Earth switch interlocking mechanism and switch cabinet

Abstract

The invention relates to an earth switch interlocking mechanism and a switch cabinet. The earth switch interlocking mechanism comprises a first crank arm connected with an isolation switch operation shaft, and a second crank arm connected with an earth switch operation shaft. The first crank arm and the second crank arm are movably connected through a connecting element. A first connecting part connected with the first crank arm and a second connecting part connected with the second crank arm are set on the connecting element. At least one of the first connecting part and the second connectingpart is equipped with a connecting long waist hole which is movably connected with the corresponding crank arm, thereby enabling the connecting element to adapt to actions of the first crank arm andthe second crank arm. The connecting long waist hole is equipped with a limiting wall which is in stop matching with the corresponding crank arm, thereby limiting the action of the second crank arm when an isolation switch is located at a switch-on position. The problem that in the prior art, an earth switch falls off due to damage of an earth crank arm or a pull rod is solved.

Description

technical field [0001] The invention relates to an interlocking mechanism of a grounding switch and a switch cabinet. Background technique [0002] In medium and low voltage power transmission and transformation systems, XGN2 fixed switchgear is widely used. The remarkable feature of this switchgear is the use of fixed circuit breakers and GN series isolating switches. Can form a clear fracture, high safety performance. The grounding switch is usually integrated with the isolating switch, which is more convenient to operate. [0003] The currently used isolating switch and grounding switch are usually interlocked by mechanical locking JSXGN-12 or manual operating mechanism CS6, which has high safety. However, when the equipment is aging or human misoperation may cause damage to the operating mechanism such as the grounding arm or the operating lever, the grounding switch may automatically fall due to its own gravity, resulting in a faulty grounding accident. Contents of ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a grounding switch interlocking mechanism to solve the problem in the prior art that the grounding switch is dropped due to damage to the grounding arm or pull rod; Mechanism switchgear

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