ALTERNATING CURRENT CIRCUIT BREAKER WITH SELF-TEST CAPABILITY

摘要

A method of executing a self-test of an alternating current circuit breaker involves executing a self-test of the circuit breaker for each of a plurality of functional blocks, wherein a sequence and timing of the executing a self-test for each of the plurality of functional blocks is programmed in and executed under control of a processing unit, and entering a failure mode of the circuit breaker upon detection of a failure status in any one of the functional blocks. The alternating current circuit breaker includes a live line between a live supply connecting terminal and a live load connecting terminal, and a neutral line between a neutral supply connecting terminal and a neutral load connecting terminal, the plurality of functional blocks, and the processing unit, which is connected to the first and second galvanic separation switch, the bypass switch and the semiconductor switch element.

主权项

1. A method of executing a self-test of an alternating current circuit breaker, the method comprising:
executing a self-test of the circuit breaker for each of a plurality of functional blocks, wherein a sequence and timing of the executing a self-test for each of the plurality of functional blocks is programmed in and executed under control of a processing unit, and entering a failure mode of the circuit breaker upon detection of a failure status in any one of the functional blocks, wherein the alternating current circuit breaker comprises: a live line between a live supply connecting terminal and a live load connecting terminal, and a neutral line between a neutral supply connecting terminal and a neutral load connecting terminal for connecting an alternating current load to a mains supply, the plurality of functional blocks, the plurality of functional blocks comprising:
a bypass switch functional block comprising a bypass switch in the live line and associated operation circuitry;a first galvanic separation functional block comprising a first galvanic separation switch in the live line and associated operation circuitry;a second galvanic separation functional block comprising a second galvanic separation switch in the neutral line and associated operation circuitry; anda semiconductor switch functional block comprising a semiconductor switch element connected parallel to the bypass switch, and the processing unit, the processing unit being connected to the first and second galvanic separation switch, the bypass switch and the semiconductor switch element.