Conductive loop system with excellent magnetic blow-out effect

Abstract

The invention discloses a conductive loop system with an excellent magnetic blow-out effect. The system is characterized in that the system comprises a release which is fixedly connected with a static bar; a static contact and a static contact arc striking sheet which are connected with each other are arranged on the static bar, and a moving contact is arranged below the static bar; a moving contact equipotential arc striking sheet is arranged below the moving contact; the moving contact swings up and down between the static contact and the moving contact equipotential arc striking sheet around the rotating shaft; when the moving contact swings upwards in place, the moving contact contacts with the static contact; when the moving contact swings downwards in place, the moving contact and the moving contact equipotential arc striking sheet are contacted or the distance between the moving contact and the moving contact equipotential arc striking sheet is close; and the arc extinguish chamber is arranged on the right side of the static bar and the moving contact, and arc extinguish grid sheets are arranged in the arc extinguish chamber. According to the conductive loop system provided by the invention, when a short-circuit circuit occurs, the moving contact can be reliably repelled, and the rise of short-circuit current is limited. In addition, the system has an excellent magnetic blow-out effect, can quickly transfer electric arcs, effectively protects movable and static contacts, and improves the high-voltage breaking capacity of a product.

Description

[0001] This application is based on the application number 201810626350.7, the application date is June 15, 2018, the applicant is Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Shanghai Electrical Apparatus Research Institute, and the invention name is "a kind of A divisional application filed for the invention of "Conductive Loop System". technical field [0002] The invention relates to a conductive loop system used in a molded case circuit breaker. Background technique [0003] In addition to normally carrying the rated current, the circuit breaker also needs to break the abnormal fault current. During the breaking process, an arc will be generated. The arc temperature is extremely high, which will burn the current-carrying parts of the circuit breaker for a long time, and even burn it directly. Therefore, how to quickly transfer the arc to the arc extinguishing chamber has become the focus of the development of the circuit breaker. The common metho...

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Problems solved by technology

[0003] In addition to normally carrying the rated current, the circuit breaker also needs to break the abnormal fault current in the application. During the breaking process, an arc will be generated. The arc temperature is extremely high, which will burn the current-carrying parts of the circuit breaker for a long time, and even burn it directly

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