Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
NORMA vydána dne 29.9.2000
Designation standards: IEC 61643-21-ed.1.0
Publication date standards: 29.9.2000
The number of pages: 111
Approximate weight : 364 g (0.80 lbs)
Country: International technical standard
Kategorie: Technické normy IEC
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. Est applicable aux dispositifs de protection (parafoudres) contre les effets directs et indirects de la foudre ou des autres surtensions transitoires, pour les reseaux de telecommunications et de transmission de signaux. Ces parafoudres sont destines a proteger les equipements electroniques modernes, connectes aux reseaux de telecommunications et de transmission de signaux, ayant une tension nominale de fontionnement jusqua 1 000 V (efficace) en courant alternatif et 1 500 V en courant continu. Le contenu du corrigendum de mars 2001 a ete pris en consideration dans cet exemplaire.