locking assembly and the three-position switch interlocking assembly are arranged on the side plate. The tripping assembly comprises a closing trigger crank arm; the circuit breaker reclosing self-locking assembly comprises a reclosing locking trigger crank arm; the three-position switch interlocking assembly comprises a locking three-position trigger crank arm; the closing trigger crank arm, the reclosing locking trigger crank arm and the locking three-position trigger crank arm are coaxial, synchronous and rotary crank arms; the closing trigger crank arm is provided with a just closing position and a closing position in sequence along the closing operation action direction; and triggering time of the reclosing locking trigger crank arm and triggering time of the locking three-position trigger crank arm are before the closing trigger crank arm arrives at the just closing position. The problem that a circuit breaker and a three-position switch cannot be interlocked midway in the operation process is solved.

Description

technical field [0001] The invention relates to the field of high-voltage electrical appliances, in particular to a circuit breaker-three-position switch interlocking device and a circuit breaker-three-position switch device. Background technique [0002] Circuit breakers and three-position switches are two types of switching devices used in power transmission circuits. Due to the differences in their respective characteristics and functions, in practical applications, it is required to have a certain relative opening and closing relationship between the circuit breaker and the three-position switch, otherwise it will cause failure and bring great losses. [0003] The specific relative opening and closing relationship between the circuit breaker and the three-position switch is realized through the interlocking device between the circuit breaker and the three-position switch, which interlocks the operation between the circuit breaker and the three-position switch to ensure ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a circuit breaker and three-position switch interlocking device to solve the problem that the circuit breaker and three-position switch cannot be interlocked midway during operation

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