A 40.5kv solid insulated switchgear

Abstract

The invention relates to a 40.5kV solid insulated switch cabinet, which includes a cabinet and three sets of solid insulated switches arranged in the cabinet. The solid insulated switch includes a circuit breaker and an isolating switch. The circuit breaker includes an incoming line connector and a vacuum interrupter. and insulating pull rods, the incoming line connector includes a first insulating cylinder and an incoming line contact seat placed in the first insulating cylinder, and the vacuum interrupter includes a second insulating cylinder and a vacuum interrupter placed in the second insulating cylinder, arc extinguishing The upper contact seat and the arc extinguishing lower contact seat, the upper end of the insulating rod is connected with the moving contact of the vacuum interrupter, the lower end of the insulating rod is connected with the circuit breaking mechanism through the transmission device, and the isolating switch includes outgoing line connectors, isolating connectors, and extensions and a fixing part, the isolating switch also includes 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. It has the advantages of compact structure, easy preparation, convenient assembly and disassembly, small occupied space, safety and reliability.

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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