Power supply unit and connector connection failure detection method

摘要

A power supply unit adapted to supply power from a power supply section to a load via a plurality of power supply lines connected by an on/off switch and connectors. The power supply unit includes a load open detection section for detecting an open state between the on/off switch and the load, a monitor section for monitoring the number of times the open state has been entered per unit time based on the detection result of the load open detection section, and a control section for controlling the on/off switch off when the number of times the open state has been entered per unit time is greater than a predetermined number of times.