A grounding switch combined with a lightning protection device and its method

Abstract

The invention belongs to the switch technical field and discloses a lightning arrester-combined grounding switch and a method thereof. The lightning arrester-combined grounding switch includes a grounding switch main body, a zinc oxide lightning arrester, an electric operation mechanism and a motor shut-down control mechanism, wherein the electric operation mechanism includes a motor and a bevel gear drive mechanism. The lightning arrester-combined grounding switch of the invention has the advantages of simple, compact and reasonable structure, simple use method, suitability for being used under high current intensity, and excellent overall operating performance. The grounding switch is combined with the lightning arrester, so that the grounding switch can have the functions of the lightning arrester; when working under working voltage, the grounding switch is required to bear additional constant lightning impulse voltage, and the grounding switch main body cannot perform discharge or be grounded under the impact of the additional constant voltage, while, the lightning arrester will be converted into a conductive state from an insulated state, and performs disruptive discharge when additional lightning intrudes the switch or voltage is increased, and therefore, a certain lightning current or overvoltage can be led into the ground, and the grounding switch will not be impacted by the additional constant voltage, and the safety of related equipment can be well protected.

Description

technical field [0001] The invention belongs to the technical field of switches, in particular to electrical switch technology, in particular to a grounding switch for electrical switch equipment and a method thereof. Background technique [0002] The grounding switch is a mechanical device used to ground equipment or lines. It is used to carry a specified abnormal current within a specified time under abnormal conditions, such as short circuit, so as to ensure maintenance during equipment or line maintenance. personnel safety. Grounding switches are mostly found in power distribution equipment such as high and low voltage switchgear, mainly including static contacts and moving contact blades, one of which is connected to the equipment and the other is grounded. For common switch cabinets, there are three static and dynamic contacts of the grounding switch, and the three static contacts are respectively connected to the busbar at the incoming line end of the switch cabinet,...

AI Technical Summary

Problems solved by technology

[0007] At present, the existing technology has disclosed a variety of grounding switches, but these grounding switches only play their role as a grounding switch. Lightning is a sound, light, and electrical physical phenomenon that occurs in the atmosphere, and it is the most spectacular and important atmospheric phenomenon in nature. One of the phenomena, so the current grounding switch only plays its own role is far from enough, there are its shortcomings

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