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IEC 60721-3-4 Ed. 3.0 b:2019

Classification of environmental conditions - Part 3-4: Classification of groups of environmental parameters and their severities - Stationary use at non-weatherprotected locations
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IEC 60721-3-4 Ed. 3.0 b:2019

Classification of environmental conditions - Part 3-4: Classification of groups of environmental parameters and their severities - Stationary use at non-weatherprotected locations

PUBLISH DATE 2019
PAGES 36
IEC 60721-3-4 Ed. 3.0 b:2019

Classification of environmental conditions - Part 3-4: Classification of groups of environmental parameters and their severities.

Stationary use at non-weatherprotected locations.

IEC 60721-3-4:2019 classifies groups of environmental parameters and their severities to which products are subjected when installed for stationary use at non-weatherprotected locations.

Weatherprotected locations where products can be mounted for stationary use permanently or temporarily are addressed in IEC 60721-3-3.

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) Clause 1: reworded.
  • b) Clause 2: normative references have been updated.
  • c) Clause 3: definitions have been updated.
  • d) Clause 4: reworded and simplified.
  • e) Clause 5: revised and updated. Several classes have been replaced by completely new classes based on the use of new information obtained from referenced technical reports.
  • f) Defined values of chemically active substances are now by reference to ISO 9223.
  • g) Tables 1 through 5: updated.
SDO IEC: International Electrotechnical Commission
Document Number IEC 60721
Publication Date May 1, 2019
Language b - English & French
Page Count
Revision Level 3.0
Supercedes
Committee 104
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