Movable and static contact connection assembly and high-voltage isolation grounding switch

Abstract

The invention relates to a movable and static contact connection assembly and a high-voltage isolation grounding switch thereof. The movable and static contact connection assembly comprises a movable contact and a static contact which are inserted and matched correspondingly; the static contact comprises a static contact finger and a static arc contact which is arranged axially at the center of astatic contact seat; the static arc contact is provided with a cylindrical contact lever which extends axially and is integrated circumferentially; the center of the matched end part of the movable contact and the static contact finger is provided with a mounting hole extending axially; the mounting hole is internally provided with a hollow columnar movable arc contact which is inserted and matched with the contact lever of the static arc contact in switching on; and the static arc contact and the active arc contact are inserted, contacted and matched. The integral cylindrical structure is adopted for the static arc contact arranged on the movable and static contact connection assembly and the high-voltage isolation grounding switch static contact, also the movable contact is internally provided with a corresponding inserted and matched structure, the reduction of the strength of structure of the static arc contact caused by the splitting of the static contact finger for the opening on the static arc contact is avoided, and simultaneously the problem of in accurate excess of stroke after deformation is avoided caused by the easily-deformed pin finger on the static arc contact.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electrical equipment and devices, and relates to a high-voltage isolation grounding switch of a gas-insulated metal-enclosed switchgear. Background technique [0002] Used in gas-insulated metal-enclosed switchgear, the dynamic and static contacts or the dynamic and static contact assembly of the isolating earthing switch currently have the following two modes: (1) The static contact or the static contact assembly, using the spring ring to fix the static contact The contact fingers make the static contact fingers form a cup structure. When switching on, the moving contact is directly inserted into the cup, and there is no guide ring or guide rod at the assembly place of the static contact or the static contact. Coaxiality; (2) The application number is 200680013925.3, which discloses a patent document named "Load Isolation Switch", in which the static arc contact (called "contact pin" in the...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a dynamic and static contact connection assembly to solve the problem of poor assembly coaxiality of the existing structure of the isolating earthing switch or the easy deformation of the pins on the static arc contact, resulting in inaccurate overtravel, and at the same time provide a High-voltage isolating earthing switch using the moving and static contact connection assembly

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