| 摘要 |
The defective power source detecting apparatus of a power source supply system has: an output voltage monitoring circuit 16-1 to 16-N for monitoring the DC voltage on an output end of the rectifier circuit which is an output end of each power source apparatus, and for outputting a defect detecting signal to show that the defective state occurs, when the output of the rectifier circuit is abnormal; an inverter output monitoring circuit 18-1 to 18-N for monitoring an inverter output of each power supply apparatus, and for outputting a defect detecting signal to show that the defective state occurs, when the output of the inverter is abnormal; and a control circuit 50 for fetching the monitoring outputs of the output voltage monitoring means and the inverter output monitoring means, and for judging the power source apparatus corresponding to the case in which the outputs of the rectifier circuit and the inverter are abnormal, to be defective.
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