| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a DC power feeding system capable of continuously operating the system stably and improving reliability of the system even when an accident due to short-circuit or the like occurs in a load device. <P>SOLUTION: A control circuit 23 of a power supply side semiconductor breaker 10 and a control circuit 33 of load side semiconductor breakers 11-1,.. perform a re-ON operation at least once, in which switch sections 16 and 19 are caused to be turned on after a predetermined re-ON interval elapses when a switch-off operation is performed after an overcurrent is detected. If a re-ON immediate blockage, that is, a switch-off operation being immediately performed after performing the re-ON operation, occurs since a given accident determination condition is not satisfied the re-ON operation is performed again and if the re-ON immediate blockage is performed since the accident determination condition is satisfied the re-ON operation is not performed again. A re-ON interval of the power supply side semiconductor breaker 10 is shorter than any re-ON intervals in the load side semiconductor breakers 11-1,... <P>COPYRIGHT: (C)2013,JPO&INPIT |
