标准号:DIN EN 61557-8-2007 有效
英文名称:Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measurers - Part 8: Insulation monitoring devices for IT systems (IEC 61557-8:2007 + Corrigendum 2007-05); German version EN 61557-8:2007
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