AC low-voltage draw-out switch cabinet equipped with top arc extinguishing gas device

Abstract

The invention discloses an AC low-voltage draw-out switch cabinet equipped with a top arc extinguishing gas device, and belongs to the technical field of power supply and distribution equipment. The AC low-voltage draw-out switch cabinet comprises a cabinet body. The external wall of the cabinet body is evenly provided with draw-out unit cabinets. The right side wall of each draw-out unit cabinet is provided with a protective lock. The left side wall of each draw-out unit cabinets is provided a slide rail. The top part of the cabinet body is provided with the arc extinguishing gas device. The bottom part of the internal cavity of the arc extinguishing gas device is provided with an insulator. The external wall of a grounding gap is sleeved by a lightning signal detector. The internal cavity of an arc extinguishing gas block shell is provided with an arc extinguishing gas block, a metal trigger sheet and a metal electrode sheet which are arranged from the top to the bottom in turn. The slide rails are additionally arranged so that the layout is enabled to be reasonable, the structure is compact and the draw-out operation of the draw-out unit cabinets is facilitated. The arc extinguishing gas device also has the effects of arc drawing, cooling and diffusion so that arc extinguishing is facilitated, and the objective of rapidly eliminating a lightning ground fault can be achieved.

Description

technical field [0001] The invention relates to the technical field of power supply and distribution equipment, in particular to an AC low-voltage withdrawable switchgear with an arc-extinguishing gas device on the top. Background technique [0002] Due to the unreasonable design of the existing AC low-voltage withdrawable switchgear, it is inconvenient to draw out, and the electrical components are loosely fixed in the unit cabinet, so the overall utilization rate of the switchgear is low. In order to avoid damage to the insulation of transmission lines caused by direct lightning strikes or flashovers caused by induced lightning, current power production departments generally use additional lightning protection gaps or various lightning arresters to protect power equipment. With the introduction of the concept of "smart grid", the research on the reliability of transmission lines is becoming more and more urgent, and the lightning protection of lines should be paid more att...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an AC low-voltage withdrawable switchgear with an arc-extinguishing gas device on the top, so as to solve the inconvenient extraction of the withdrawable unit cabinet proposed in the above-mentioned background technology, low utilization rate, and the arc-extinguishing gas device in the prevention Shortcomings of lightning means such as short life, frequent maintenance and replacement

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