Vehicle-mounted switch device of high-speed train

Abstract

The invention provides a vehicle-mounted switch device of a high-speed train. The vehicle-mounted switch device comprises a box body, wherein the box body is connected among a next-compartment incoming cable, a current-compartment incoming cable and a pantograph incoming cable, an electrical apparatus component is arranged in the box body, and the box body is of a sealing structure and is filled with a sulfur hexafluoride gas. The vehicle-mounted switch device of the high-speed train has the advantages that the sulfur hexafluoride is adopted as a fully-sealed structure of an insulation medium, the influence of a dirty environment condition and altitude is avoided, the insulation strength is improved, no maintenance can be achieved, and the problem of insulation unreliability brought by that the existing vehicle-mounted switch devices of the high-speed trains are arranged at the roof and the bottom of a vehicle in a scattered and exposed way is solved.

Description

technical field [0001] The invention relates to a vehicle-mounted switchgear for a high-speed EMU. Background technique [0002] At present, the on-board switching devices of high-speed EMUs (composed of circuit breakers, isolating switches, grounding switches, lightning arresters, CTs, and PTs) are scattered on the roof and bottom of the car, and the main components are exposed to the atmospheric environment. The extreme heat and the test of the most complex operating environment such as condensation have caused the insulation performance of on-board switchgear to be extremely unstable, affecting the safety and reliability of the traction power supply system of high-speed EMUs. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide an on-board switchgear for high-speed EMUs. [0004] According to the main technical scheme adopted by the on-board switchgear...

AI Technical Summary

Problems solved by technology

[0002] At present, the on-board switching devices of high-speed EMUs (composed of circuit breakers, isolating switches, grounding switches, lightning arresters, CTs, and PTs) are scattered on the roof and bottom of the car, and the main components are exposed to the atmospheric environment. Extremely hot, withstanding the test of the most complex operating environment such as condensation, resulting in extremely unstable insulation performance of on-board switchgear, affecting the safety and reliability of the traction power supply system of high-speed EMUs

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