NF EN 61643-21/A1

Low voltage surge protective devices - Part 21 : surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods

Le présent document modifie l'avant-propos, les articles 1, 2, 3, 4, 5, 6, les annexes B, C, D, E, la bibliographie et l'annexe ZA. Le présent document entre dans le champ d'application de la Directive Basse Tension n° 2006/95/CE du 12/12/2006.

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