Multi-point safety grounding device for general high-voltage switch equipment

Abstract

The invention discloses a multi-point safety grounding device for general high-voltage switch equipment. The multi-point safety grounding device comprises a grounding guide rod, a guide rod, a rack and a mounting plate, wherein the grounding guide rod, the guide rod and the rack are welded to form a movable support, an insulating base and a positioning pin are fixed to the mounting plate, the guide rod is inserted into a guide hole of the insulating base, the positioning pin is inserted into a long hole of the rack, and the rack is meshed with a meshing gear; and a multi-point grounding electrode is fixed on the movable support, and a multi-point grounding terminal corresponding to the position of the multi-point grounding electrode is fixed on the insulating base. When a high-voltage circuit breaker is in an opening position, the multi-point grounding electrode is completely contacted with the multi-point grounding terminal, and a fixing bolt is screwed into the grounding guide rod tofix the movable support, thereby realizing safe grounding. The structure is small, the installation is convenient, and the space in equipment can be greatly saved; multi-point grounding enables grounding to be more sufficient; the bolt is used for fixing after grounding, so that the grounding is safer and more reliable; and the mechanical structure is simple in design, the number of parts is small, the back-and-forth movement is accurate, and the failure rate is low.

Description

technical field [0001] The invention relates to an accessory of a high-voltage switchgear, in particular to a multi-point safety grounding device for a general high-voltage switchgear. Background technique [0002] In the high-voltage power supply system, no matter whether it is personal safety or the safety of the equipment itself, there is no room for any negligence. Especially in the process of equipment overhaul, maintenance and maintenance, not only must there be strict operating procedures, but also an absolutely safe grounding device. In the high-voltage and high-current electromagnetic environment, when the high-voltage circuit breaker rotates from the "closed" position to the "opened" position, due to the capacitive reactance effect in the circuit, the high voltage change rate and current change rate will produce very large induced electromotive force. In particular, there will be a large amount of high-voltage static electricity attached to the surface of the ter...

AI Technical Summary

Problems solved by technology

[0003] However, in the actual working process, many high-voltage switches are usually grounded in a single-point manner, which has poor reliability; especially in hot flash environments, the elimination effect of high-voltage static electricity is even worse

If the grounding of the high-voltage switchgear is insufficient and the discharge of high-voltage static electricity is not complete, when the operator performs repairs and maintenance of the high-voltage circuit breaker, it is very easy to cause electric shock accidents

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