40.5 kV solid insulation switch cabinet

Abstract

The invention relates to a 40.5 kV solid insulation switch cabinet. The solid insulation switch cabinet comprises a cabinet body and three groups of solid insulation switches arranged in the cabinet body, the solid insulation switch comprises a circuit breaker and an isolation switch. The circuit breaker comprises an incoming line connecting part, a vacuum arc extinguishing part and an insulatingpull rod, the incoming line connecting part comprises a first insulating cylinder and an incoming line contact base arranged in the first insulating cylinder; the vacuum arc-extinguishing part comprises a second insulating cylinder, and a vacuum arc-extinguishing chamber, an arc-extinguishing upper contact base and an arc-extinguishing lower contact base which are arranged in the second insulatingcylinder. The upper end of the insulating pull rod is connected with a moving contact of the vacuum arc-extinguishing chamber; wherein the lower end of the insulating pull rod is connected with the circuit breaking mechanism through a transmission device, the isolating switch comprises an outgoing line connecting part, an isolating connecting part, an extension part and a fixing part, the isolating switch further comprises a hollow conducting rod and a lead screw for driving the conducting rod to move up and down, and the upper end of the lead screw is connected with the isolating mechanism through a gear box. The device has the advantages of being compact in structure, easy to manufacture, convenient to disassemble and assemble, small in occupied space, safe and reliable.

Description

technical field [0001] The invention relates to a high-voltage electrical switchgear, in particular to a 40.5kV solid insulation switchgear. Background technique [0002] At present, most of the 40.5KV switchgears widely used in the market use SF6 as the insulating medium, but SF6 is toxic after arc extinguishing, and it is easy to leak and produce greenhouse effect, which is not conducive to environmental protection. At the same time, the volume of the switchgear using SF6 as the insulating medium is relatively large, and the sealing performance of the air box is high, which increases the difficulty and cost of the process, and the detection and maintenance are more difficult and complicated. Contents of the invention [0003] The object of the present invention is to provide a 40.5kV solid insulated switchgear, which has the advantages of compact structure, easy preparation, convenient assembly and disassembly, small space occupation, safety and reliability. [0004] In...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the 40.5KV switchgear widely used in the market use SF6 as the insulating medium, but SF6 is toxic after arc extinguishing, and it is easy to leak and cause greenhouse effect, which is not conducive to environmental protection

At the same time, the volume of the switchgear using SF6 as the insulating medium is relatively large, and the sealing performance of the air box is high, which increases the difficulty and cost of the process, and the detection and maintenance are more difficult and complicated.

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