Ревидиран
Specifies 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.
ПОВУЧЕН
IEC 61557-8:1997 ED1
99.60
Повлачење ступило на снагу
29. 1. 2007.
ПОВУЧЕН
IEC 61557-8:2007 ED2