CEI EN 61643-21
Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
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| Organization: | CEI |
| Publication Date: | 1 February 2014 |
| Status: | active |
| Page Count: | 40 |
| ICS Code (Power transmission and distribution networks): | 29.240 |
| ICS Code (Substations. Surge arresters): | 29.240.10 |
Document History
CEI EN 61643-21
February 1, 2014
Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
A description is not available for this item.
January 1, 2011
Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
La presente Variante introduce modifiche agli articoli dal primo al sesto e aggiunge gli Allegati D ed E.
Si noti che la Variante europea ha recepito la omonima variante IEC con modifiche evidenziate...
August 1, 2010
Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
La presente Variante introduce modifiche agli articoli dal primo al sesto e aggiunge gli allegati D ed E.
Si noti che la Variante europea ha recepito la omonima variante IEC con modifiche evidenziate...
January 1, 2003
Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
La presente Norma si applica ai limitatori di sovratensioni (SPD) atti alla protezione di reti di telecomunicazione e di segnale, con tensioni nominali fino a 1000 V efficaci in c.a. e 1500 V in cc,...