Switch cabinet and three-phase grounding switch thereof

A three-phase grounding and switchgear technology, which is applied in the direction of switchgear, air switch parts, switchgear, etc., can solve the problem of unreliable grounding, the inability to completely eliminate the hidden danger of electric shock for operators, and poor synchronization of moving contact pieces. problem, achieve the effect of improving reliability and eliminating hidden dangers of electric shock

Pending Publication Date: 2018-11-13
HENAN HUASHENGLONGYUAN ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Switch cabinet and three-phase grounding switch thereof
  • Switch cabinet and three-phase grounding switch thereof
  • Switch cabinet and three-phase grounding switch thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 2

[0032]Specific embodiment 2 of the switch cabinet of the present invention, the switch cabinet includes a cabinet body, and a three-phase grounding switch and a three-phase static contact are installed in the cabinet, and the three-phase grounding switch includes a base fixedly installed with the cabinet body, and on the base The rotating assembly is equipped with a transmission main shaft, and a connecting arm is vertically connected to the transmission main shaft. The outer end of the connecting arm is equipped with an integrated movable contact whose length extends along the axis of the transmission main shaft. The phase static contacts are disengaged and contacted to realize opening and closing. In addition to the form in the above-mentioned specific embodiment 1, the movable contact in this embodiment can also adopt other forms, such as: the movable contact is a bow-shaped plate, the lower end of which is fixed to the connecting arm, and the upper end is used as The clamp...

specific Embodiment 5

[0035] The specific embodiment 5 of the switchgear of the present invention, as a further optimization of any one of the specific embodiments 2 to 4, in order to improve the reliability of the electric conduction of the movable contact piece, the outer ends of the connecting arms are fixedly provided with gaskets, The plane where the gasket is located is perpendicular to the length extension direction of the connecting arm, and the gasket is fitted and fastened to the moving contact. In other embodiments, the connecting arm and the moving contact can be welded together, or the connecting arm can be bent At right angles, fit and fasten the moving contact through the bent part.

specific Embodiment 6

[0036] The specific embodiment 6 of the switchgear of the present invention, as a further optimization of the specific embodiment 4, in order to realize the stable grounding of the three-phase grounding switch, the three-phase static contacts are provided with corresponding contacts with the moving contacts In other embodiments, the grounding clip can also be replaced by a joint contact piece, which is in single-sided contact with the moving contact when the switch is closed.

[0037] The specific embodiments of the three-phase grounding switch of the present invention are the same as the specific embodiments of the three-phase grounding switch in the specific implementation of the switchgear of the present invention, and will not be repeated here.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/26H01H31/08H02B13/075H02B1/30
CPCH01H31/26H01H31/08H02B1/30H02B13/075
Inventor 高洁葛谜霞许世杰李小培杜磊董亚军
Owner HENAN HUASHENGLONGYUAN ELECTRICAL CO LTD
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