| 摘要 |
<p>A defective arc protection breaker comprises a signal sampling module(3) provided with a sampling unit and mounted inside an electric equipment, a microcomputer control unit(2), a contact switch(1) and a current detecting module(4) mounted on incoming line terminals of a power grid. The signal sampling module(3) sends signal of the sampling circuit of a sampling unit(31) to the microcomputer control unit(2) to process. The microcomputer control unit(2) controls on-off of the contact switch(1). The current signal sampling transformer of the sampling unit(31) is a hollow inductor.</p> |
