UNE EN 61557-8:1998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 - Part 8: Insulation Monitoring Devices For It Systems
出版：Asociacion Espanola de Normalizacion
专家解读视频
Defines requirements for insulation monitoring devices for permanent monitoring of the insulation resistance to earth of unearthed IT a.c. systems, for IT a.c., in addition to unearthed d.c. systems having voltages up to 1500 V d.c. independent from measuring method.
SS EN 61557-8 Ed. 1 (1998) - Identical
I.S. EN 61557-8:2007 - Identical
NF EN 61557-8:2007 - Identical
NBN EN 61557-8:1998 - Identical
IEC 61557-8 Ed. 2.0 - Identical
DIN EN 61557-8 (2007-12) - Identical
BS EN 61557-8:2007 - Identical
SN EN 61557-8:1997 - Identical
