| 摘要 |
PROBLEM TO BE SOLVED: To design a power supply system having a plurality of power supply devices of different voltages with secured safety and at low cost.SOLUTION: A first power supply device supplies a voltage to a load in a first voltage system. A second power supply device supplies a voltage to a load in a second voltage system having a higher voltage than that of the first voltage system. A switch RY electrically isolates the second power supply device from the load in the second voltage system. A management device manages the second power supply device. The first power supply device, the second power supply device and the management device have a common ground line. The management device turns off the switch on detecting that a current exceeding a set value flows through the ground line in the self-device. |
