Switch cabinet and three-phase grounding switch thereof

Abstract

The invention provides a switch cabinet and a three-phase grounding switch thereof, and relates to the technical field of high-voltage electrical equipment. The switch cabinet comprises a cabinet body, wherein the three-phase grounding switch and a three-phase fixed contact are installed inside the cabinet body; the three-phase grounding switch comprises a substrate fixedly installed with the cabinet body; a transmission main shaft is rotatably assembled on the substrate; the transmission main shaft is vertically connected with a connecting arm; an integral movable contact is installed at theouter end of the connecting rod, and the length of the integral movable contact extends along the axis of the transmission main shaft; and the movable contact is separated from and in contact with thethree-phase fixed static simultaneously when being driven by the transmission main shaft to rotate so as to realize opening and closing. When the switch cabinet is used, an operating mechanism drivesthe transmission main shaft to rotate, the transmission main shaft drives the movable contact to perform closing and opening actions, due to the fact that the movable contact is of an integral structure, the movable contact and the three-phase fixed contact are of high synchronism in separated and contact states, opening and closing of each phase of contact are guaranteed simultaneously, the reliability of grounding connection is improved, and the electric shock hidden danger of operators is completely eliminated.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrical equipment, in particular to a switch cabinet and a three-phase grounding switch. Background technique [0002] In the high-voltage circuit, the switch cabinet is an important control and shunt part of the whole circuit. During normal operation, the power distribution cabinet is a live device. When the switch cabinet needs to be repaired, it needs to be grounded to avoid the risk of electric shock for maintenance personnel. The component that controls whether the switch cabinet is grounded is the grounding switch. The function of the grounding switch is: 1. It is installed on the power supply side or the output load side of the switch cabinet to prevent sudden calls during the maintenance process. The grounding switch can lead the output load into the ground to protect the maintenance personnel. Charge build-up creates a discharge hazard. [0003] The existing technology of the gr...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a three-phase grounding switch to solve the problems of poor synchronization of the movement of the moving contact piece, unreliable grounding, and the inability to completely eliminate the hidden danger of electric shock for operators

The purpose of the present invention is to provide a switchgear to solve the problems of poor movement synchronization of moving contacts, unreliable grounding, and inability to completely eliminate the hidden danger of electric shock for operators

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