| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems wherein construction is difficult since installation locations overlap when constructing an insulated state monitoring device and an earth leakage grounding protection device to electrical energy transformation facilities, where the insulated state monitoring device of a low-voltage electric path and the earth leakage grounding protection device are manufactured as separated products each, and determination of a system to be adopted is difficult in many cases since the insulated state monitoring device includes a plurality of different detection systems of which each system differs in each insulated state detection performance, and load facilities are not fixed especially when designing newly installed electric equipment. SOLUTION: Insulated state monitoring elements having different detection systems are integrated with earth leakage grounding protection elements to compose an insulation grounding monitoring unit for each system, and the insulation grounding monitoring units having different detection systems of insulated states and earth leakage grounding monitoring units are set to be in mutually freely replaceable device configurations, thus creating the insulation grounding monitoring device for mixedly using the respective systems. COPYRIGHT: (C)2010,JPO&INPIT
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