Interchanging type whole solid insulation fixing switch loop

Abstract

The invention relates to an interchangeable total-solid insulation fixed switch loop, which is characterized in that the switch loop is divided into four interchangeable functional units, wherein a bus connection unit is arranged on the upper part, the upper bus connection unit is connected with a middle switch functional unit, the middle switch functional unit is connected with a feeder line unit thereunder, the lower feeder line unit is connected with a high-voltage measuring unit arranged at the side thereof, and the connection among various unit modules adopts uniform connection interface of mechanical and electrical parameter standards. Various unit devices are formed by pouring such insulation materials as epoxide resin or silastic and the exterior of the insulation layer is sprayed with a metal grounding layer and grounded reliably. The upper bus connection unit, the lower feeder line unit and the high-voltage measuring unit all adopt three phase integration design. The interchangeable total-solid insulation fixed switch loop has the advantages of strong interchangeability, tight overall protection, safeness, environmental protection, small volume, as well as less impact imposed by surrounding environment, condensation and pollutant and strong applicability, thus being suitable for large-batch standardized production.

Description

technical field [0001] The invention relates to an interchangeable all-solid insulated fixed switch circuit, which belongs to the technical field of high-voltage power transmission and distribution switches. Background technique [0002] Air insulation, gas insulation and solid insulation are the main insulation methods for medium voltage switchgear. For air insulation, the insulation strength is low and the equipment is bulky. Since each live circuit is exposed to the air, maintenance personnel can touch it outside and cause serious consequences. If foreign objects enter the switchgear, serious safety problems may also occur. However, due to the low manufacturing process and technical difficulty of air-insulated switchgear and low equipment cost, it is currently widely used. Gas insulated switchgear has the characteristics of small size and high dielectric strength. At present, SF is mainly used 6 Gas as insulating medium, SF 6 Gas is a gas with excellent electrical pro...

AI Technical Summary

Problems solved by technology

[0004] First, each part of the equipment is not independent, and the connection interface between them is not uniform, which is not convenient for mass production. It can only be designed independently according to engineering requirements, and the investment in design and manufacturing costs is large and the cycle is long;

[0005] Second, when the equipment fails or the layout of a certain unit of the equipment needs to be adjusted according to the engineering needs, the equipment must be replaced as a whole, and all major designs need to be significantly changed

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