Three-station isolation grounding switch mechanism

Abstract

The invention relates to the technical field of electrical switches, and discloses a three-station isolation grounding switch mechanism which integrates isolation and grounding functions and reduces the production cost. The mechanism comprises a mounting rack, an operation main shaft, a grounding knife holder, an isolation static contact seat, a main knife switch assembly and a transmission assembly. The mounting rack comprises a front plate, a rear plate, a grounding copper bar fixing plate, an isolation fixing plate and a connection copper bar fixing plate. The grounding knife holder is fixed on the grounding copper bar fixing plate; the isolation static contact seat is fixed on the isolation fixing plate; the main knife switch assembly comprises blades and spring pieces fixed to the outer sides of the corresponding blades, and the blades are rotationally connected to the connection copper bar fixing plate. The operation main shaft and the transmission assembly are matched, the mainknife switch assembly can be switched and connected between the grounding knife holder and the isolation static contact seat, the safety is effectively improved, meanwhile, a spring piece is matched,it is ensured that the two blades clamp the isolation static contact seat or the grounding knife seat, the electrical connection reliability is improved, the structure is simple, and the assembly efficiency and the production cost are improved.

Description

technical field [0001] The invention relates to the technical field of electrical switches, in particular to a three-position isolating grounding switch mechanism. Background technique [0002] Traditional electrical switches such as isolating switches and grounding switches are independent, and in the power system, the combination of switches is required to increase the safety performance of high-voltage equipment. However, the existing 12kV high-current inflatable cabinet (SF6) uses three-station The main types of isolating switches are ohm-garbo type or spring contact guiding copper rod type. The overall structure of these two three-position switches is complex, and the amount of copper parts is relatively large, so the manufacturing cost of the switch remains high. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a three-position isolating ...

AI Technical Summary

Problems solved by technology

[0002] Traditional electrical switches such as isolating switches and grounding switches are independent, and in the power system, the combination of switches is required to increase the safety performance of high-voltage equipment. However, the existing 12kV high-current inflatable cabinet (SF6) uses three-station The main types of isolating switches are Ohm Gabor type or spring contact guiding copper rod type. The overall structure of these two three-position switches is complex, and the amount of copper parts is relatively large, so the manufacturing cost of the switch remains high.

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