SYSTEM INTERCONNECTION INVERTER

摘要

PURPOSE:To automatically stop the interconnection operation when there is a fear of a fault due to a waveform distortion of an output current. CONSTITUTION:Power to be output from an inverter main circuit 2 is detected by a current controller 6, and a continuing time of the state in which the detected power is lower than a set value is measured by an operation controller 13. When the measured continued time exceeds a predetermined time, a system interconnection of the inverter is stopped by a fault discriminator 18.