IEC 60721-3-7 Ed. 3.0 en:2026

Current Revision
Classification of environmental conditions - Part 3-7: Classification of groups of environmental parameters and their severities - Portable and non-stationary use

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Classification of environmental conditions - Part 3-7: Classification of groups of environmental parameters and their severities - Portable and non-stationary use

IEC 60721-3-7:2026 classifies the groups of environmental parameters and their severities to which products are subject during portable and non-stationary use. This includes periods of transfer, down time, maintenance, and repair.

The environmental conditions encompassed by these groups include the environmental conditions occurring:

  • at locations where the product can be placed or used temporarily, and
  • during the transfer of products between different locations.

This third edition cancels and replaces the second edition published in 1995 and Amendment 1:1996. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

  • a) most classes have been replaced by completely new classes based on the use of new information obtained from referenced Technical Reports;
  • b) Table 1 through to Table 5 have been updated;
  • c) the content of the five informative annexes has either been incorporated into the main body of the document or deleted.
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