Single-term three-room three-position operation independent resin insulating cylinder

Abstract

The invention relates to a single-term three-room three-position operation independent resin insulating cylinder, and the insulating cylinder comprises three parallel independent resin insulating cylinders, and the upper end faces of the resin insulating cylinders are provided with at least four insulating cylinder fixing threaded sleeves. The interior of each resin insulating cylinder is provided with a vacuum switch room, a grounding switch room and an isolation switch room, wherein the vacuum switch room, the grounding switch room and the isolation switch room are independent of each other. One side surface of the isolation switch room of each resin insulating cylinder is an incoming wire side, and one side surface of each grounding switch room is an outgoing wire side, wherein the incoming wire side is provided with an incoming wire hole and an observation hole, and the outgoing wire side is provided with an outgoing wire side and a touch-finger type grounding contact. The incoming wire holes are connected with incoming wire pipes, and the outgoing wire holes are connected with outgoing wire pipes. The cylinder provided by the invention is simple in bus structure, is good in visuality, is high in use safety, and is good in independent operation performance. Local damages do not affect the overall operation capability of equipment, and the equipment does not need to be disassembled during maintenance, thereby greatly improving the maintenance efficiency of the cylinder, and facilitating the improvement of the operation stability and continuity of a power distribution cabinet.

Description

technical field [0001] The invention relates to a single-item three-chamber three-position operation independent resin insulating cylinder, which belongs to the technical field of electric switchgear. Background technique [0002] At present, in the power distribution cabinet, the vacuum switch, grounding switch and isolating switch often need to be installed in a unified insulation device. The products of this type of insulation device in the market are roughly divided into three types. The first type: three-phase one Chamber inflatable two-position operation, structural design A, B, C are the same in an insulating resin room gas insulation, disadvantages 1. If one item fails, the entire steam tank room will be scrapped. 2. If there is air leakage, the three-phase insulation distance is not enough to cause an accident. 3. Vacuum switch has one operating position. There is no excessive position in the middle of one operating position of the isolating and grounding switch, ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the power distribution cabinet, the vacuum switch, grounding switch and isolating switch often need to be installed in a unified insulation device. The products of this type of insulation device in the market are roughly divided into three types. The first type: three-phase one Chamber inflatable two-position operation, structural design A, B, C three are the same in an insulating resin indoor gas insulation, disadvantages 1. If one item fails, the entire steam tank room will be scrapped

2. If there is air leakage, the three-phase insulation distance is not enough to cause an accident

There are also some designs that use rubber busbars in the front to convert them into upper, middle and lower. There are too many contacts, the resistance is large, the installation space is small, and the busbar mold is complicated.

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