Auxiliary contact structure for universal circuit breaker and use method of auxiliary contact structure

Abstract

The invention discloses an auxiliary contact structure for a universal circuit breaker and a use method thereof. The auxiliary contact structure comprises a support; a first shifting rod is installed on the support, multiple sets of microswitches are installed in an inner cavity of the support, a main shaft is arranged at the bottom of the support, and one end of the first shifting rod is rotationally connected with the main shaft through a rotary connecting rod; the auxiliary connecting rod is connected with the microswitch through a first umbrella-shaped connecting rod and a second umbrella-shaped connecting rod, and a spring is arranged between the first umbrella-shaped connecting rod and the second umbrella-shaped connecting rod. According to the auxiliary contact structure for the universal circuit breaker, the first deflector rod, the rotary connecting rod, the auxiliary connecting rod, the first umbrella-shaped connecting rod, the second umbrella-shaped connecting rod, the spring, the main shaft and the like are matched for use, so that the microswitch can be reliably switched, the problem of false faults caused by bounce is avoided, and the overall safety and stability are improved; and the whole body and the microswitch are assembled into a modular structure, so that the installation, the storage, the transportation and the transfer are convenient.

Description

technical field [0001] The invention relates to an auxiliary contact structure for a universal circuit breaker and a using method thereof. Background technique [0002] The universal circuit breaker is an important control element in the power system. It mainly plays the role of protection against overload and short circuit, and its interior is usually equipped with an array of auxiliary switches. The auxiliary switch group is linked with the main shaft of the universal circuit breaker operating mechanism. By changing Its own on-off state provides a signal for opening and closing of the circuit breaker. When the universal circuit breaker is opened, the main shaft is limited by the limit shaft inside the mechanism, both of which are metal, and the collision between metal and metal will cause the main shaft to swing within a relatively large range. [0003] The traditional auxiliary contact is set by the main shaft of the universal circuit breaker and is linked with the main ...

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Problems solved by technology

[0004] The object of the present invention is to provide an auxiliary contact structure for a universal circuit breaker and its use method, so as to solve the problem that the auxiliary contact proposed in the above-mentioned background technology is set on the main shaft of the universal circuit breaker and is linked with the main shaft, so the main shaft is relatively low. When swinging in a large range, the connection of the auxiliary contact will also be affected, that is, a relatively large bounce will cause false faults in the power distribution system and affect the reliability of the power distribution system.

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