Grounding switch

Abstract

A grounding switch includes a contact terminal assembly, a square rotating shaft, a mounting and fixing assembly, and a driving assembly. The contact terminal assembly is connected with a moving contact terminal of the grounding switch to control the grounding switch to be switched on or grounded. The contact terminal assembly is connected to the square rotating shaft; the square rotating shaft isused to control the rotation of the contact terminal assembly; the mounting and fixing assembly is used to fix the driving assembly and the square rotating shaft, the mounting and fixing assembly isdivided into two parts, one of the two parts is used to fix the driving assembly while the other part is connected with the rotatable square rotating shaft in a sleeving manner, the driving assembly is used to drive the square rotating shaft to rotate, the square rotating shaft is provided with power to rotate by the driving assembly through a connecting rod driving mode, the driving assembly is fixed on the mounting and fixing assembly, and the driving assembly is connected with the rotatable square rotating shaft is a sleeving manner. The grounding switch disclosed in the invention can be free of limitation by the driving assembly during usage and is advantageous in that jamming cannot be caused.

Description

technical field [0001] The invention relates to the field of high-voltage switches, in particular to a grounding switch for power distribution switchgear. Background technique [0002] High-voltage isolation / grounding switches are commonly used electrical components in high-voltage power transmission and distribution systems. The high-voltage isolating switch is mainly used to disconnect the circuit with no load current when it is opened, and to pass the current reliably when it is closed. The high-voltage grounding switch is used to ground the circuit to ensure safety during maintenance. The switch can realize the closing of the isolating switch and the closing of the grounding switch by driving and rotating the operating main shaft. [0003] The existing grounding switch has the situation that the closing or opening is not in place; and the speed of closing and the generated torque are limited by the operating mechanism; the grounding switch is easily affected by the sur...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the closing or opening of the grounding switch is not in place, the speed of closing and the generated torque are limited by the driving mechanism, and it is easy to be affected by the surrounding environment and cause jamming. The purpose of the present invention is to provide a grounding switch , using the principle of spring over-dead point to ensure that the grounding switch is in place when closing and opening; the driving mechanism for fast closing has nothing to do with the rotation of the rotating shaft, and the closing speed and torque generated by the switch are not affected by the operating mechanism. The limitation of the insulation part and the metal part avoids the jamming phenomenon, so that the grounding switch can rotate flexibly and is not affected by the external environment

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