Circuit breaker with ability of quick reaction and separation and quick reaction and separation method for circuit breaker

Abstract

The invention discloses a circuit breaker with the ability of quick reaction and separation and a quick reaction and separation method for a circuit breaker. The circuit breaker comprises a broken circuit contact group and a joint contact group; the broken circuit contact group comprises a movable broken circuit contact; the joint contact group comprises a movable joint contact; and a movable contact limiting device used for limiting position moving of the broken circuit contact and / or the joint contact is arranged between the broken circuit contact group and the joint contact group. The quick reaction and separation method for the circuit breaker comprises a broken circuit opening step: the broken circuit contact, earlier than the joint contact, reversely moves and is separated independently, or the broken contact and the joint contact reversely move and are separated at the same time. The broken contact is adopted for replacing a fixed contact in the traditional technology, in the case when the broken circuit needs opening and breaking, quick separation between the contacts is realized due to two-way separation action between the broken circuit contact and the joint contact, the electric arc phenomenon can be avoided or reduced, the service life of the circuit breaker is prolonged, and the method can be widely applied to various circuit breaker.

Description

technical field [0001] The present invention relates to electric power control equipment, and more specifically, the present invention relates to a circuit breaker and a quick-response disengagement method of the circuit breaker. Background technique [0002] A circuit breaker (English name: circuit-breaker) refers to a switching device that can close, carry and break current under normal circuit conditions, and can close, carry and break current under abnormal circuit conditions within a specified time . [0003] At present, various circuit breakers have been widely used in real life. In the conventional technology, a circuit breaker generally includes a fixed contact in a fixed position and a movable engaging contact, and the engaging contact moves to break the circuit connection under abnormal circuit conditions. In the prior art, circuit breakers have the following defects: [0004] (1) The separation speed is slow. When breaking the circuit, since there is only one ...

AI Technical Summary

Problems solved by technology

[0005] The separation speed of moving, fixed contacts and mating contacts is slow, especially some mating contacts need pressure springs to reinforce the contact. When breaking and separating, the pressure spring needs to be stretched first, which reduces the separation speed between the contacts and is easy to cause Arcing, which damages the contacts and shortens the life of the circuit breaker

[0006] (2) The circuit breaker control is not flexible, and the circuit breaker cannot be opened at any time

[0007] A movable joint contact moves, and the circuit can only be broken by moving the joint contact, especially when the joint contact is in the process of closing or just closing, the circuit cannot be disconnected at any time, and there are potential safety hazards

[0008] (3) Complex structure

[0009] In addition to various arc extinguishing devices or devices, the structural design is complicated, which increases the cost of the circuit breaker

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