Standard

NEK IEC 61643-21:2000

Tilbaketrukket

Merknad: Denne standarden har en ny utgave: NEK IEC 61643-21:2025

Forhåndsvisning

Rettelser og tillegg kjøpes separat.

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Tjenester

Omfang

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.

Dokumentinformasjon

  • Standard fra NEK
  • Publisert:
  • Tilbaketrukket:
  • Utgave: 1.0
  • Versjon: 1
  • Varetype: NAT
  • ICS 29.240.10
  • National Committee NEK/NK37

Produktrelasjon