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sklademVydáno: 2000-09-29
IEC 61643-21:2000
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 télécommunications - Prescriptions de fonctionnement et méthodes d'essais
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Anglicky/Francouzsky Hardcopy
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340.95 €
Anglicky/Francouzsky PDF
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| Označení normy: | IEC 61643-21:2000 |
| Vydáno: | 2000-09-29 |
| Jazyk: | Anglicky/Francouzsky |
DESCRIPTION
IEC 61643-21:2000
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.