Electronic circuit breaker with self-test function and its self-diagnosis method

Abstract

An electronic circuit breaker with self-test function and its self-diagnosis method. The circuit breaker housing is provided with an electronic controller, and the electronic controller includes a controller chip MCU, a self-test function device, an indicator light, an LCD display, and a navigation keyboard. and detection module, the self-test function device, indicator light, LCD display, navigation keyboard and detection module are all connected with the controller chip MCU; the self-test function device is arranged on the electronic controller, and the self-test function device is provided with The self-test button also includes a battery module that can supply power for the electronic controller, the detection module and the magnetic flux converter of the electronic circuit breaker in the non-working state. After pressing the self-test button, the electronic controller first judges the electronic circuit breaker If it is in the non-working state, it will prompt the non-working state self-diagnosis information and enter the non-working state self-diagnosis mode. The detection of the product protection function can be realized without any external accessories in the non-working state.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a low-voltage electronic circuit breaker with a self-test function and a self-diagnosis method thereof. Background technique [0002] A low-voltage circuit breaker is a switching device that can not only switch on and off normal load current and overload current, but also switch on and off short-circuit current. At present, it has been widely used. [0003] The reliable operation of low-voltage circuit breakers is related to the safety of national life and property. In order to ensure the reliability of low-voltage circuit breakers, people generally set test buttons on thermal-magnetic products to test the reliability of product action mechanisms. With the construction of smart grid, the application of electronic circuit breaker products is becoming more and more extensive, but at present, electronic circuit breakers still lack the test and diagnosis function for...

AI Technical Summary

Problems solved by technology

With the construction of smart grid, the application of electronic circuit breaker products is becoming more and more extensive, but at present, electronic circuit breakers still lack the test and diagnosis function for their own functional integrity and reliability, or only have the test tripping function, or Individual products have product self-inspection function but need external accessories to be used in working condition. The product is put into working condition, because it is not known whether the protection function of the current product is complete, there will be more unpredictable risks

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