High-voltage vacuum relay

Abstract

The invention discloses a high-voltage vacuum relay which is characterized in that an upper sleeve is arranged at the upper end of a vacuum chamber, a magnetic driving mechanism is arranged in the upper sleeve, a moving contact is arranged at the lower end part, which extends into the vacuum chamber in a sealing manner, of a sliding part in the magnetic driving mechanism, a static contact aligned with the moving contact is arranged in the vacuum chamber, and the static contact is connected with a terminal arranged on the surface of the vacuum chamber. According to the invention, the insulating property is good, the problem of oxidation is avoided, electric arcs in vacuum are easy to diffuse, the abrasion of contacts is not easy to cause, and the high-voltage vacuum relay has the advantages of high dielectric strength, large rated bearing current and conversion current, small contact resistance of the contacts, stable work and the like; and through the mutual cooperation of the above structures, the problem of ablation of the moving contact and the static contact caused by electric arc is solved, the problem of low voltage resistance level of a traditional relay is solved, the relay device is small in size and safe to use, and the requirement of high voltage level for a charging pile and a 5G base station is met.

Description

technical field [0001] The invention belongs to the technical field of high-voltage relay structure improvement, in particular to a high-voltage vacuum relay. Background technique [0002] The relay is a commonly used switching device, which realizes the conduction and cut-off of the circuit through the contact and separation between the moving contact and the static contact, and is widely used in low-voltage and high-voltage circuit equipment. With the development of electric vehicles and 5G, a large number of corresponding charging piles and 5G base stations have also been built, and the voltage level of contactors or relays required by them is also getting higher and higher. The current demand voltage level reaches 3kV. The primary circuit voltage level of traditional nitrogen, radon and other gas-filled contactors or relays is usually below 600V. Because of its low gas insulation performance, it is increasingly unable to meet the needs of high-voltage charging piles and ...

AI Technical Summary

Problems solved by technology

The primary circuit voltage level of traditional nitrogen, radon and other gas-filled contactors or relays is usually below 600V. Because of its low gas insulation performance, it is increasingly unable to meet the needs of high-voltage charging piles and 5G base stations.

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