INSPECTION DEVICE FOR SOLAR POWER SYSTEM AND SOLAR POWER SYSTEM INSPECTION METHOD

摘要

An inspection device is provided with a relay control unit (24) for controlling first to third shorting relays (19a, 19R, 19N), a DC power supply (77) for applying an inspection voltage having a waveform at least part of which is between the forward voltages of a bypass diode and diode characteristic of a solar cell panel (11), a current detection unit (72) for detecting a relay inspection current, and a fault determination unit (74) for determining whether there is a relay fault from a relay control signal and the inspection current.