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TESTING DEVICE FOR INSULATION MONITORING DEVICE, INSULATION MONITORING DEVICE AND TESTING METHOD FOR INSULATION MONITORING DEVICE
TESTING DEVICE FOR INSULATION MONITORING DEVICE, INSULATION MONITORING DEVICE AND TESTING METHOD FOR INSULATION MONITORING DEVICE
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机译:绝缘监视装置的测试装置,绝缘监视装置和绝缘监视装置的测试方法
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摘要
PROBLEM TO BE SOLVED: To accurately grasp the operational state of an insulation monitoring device under a state that zero-phase currents flow in a zero-phase current detection sensor installed in the insulation monitoring device.SOLUTION: Currents for in-phase test having a phase the same as the phase of current components with resistance and currents for anti-phase test having a phase opposite to the phase of the current components with resistance are made to flow to a coil TL for test disposed at the detection object place of a zero-phase current detection sensor ZCT of an insulation monitoring device IO. From a current value Ihaving the in-phase components in the currents for in-phase test in a state that the currents for in-phase test are made to flow, and in a state that an abnormality detection signal is output in the insulation monitoring device IO and a current value Ihaving the anti-phase components in the currents for anti-phase test in a state that the currents for anti-phase test are made to flow, and in a state that the abnormality detection signal is output in the insulation monitoring device IO, a current value I in a state that the abnormality detection signal is output in the insulation monitoring device IO is calculated as I=(I+I)/2.
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