Standard

NEK EN IEC 60721-3-9:2024

Published

Corrigendums and amendments are bought separately.

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Abstract

IEC 60721-3-9:2024 classifies groups of microclimatic conditions, to which components (basic parts, assemblies, built-in units) can be subjected inside products, which are used under the climatic conditions as classified in IEC 60721-3-3 and IEC 60721-3-4.This second edition cancels and replaces the first edition published in 1993, Amendment 1:1994 and Corrigendum 1:1995. This edition constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition:a) Clause 2 has been updated;b) Clause 4 has been re-edited and simplified;c) Annex A has been revised and updated;d) a new Annex B has been added and gives the origin of the constitutional diagram for humid air, which is the basis of drawing the climatogram for a microclimate.

Document information

  • Standard from NEK
  • Published:
  • Edition: 2024-05
  • Version: 1
  • Document type: NAT
  • ICS 19.040
  • National Committee NEK/NK104

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