| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a DC power feeding system equipped with a semiconductor breaker, 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: Respective load side semiconductor breakers 11-1, .. of a DC power feeding system 1 repeat a retry operation when a current flowing in a semiconductor switch section 19 is determined to be an overcurrent as well as continuously turning off the semiconductor switch section 19 when the retry operation is performed a second retry frequency. A power supply side semiconductor breaker 10 of the DC power feeding system 1 repeats retry operation when a current flowing in a semiconductor switch section 16 is determined to be an overcurrent, and causes the semiconductor switch means 16 to be continuously turned off when retry operations are performed retry times more than respective retry times in all load side semiconductor breakers 11-1, .. in a state determined as the overcurrent. <P>COPYRIGHT: (C)2013,JPO&INPIT |
