| 摘要 |
PURPOSE:To use an electric apparatus without paying attention to exceeding a rated available current. CONSTITUTION:Three ports 4, 5, 6 for a power supply connected with an electric apparatus are provided in plug socket states on a front surface of a body case. The port 4 is used for monitoring. One feeder 14 is connected to one terminals of the ports 4, 5, 6, and the other feeder 15 is connected to the other terminals of the ports 4, 5, 6. In this case, relay switches 17, 18 are inserted between the one terminal of the ports 5, 6 and the feeder 14. When a detected value of a current detector 20 for detecting an available current value of the port 4 exceeds a threshold value to be set by an up/down key 7, a controller 19 turns OFF switches 17, 18 to cut OFF power supplies of the ports 5, 6. |
