Intermediate-voltage AC-DC high-power isolating switch with grounding function

Abstract

The invention discloses an intermediate-voltage AC-DC high-power isolating switch with a grounding function. The isolating switch comprises a base, transmission components, conductive components, insulating components, driving and control components and a grounding switch component. The grounding switch components comprises the components of a static contact which is arranged on an output terminal, a moving contact which can move relative to the static contact, and a static driving mechanism for driving the moving contact to move. The moving contact can realize on-and-off with the static contact in a motion process. The transmission components drive a contact driving mechanism to act in an action process. Furthermore when a moving knife switch is on with a wire inlet terminal, the moving contact is separated from the static contact. When the moving knife switch assembly is separated from the wire inlet terminal, the moving contact is on with the static contact. The insulating switch performs on-off controlling on the moving knife switch assembly and furthermore can realize on-off operation on the grounding switch component, thereby realizing switching-on of the grounding switch when the moving knife switch of the isolating switch is switched off, realizing a grounding function, and ensuring life safety of maintenance personnel in a locomotive.

Description

technical field [0001] The invention relates to a high-power power transmission and distribution system capable of turning on / off the power supply, used in medium voltage (3.6kV), high current (5.3kA), AC and DC dual-purpose and with grounding function. Power isolating switch; it is mainly used in urban rail transit traction power supply substations to supply power to the maintenance depot of electric locomotives or to unload power receiving equipment. After the subway vehicle enters the depot for maintenance, inspection and maintenance, it cuts off the power supply and at the same time passes the grounding function, so that the charge on the subway can be released to the ground, ensuring the personal safety of the maintenance and maintenance personnel on the locomotive. Background technique [0002] At present, the high-power isolating switches used in the field of urban rail transit in my country are basically the products of SECHRON of Switzerland and ALFA of the Czech Re...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing isolating switch products are heavily dependent on imports, and most of the products do not have the grounding function, or the products have the grounding function but the operation is cumbersome and the construction cost is high. High-quality, superior operability, and low-cost medium-voltage AC / DC high-power isolating switch with grounding function to meet the large demand for domestic urban rail transit operation

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