Gas switch

Abstract

The invention aims to provide a gas switch, wherein, artificial confirmation and judgment mingled before operation of various operating handles are removed through mechanical control of the action of a master operating handle and an earthing operating handle, thereby misoperation prevention of various operating handles is realized and the reliability of functions is improved. The invention comprises the master operating handle, an earthing operating handle base part, the earthing operating handle, a handle assembly stop mechanism and a handle closing operation stop mechanism, wherein, the earthing operating handle can be detached relative to the earthing operating handle base part when the master operating handle is positioned on a switch off position; the earthing operating handle can be detached relative to the earthing operating handle base part; the handle assembly stop mechanism leads to incapability of the earthing operating handle being arranged on the earthing operating handle base part which is positioned on a switch off position when the master operating handle is positioned on a switch on position; the handle closing operation stop mechanism leads to incapability of the closing operation of the master operating handle being performed when the master handling is positioned on a switch off position and the earthing operating handle base part is positioned on a switch on position.

Description

technical field [0001] The present invention relates to gas switches. More specifically, it relates to a technique capable of preventing erroneous operations of a main operating handle and an operating handle for grounding, which are the cause of electrical accidents, in a gas switch. Background technique [0002] In a gas switch with a grounding contact, in order to avoid electrical accidents caused by the main contact and the grounding contact being closed at the same time, it is necessary to avoid misoperation of the main operating handle and the grounding operating handle of the gas switch. [0003] In a gas switch, as such a mechanism is provided, there is, for example, "a device for preventing false closing of an earthing switch for operation of a gas insulated switchgear" described in Patent Document 1. [0004] The device described in Patent Document 1 is equipped with: a locking device that prevents the rotation of the opening and closing drive shaft by being fixed...

AI Technical Summary

Problems solved by technology

[0008] That is, in the above-mentioned device, prior to the operation of each operating part related to the closing of the circuit breaker, etc., human confirmation and judgment that cannot be said to be absolute are mixed, and it cannot be excluded from this human confirmation and judgment. Possibility of errors causing electrical accidents even involving human life

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