| 摘要 |
PROBLEM TO BE SOLVED: To improve accuracy in identifying a connected electric machine, in a power supply tap.SOLUTION: A power supply tap comprises: an outlet into which the plug of an electric machine is inserted; a second characteristic extraction part 305 that extracts a peak value for each period from the waveform of an electric current supplied to the electric machine, with the electric machine plug kept inserted in the outlet, and calculates variation in the extracted peak value in a predetermined time; and a second identification part 306 that identifies a machine corresponding to the degree of variation calculated by the second characteristic extraction part 305, from a machine group into which the electric machine is categorized according to the electric characteristic specified by the circuit configuration of the electric machine.SELECTED DRAWING: Figure 3 |
