| 摘要 |
A battery charger for charging an electrically-driven vehicle by connecting the electrically-driven vehicle with an external power source, the battery charger includes an earth leakage detector 1 operable to detect earth leakage of the battery charger; an earth leakage circuit breaker 2 operable to switch energization from the external power source; an earth leakage confirmation relay 3 capable of forcibly causing earth leakage in a downstream circuit of the earth leakage detector 1; a resistor unit 5 connected in serieswith the earth leakage confirmation relay 3 and capable of being set to any one of a plurality of leakage current values; and a controller 8 operable to switch the earth leakage circuit breaker 1 based on a detection result of the earth leakage detector 1 while forcibly causing earth leakage in the downstream circuit. |
