| 摘要 |
PROBLEM TO BE SOLVED: To obtain DC resistance distribution with accuracy even when there is a difference between a resistance value of a registered device and an actual resistance value.SOLUTION: In a light circuit resistance measurement system, a DC resistance calculation device 10 is connected to a light circuit part 14. The DC resistance calculation device 10 comprises a DC resistance calculation unit 1a, a DC resistance meter 2, a DC power supply 3, voltage meters 4a and 4b, a device changeover unit 5, and switches S1-S6. The DC resistance calculation unit 1a includes: a DC resistance measurement unit 6 obtaining information on a DC resistance from the DC resistance meter 2; a voltage measurement unit 7 obtaining voltages VA and VB from the voltage meters 4a and 4b; a switch changeover unit 8 generating a changeover command to the switches S1-S6 and the device changeover unit 5 to change over the switches; and a resistance calculation unit 9 calculating the DC resistance of the circuit from a resistance value of the circuit, a voltage value, and a state of the switches. |
