Tripping system for molded case circuit breaker

Abstract

The invention provides a tripping system for a molded case circuit breaker. The tripping system comprises an execution mechanism used for pressing a tripping button on a molded case circuit breaker panel, and a measurement and control device used for collecting fault information of the load side of the molded case circuit breaker and controlling the execution mechanism. The measurement and control device collects fault information of a load side of the molded case circuit breaker, and after the fault information is analyzed and processed by the measurement and control device, when the fault information collected by the measurement and control device meets a preset tripping condition, the execution mechanism is controlled to press down a tripping button of the molded case circuit breaker, so that the molded case circuit breaker trips. The tripping system has the advantages that a common molded case circuit breaker without a tripping control function such as a leakage protection tripping function can be transformed into the circuit breaker with the leakage protection tripping function, and the tripping system is simple to implement, low in cost and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of protection of low-voltage electrical appliances, in particular to a modification scheme for protection tripping of a molded case circuit breaker. Background technique [0002] There are many outgoing circuit breakers in the low-voltage side distribution box (cabinet) of public transformers, generally ordinary molded case circuit breakers, which do not have the function of controlling tripping, such as the leakage protection tripping function. For the problem of personal electric shock, it is necessary to replace the above-mentioned ordinary molded case circuit breaker that does not have functions such as leakage protection tripping with a circuit breaker that has leakage protection tripping functions. [0003] Most common molded case circuit breakers are three-pole, and leakage circuit breakers are four-pole. Therefore, it is very difficult to replace ordinary molded case circuit breakers on site with fou...

AI Technical Summary

Problems solved by technology

[0003] Most ordinary molded case circuit breakers are three-pole, while leakage circuit breakers are four-pole. Therefore, it is very difficult to replace the ordinary molded case circuit breaker on site with a four-pole leakage circuit breaker. It is necessary to change the busbar, or even replace the entire distribution The electric box (cabinet) is very expensive, but to convert the molded case circuit breaker into a circuit breaker with opening function, such as installing an electric operating mechanism outside the circuit breaker, the cost is high, the volume is large, and the tripping response time is long

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