Frame-type circuit breaker with mechanical short-circuit self-locking function

Abstract

A frame-type circuit breaker with mechanical short circuit self-locking function comprises: a frame-type circuit breaker body (1), a short circuit detecting component (23), a short circuit action triggering mechanism, and a mechanical self-locking mechanism. The short circuit detecting component is in a pivoted state in the frame-type circuit breaker body and can mechanically rotate when short circuit fault occurs in a phase line connected with the frame-type circuit breaker body to form a strong magnetic field. The short circuit action triggering mechanism is combined with the short circuit detecting component and provided with a triggering end (246) that is combined with a breaking mechanism in the frame-type circuit breaker body. The short circuit action triggering mechanism works along with the mechanical rotation action of the short circuit detecting component so that the triggering end triggers the breaking mechanism to have a breaking action. The mechanical self-locking mechanism makes the breaking mechanism unable to reset automatically.

Description

technical field [0001] The invention relates to a frame-type circuit breaker, in particular to a frame-type circuit breaker with a self-locking function when a short-circuit fault occurs. Background technique [0002] Frame type circuit breaker is a very important power equipment, widely used in the field of power consumption management, but still has the following defects. [0003] As far as the function of the existing frame circuit breaker is concerned, it cannot display the state of the power grid when a short-circuit fault occurs, and if the short-circuit fault is not eliminated, if the switch is closed by mistake, it will cause damage to the electrical equipment and the circuit breaker. It causes great damage by itself, and more importantly, it seriously threatens the safe operation of the power grid. [0004] In view of the above-mentioned defects, the author of the present invention has finally obtained this creation through long-term research and practice. Conten...

AI Technical Summary

Problems solved by technology

[0003] As far as the function of the existing frame circuit breaker is concerned, it cannot display the state of the power grid when a short-circuit fault occurs, and if the short-circuit fault is not eliminated, if the switch is closed by mistake, it will cause damage to the electrical equipment and the circuit breaker. It causes great damage, and more importantly, it seriously threatens the safe operation of the power grid.

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