| 摘要 |
PROBLEM TO BE SOLVED: To enable prevention of occurrence of a state in which an output current of a specific channel cannot be measured for a long term.SOLUTION: A multi-channel power controller is provided with: a voltage measurement unit 2 which measures a power source voltage applied to all channels by means of an AC power source 1; a current measurement unit 5 which selects a channel CTas a measurement object among respective channels CTto CTwhile referring to a table in which a channel as a measurement object is recorded, and takes in a detection signal Ioutput from the CTso as to measure the current; a load resistance value calculation unit 10 which every time an output current value Iis output from the current measuring unit 5, on the basis of the output current value Iand the output voltage value Voutput from the voltage measuring unit 2, calculates a resistance value Rof a load (m) of a channel selected by a current measurement channel selecting unit 6, and changes a resistance value of a load (m) stored in the load resistance storing unit 9 to R; and so on. |
