Publikuar
Is applicable to devices for surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient overvoltages. The purpose of these SPDs is to protect modern electronic equipment connected to telecommunications and signalling networks with nominal system voltags up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c. The contents of the corrigendum of March 2001 have been included in this copy.
PUBLISHED
IEC 61643-21:2000 ED1
60.60
Standard published
29 sht 2000
PUBLISHED
IEC 61643-21:2000/COR1:2001 ED1
PUBLISHED
IEC 61643-21:2000/AMD1:2008 ED1
PUBLISHED
IEC 61643-21:2000/AMD2:2012 ED1
IN_DEVELOPMENT
IEC 61643-21 ED2