Switching-on structure of grounding knife of isolation switch

Abstract

The invention discloses a switching-on structure of a grounding knife of an isolation switch. The structure comprises a grounding knife bar and a static contact, wherein the static contact comprises apipe clamp and a connecting part; the pipe clamp is connected to the connecting part; through the above arrangement, the grounding knife bar is directly clamped into the static contact, the design ofa T-shaped moving contact is canceled, the structure of the grounding knife bar is simpler, the cost is saved, the pipe clamp is used for fixed contact, the grounding knife bar is clamped into the pipe clamp, the contact area is larger, and the cooperation is good.

Description

technical field [0001] The invention relates to a closing structure, more specifically, it relates to a closing structure of a grounding knife switch of an isolating switch. Background technique [0002] High-voltage isolating switch is an important switching device in the electrical system of power plants and substations. It needs to be used in conjunction with high-voltage circuit breakers. Its main functions are: to ensure the safety of high-voltage electrical appliances and devices during maintenance work, and to isolate voltage. It cannot be used with Cutting off, energizing load current and breaking short-circuit current can only be used for certain switching operations without strong arcing. The grounding switch attached to the high-voltage isolating switch connects the system to the ground network through the grounding contact. Whether the grounding is reliable or not will directly affect the safety of the workers. [0003] At present, the grounding switch of the hi...

AI Technical Summary

Problems solved by technology

[0003] At present, the grounding switch of the high-voltage isolating switch on the market adopts a T-shaped moving contact and an arc-shaped shrapnel static contact to make contact. The moving contact and the static contact are stuck, causing the grounding knife to be unable to be opened; when the grounding knife is closed, the grounding knife is jammed after the moving contact contacts the static contact, resulting in the phenomenon that the closing is not in place. Therefore, the equipment The personal safety of maintenance personnel poses a great threat, and at the same time increases the security risk of the power grid, seriously affecting power outages

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