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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
標(biāo)準(zhǔn)編號(hào)： I.S. EN 61557-8:1999
發(fā)布時(shí)間：1999/1/15 0:00:00
標(biāo)準(zhǔn)類別：Standard
出版單位：National Standards Authority of Ireland
標(biāo)準(zhǔn)頁數(shù)：38
標(biāo)準(zhǔn)簡介
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.
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