Static contact and high-voltage switch

Abstract

The invention provides a static contact and a high-voltage switch, wherein the static contact comprises a static contact seat and a conductive contact finger installed on the static contact seat, theconductive contact finger is provided with an insertion hole for a moving contact to be inserted and also comprises an arc striking ring shielded above the conductive contact finger, and an inner holeof the conductive contact finger is used for being coaxial with the insertion hole so as to allow a moving contact rod to pass through. The static contact also comprises an arc suppression coil surrounding the outer side of the conductive contact finger, one end of the arc suppression coil is electrically connected with the arc striking ring, the other end of the arc suppression coil is electrically connected with the static contact seat, and an arc suppression magnetic field is generated when a current passes through the arc suppression coil. A shielding cover is fixed on the static contactseat and sleeves the arc suppression coil, the outer edge of the arc striking ring is arranged in a rounded corner manner, the upper end of the shielding cover extends to the lower side surface of thearc striking ring, the peripheral surface of the shielding cover is flush with the outer side surface of the shielding cover, and the arc striking ring and the shielding cover form an equipotential surface together, so that the internal electric field of the static contact can be balanced.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electrical equipment and devices, and in particular relates to a static contact and a high-voltage switch. Background technique [0002] With the continuous development of the power industry, sulfur hexafluoride gas-insulated fully enclosed distribution equipment (GIS for short) as an important electrical equipment has been widely used in the power field, and high-voltage switches are an important part of GIS, and their performance is crucial GIS has an important impact. [0003] Because high-voltage switches often carry relatively large voltage and current, arcing phenomenon often occurs at the fracture position during the opening and closing process. In order to avoid the arc from causing greater damage to the contacts, the high-voltage switch in the existing There are many arc-extinguishing structures. For example, the Chinese invention patent application with the publication number CN10...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a static contact to solve the problem of uneven distribution of the electric field inside the static contact in the prior art, and also provide a high-voltage switch to solve the distribution of the electric field inside the static contact of the high-voltage switch in the prior art uneven problem

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