I.S. EN 61557-8:1999被替代
Electrical Safety In Low Voltage Distribution Systems Up To 1 Kv A.c. And 1,5 Kv D.c. - Equipment For Testing, Measuring Or Monitoring Or Protective Measures - Insulation Monitoring Devices For It Systems
出版：National Standards Authority of Ireland
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基本信息
标准编号： I.S. EN 61557-8:1999
发布时间：1999/1/15 0:00:00
标准类别：Standard
出版单位：National Standards Authority of Ireland
标准页数：38
标准简介
Gives requirements for insulation monitoring devices which permanently monitor the insulation resistance to earth of unearthed IT a.c. and d.c. systems, and for IT a.c. systems with galvanically connected d.c. circuits.
替代本标准的新标准
