Molded case circuit breaker with monitoring module and monitoring method

Abstract

The invention relates to a molded case circuit breaker with a monitoring module and a monitoring method, and belongs to the technical field of low-voltage circuit breakers, the molded case circuit breaker comprises a first mounting shell and a second mounting shell, the first mounting shell is internally provided with a circuit breaking module, and the second mounting shell is internally providedwith a fault monitoring module and a power supply; the outer side of the second mounting shell is connected with a display; the circuit breaking module controls the circuit to be connected or disconnected; the fault monitoring module acquires the working current value of the circuit breaking module and monitors the working state of the circuit based on the working current value; the display is used for displaying the working state; and the power supply supplies power to the fault monitoring module and the display. By the adoption of the scheme, the mutual inductor is prevented from being connected in a secondary wiring mode in the distribution box, meanwhile, the circuit condition of the circuit breaker can be monitored, when a fault occurs, the fault reason can be automatically judged, and the problem that troubleshooting of the fault reason is difficult is solved.

Description

technical field [0001] The invention belongs to the technical field of low-voltage circuit breakers, and in particular relates to a molded case circuit breaker with a monitoring module and a monitoring method. Background technique [0002] With the emergence of modern engineering facilities and equipment, the electricity consumption of all walks of life is increasing rapidly, especially the emergence of many high-rise buildings and large workshops. The demand for electricity for national production and life is constantly increasing. In the case of high reliability requirements, it is necessary to optimize the operation effect of the distribution network. [0003] In the prior art, the outlet side of the molded case circuit breaker in some distribution boxes (cabinets) samples the three-phase current by installing a transformer, samples the three-phase voltage on the external copper bar, and passes through the secondary line, the terminal and the power distribution The digit...

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Problems solved by technology

[0005] In view of the problems existing in the above-mentioned prior art, the object of the present invention is to provide a molded case circuit breaker with a monitoring module and a monitoring method, which avoids connecting the transformers through secondary wiring in the distribution box, and at the same time, can Monitor the circuit condition of the circuit breaker, and when a fault occurs, it can automatically determine the cause of the fault, which solves the problem of difficulty in troubleshooting the cause of the fault

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