A supply device comprises safety and monitoring device (50) separately associated with load. A load circuit is connected via connection unit to output of the safety and monitoring device. The load circuit has sensor units (31,32) for detecting electrical v...

An automotive vehicle includes a charge port integrated with the vehicle. The charge port includes electrical contacts configured to receive electrical power from an electric grid, and a fault interrupt circuit electrically connected with the electrical co...

A hierarchical stage in a power distribution system to which an earth-fault-protection apparatus 40 is connected is set by hierarchical stage level setting means 42, and a carrier signal indicating a hierarchical stage level is output to a power distributi...