Standard

NEK IEC 61643-21:2000

Withdrawn

Note: This standard has a new edition: NEK IEC 61643-21:2025

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Abstract

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.

Document information

  • Standard from NEK
  • Published:
  • Withdrawn:
  • Edition: 1.0
  • Version: 1
  • Document type: NAT
  • ICS 29.240.10
  • National Committee NEK/NK37

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