Cena s DPH / bez DPH
sklademVydáno: 2012-07-27
IEC 61643-21:2000+AMD1:2008+AMD2:2012 CSV
Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
Parafoudres basse tension - Partie 21: Parafoudres connectés aux réseaux de signaux et de télécommunications - Prescriptions de fonctionnement et méthodes d'essais
Formát
Dostupnost
Cena a měna
Anglicky/Francouzsky Tisk
skladem
19734 Kč
Anglicky/Francouzsky PDF
K okamžitému stažení
19734 Kč
| Označení normy: | IEC 61643-21:2000+AMD1:2008+AMD2:2012 CSV |
| Vydáno: | 2012-07-27 |
| Jazyk: | Anglicky/Francouzsky |
Popis
IEC 61643-21:2000+AMD1:2008+AMD2:2012 CSV
IEC 61643-21:2000+A1:2008+A2:2012 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. This consolidated version consists of the first edition (2000), its amendment 1 (2008) and amendment 2 (2012). Therefore, no need to order amendment in addition to this publication.