| 摘要 |
PURPOSE:To recover a conduction state when the recovery cancellation current value of a load is reached when a total load current value is broken by breaking the conduction to the load in a preset order when the total load current value exceeds a limitation current value. CONSTITUTION:A current I from a power supply 1 to a total load is detected by a total load current detection part 2 and a switcher 3n is broken via a switcher drive part 6n in a set order by a breaking order setting part 9 to stop power supply to a load 5n when the detected current exceeds a set value Im by a limitation current value setting part 8 stored at a memory part 12. The current value of the load 5n is detected by a current detection part 4n, each maximum value of each load is recorded at a memory part 12, and a value Inmin obtained by subtracting the maximum value from a limitation value Im is stored as the recovery cancellation current value of each load. Then, Icmin of the load is compared with the total current I in an order according to the recovery order setting part 10 and the conduction to the load recovers in the case of I<=Inmin. |
