BigPatents India

A switch controller controlling a switch provided to a distribution line comprises fault judging mechanism for judging whether a fault occurs, opening mechanism for outputting an opening signal when a judgment result is a fault, fault frequency calculating mechanism for calculating the number of times of faults, closing lock mechanism for locking closing the switch when the number of times of faults is more than a predetermined allowable number of times, closing mechanism for outputting a closing signal after elapse of a predetermined time when the closing operation is not locked, a power-supply-side voltage is applied, and the switch is opened, closing confirmation mechanism for confirming that the switch is closed, and fault frequency resetting mechanism for resetting the number of times of faults when the closing confirmation mechanism confirms that the switch is closed. No. of Pages : 66 No. of Claims : 11