Knife switch type three-station shielded solid insulated vacuum switch module

Abstract

The invention discloses a knife switch type three-station shielded solid insulated vacuum switch module which includes a circuit breaker and a three-station switch. The circuit breaker includes a wireinlet cone conductor, a soft connector, a circuit breaker insulation pull rod, a vacuum arc-extinguishing chamber, an arc-extinguishing chamber static end conductor and a circuit breaker mechanism. The three-station switch includes an isolated static contact, a knife switch assembly, an isolated contact base, a wire outlet cone conductor, a three-station insulated pull rod, a connecting rod, a grounding contact and an isolated grounding mechanism. The wire inlet cone conductor, the vacuum arc-extinguishing chamber, the arc-extinguishing chamber static end conductor and the wire outlet cone conductor are poured in a shielded fixing sealing pole post. The whole knife switch assembly is placed in the shielded fixing sealing pole post, the problem that the assembly is not in place due to a small space is solved, the product reliability is high, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of high-voltage switchgear equipment, in particular to a knife-gate three-position shielded solid-insulation vacuum switch module. Background technique [0002] At present, the solid insulated ring network cabinets on the market make the isolating switch and the grounding switch into knife-type three-position switches. The pins need to be fixed on the conductor to fix the knife switch, and the soft connection at the moving conductive rod of the vacuum interrupter needs to be fastened with screws. , due to the protrusion of the pin shaft and the screw will cause the electric field to concentrate, thereby reducing the electrical performance of the product. The contact between the knife switch and the isolated static contact of the three-position switch is affected by the electromotive force, which will cause the knife switch to deviate from its original position for a long time, affecting the contact between t...

AI Technical Summary

Problems solved by technology

[0002] At present, the solid insulated ring network cabinets on the market make the isolating switch and the grounding switch into knife-type three-position switches. The pins need to be fixed on the conductor to fix the knife switch, and the soft connection at the moving conductive rod of the vacuum interrupter needs to be fastened with screws. , due to the protrusion of the pin shaft and the screw will cause the electric field to concentrate, thereby reducing the electrical performance of the product

The contact between the knife switch and the isolated static contact of the three-position switch is affected by the electromotive force, which will cause the knife switch to deviate from its original position for a long time, affecting the contact between the knife switch and the contact, the resistance becomes larger, and the heat of the conductive circuit exceeds the standard. have an accident

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