Earth leakage protection device and earth leakage protection system

摘要

The leakage detector (11) detects the occurrence of leakage in the conductive path (7). The control unit (12) includes a first switch (61) provided in the conductive path (7), and a first switch provided in the conductive path (7) on the storage battery (21) side than the first switch (61). The open / close state of each of the two switches (62) is controlled based on the detection result of the leakage detection unit (11). The controller (12) opens at least the first switch (61) when the leakage detection unit (11) detects the occurrence of leakage during charging of the storage battery (21), and discharges the storage battery (21). When the leakage detector (11) detects the occurrence of leakage, at least the second switch (62) is opened.