| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an insulation deterioration monitoring system that detects and monitors a leakage current of a ground insulation resistance related to insulation deterioration without reference to the frequency and voltage variation of an inductive load such as a motor. <P>SOLUTION: There is provided an insulation deterioration monitoring system that monitors the insulation deterioration of the ground insulation resistance on the basis of the voltage, frequency, and zero-phase current of an AC cable run connected to the inductive load. The insulation deterioration monitoring system includes monitoring means of monitoring a control state of the inductive load, and monitors the insulation deterioration by predetermined arithmetic means of computing the leakage current of the ground insulation resistance on the basis of the control state of the inductive load detected by the monitoring means. <P>COPYRIGHT: (C)2013,JPO&INPIT |
