Solid dead ring main unit

Abstract

The invention relates to the technical field of solid dead ring main units and discloses a solid dead ring main unit. The ring main unit comprises a cabinet body, cabinet doors, a door lock mechanism, a two-station mechanism, a three-station on-off operation mechanism and an embedded pole, wherein the embedded pole comprises an insulator, a two-station vacuum arc-extinguishing chamber, a three-station vacuum arc-extinguishing chamber, a first insulation draw bar and a second insulation draw bar. The ring main unit has the advantage of achieving full solid insulation of the embedded pole, and therefore full solid insulation of the solid dead ring main unit can be achieved and the solid insulation ring main unit can promote high-pressure switch equipment to develop towards miniaturization.

Description

technical field [0001] The invention relates to the technical field of solid insulating ring network cabinets, in particular to a solid insulating ring network cabinet. Background technique [0002] In high-voltage switchgear, if the insulating shell of the vacuum interrupter is exposed to the air, it is easy to be polluted by dust and moisture from the outside. In order to reduce the influence of the external environment, the outer shell of the vacuum interrupter is usually required to have sufficient length, which not only affects the miniaturization of the vacuum interrupter, but also affects the performance and reliability of the vacuum interrupter. Therefore, the vacuum interrupter The conductive parts related to the chamber and the circuit breaker are simultaneously embedded in an easily curable solid insulating material such as epoxy resin to form a pole, so that the entire circuit breaker pole becomes an integral part, which is called an embedded pole. [0003] The ...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, for the safe operation of equipment maintenance, the high-voltage circuit breaker switchgear is equipped with an isolating switch with a grounding function, and the high-voltage circuit breaker switchgear usually adopts a solid-insulated ring network cabinet, which generally adopts a solid-sealed two-station vacuum arc extinguishing The pole of the circuit breaker in the room is connected to the isolation switch, and the port of the isolation switch is insulated by air or SF6 gas. This kind of solid insulation ring main unit is not completely solid insulation, which will affect the development of high-voltage switchgear to miniaturization.

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