PD IEC/TS 60721-4-3:2023

Scope: This part of IEC 60721 deals with the correlation and transformation of the conditions given in This document provides test procedures and test severities for electrotechnical equipment operated at stationary weatherprotected locations for the product classes set out in An environment can consist of several environmental conditions such as dynamic, climatic, and biological, and other effects due to chemically and mechanically active substances. In this document, dynamic, air pressure, biological and climatic conditions have been considered. The purpose of this document is to provide the specification writer with guidance together with a set of easy-to-use tables which correlate and transform these environmental conditions.

PD IEC/TS 60721-4-3:2023 Referenced Document

IEC 60068-1:2013 Environmental testing - Part 1: General and guidance*， 2013-10-01 Update
IEC 60721-1 Classification of environmental conditions - Part 1: Environmental parameters and their severities*， 2002-10-01 Update
IEC 60721-3-3:2019 Classification of environmental conditions - Part 2-4: Environmental conditions appearing in nature - Solar radiation and temperature*， 2019-05-22 Update

1970 PD IEC/TS 60721-4-3:2023 Classification of environmental conditions. Guidance for the correlation and transformation of environmental condition classes of IEC 60721-3-3 to the environmental tests of IEC 60068. Stationary use at weather protected locations