(JP6153404-A)      The battery power supply system comprises a battery power supply, and a DC-AC inverter for converting a DC output of the battery power supply to an AC output to supply it to a load. A breaker is electrically connected between an AC power system and the load. A breaker control circuit controls the conduction/break of the break device in accordance with information derived from a wireless communication system.    The frequency of the wireless communication system is around a middle wave broadcast band or a TV broadcast band. The break device control circuit includes a time information controller and an identification information controller.    ADVANTAGE -   Prevents reverse current and reverse charge without modifying inverter by adding solar cell generation system which may produce reverse current. Permits inexpensive introduction of transfer break system to solar cell generation system and quick release and reverse charge phenomenon.    (EP591620-B1)      The battery power supply system comprises a battery power supply, and a DC-AC inverter for converting a DC output of the battery power supply to an AC output to supply it to a load. A breaker is electrically connected between an AC power system and the load. A breaker control circuit controls the conduction/break of the break device in accordance with information derived from a wireless communication system.    The frequency of the wireless communication system is around a middle wave broadcast band or a TV broadcast band. The break device control circuit includes a time information controller and an identification information controller.    ADVANTAGE -   Prevents reverse current and reverse charge without modifying inverter by adding solar cell generation system which may produce reverse current. Permits inexpensive introduction of transfer break system to solar cell generation system and quick release and reverse charge phenomenon.    (EP718952-B1)      The battery power supply system comprises a battery power supply, and a DC-AC inverter for converting a DC output of the battery power supply to an AC output to supply it to a load. A breaker is electrically connected between an AC power system and the load. A breaker control circuit controls the conduction/break of the break device in accordance with information derived from a wireless communication system.    The frequency of the wireless communication system is around a middle wave broadcast band or a TV broadcast band. The break device control circuit includes a time information controller and an identification information controller.    ADVANTAGE -   Prevents reverse current and reverse charge without modifying inverter by adding solar cell generation system which may produce reverse current. Permits inexpensive introduction of transfer break system to solar cell generation system and quick release and reverse charge phenomenon.