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 measures - Part 8: Insulation monitoring devices for IT systems IEC 61557-8:1997 ED1
17.220.20
Measurement of electrical and magnetic quantities
| 29.080.01
Electrical insulation in general
| 29.240.01
Power transmission and distribution networks in general
Buying
Revised
Scope
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.
Life cycle
NOW
WITHDRAWN IEC 61557-8:1997 ED1 99.60
Withdrawal effective Jan 29, 2007