Circuit breaker for distribution network automation

Abstract

The invention discloses a circuit breaker for distribution network automation. The circuit breaker comprises a fixing plate, a first insulator, a vacuum shell, a driving motor, a motor fixing plate, alimiting mechanism, a rack, a second insulator, a first support, a driving sleeve, a third insulator, a connecting plate, a coupler, a driving shaft, a driving coupling shaft, a first conductor rod,a second conductor rod, an extrusion spring, a sealing sleeve, a sealing ring, a fourth driving plate, a gear, a driving wheel sealing cover, a dynamic sealing structure, an insulating sleeve, a second contact, a limiting plate, a first driving plate, a second driving plate, a guide fixing ring, a driving plate, a clamping block, a third driving plate and a volute spiral spring. The distance between the second contact installed on the first conductor rod and the first contact installed on the second conductor rod transmitting current becomes larger after the first conductor rod and the secondconductor rod transmitting the current are disconnected through the relative swinging of the first conductor rod and the second conductor rod so that the recovery speed of meson strength is improved and the arc extinguishing time is shortened.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to a circuit breaker for distribution network automation. Background technique [0002] A circuit interrupter is an electrical part that is used to open an electrical circuit, interrupting the flow of electricity. A basic example of a circuit interrupter is a switch. A switch basically consists of two electrical contacts that are in one of two states : Closed, meaning that the two contacts are in electrical contact with each other, allowing current to flow between the two contacts; or open, meaning that the two contacts are not in electrical contact with each other, preventing current flow. [0003] In high voltage applications, as the two contacts separate, an arc can form in the gap between the two contacts. An arc is a plasma discharge between two points caused by an electric current that ionizes a gas in the air between the two points. [0004] The generation of arcs d...

AI Technical Summary

Problems solved by technology

[0004] The generation of arcs during the transition of the two contacts can lead to unwanted effects that negatively affect the operation of the circuit interrupter and even potentially lead to a safety hazard

These negative effects will also have adverse consequences on the operation of the circuit breaker, melting and evaporating the contact surface, burning out the insulating material, and causing fire, explosion and other dangers to the oil-filled equipment; Moving under heat can easily cause flashover and short circuit and hurt people or cause the expansion of accidents

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