High-voltage AC vacuum circuit breaker

Abstract

The invention discloses a high-voltage AC vacuum circuit breaker, which comprises an operating system control box, a protection housing, a first pole column, a second pole column and a third pole column. The surface of the operating system control box at one side of an observation window is equipped with an energy storage operation handle; and the surface of the operating system control box at the other side of the observation window is equipped with a manual open-close control knob. The surfaces of the first pole column, the second pole column and the third pole column are respectively provided with a first insulation umbrella skirt. The surface of a vacuum arc-extinguishing chamber is equipped with the current transformer through a second metal installation flange. The top portion of the vacuum arc-extinguishing chamber is equipped with a wiring porcelain column through a bolt. The top portion of the operating system control box at the outer side of the first pole column, the second pole column and the third pole column is provided with the protection housing through long-neck bolts. The high-voltage AC vacuum circuit breaker has the advantages of being convenient to operate, high in safety and long in service life and the like through a series of structures.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a high-voltage AC vacuum circuit breaker. Background technique [0002] The high-voltage vacuum circuit breaker is named for its high-vacuum arc-extinguishing medium and the insulating medium of the contact gap after arc-extinguishing. It has the advantages of small size, light weight, suitable for frequent operation, and no maintenance for arc-extinguishing. It is used in power distribution The application in the network is relatively popular. The vacuum circuit breaker is an indoor power distribution device in a 3-10kV, 50Hz three-phase AC system. It can be used for the protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations. It is especially suitable for For places requiring oil-free, less maintenance and frequent operation, circuit breakers can be configured in central cabinets, double-layer cabinets, and fix...

AI Technical Summary

Problems solved by technology

[0003] However, most of the common high-voltage AC vacuum circuit breakers on the market are a combination of one or more poles. Although they can effectively protect the circuit in actual use, the effect is not good, and in use During the process, the high-voltage AC vacuum circuit breaker is often subject to external extrusion, collision and wear, resulting in damage to the high-voltage AC vacuum circuit breaker. Once damaged, it will seriously affect the entire circuit, while the traditional high-voltage AC vacuum circuit breaker does not It has self-protection function, so this prompts the birth of a high-voltage AC circuit breaker with self-protection function and better use effect

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