一份技术报告，涉及IEC 60721-3中给出的条件与IEC 60068-2中定义的环境试验的相关性和转换。本文介绍了IEC 60721-4系列出版物，旨在为规范编写者提供指导，以及一组易于使用的表格，以帮助关联和转换这些条件。 本技术报告的目的是推荐可选择的环境试验，以证明在IEC 60721规定的气候和动态条件下，产品能够按照相关规范的规定正常运行或存活- 3.这些测试严重性，包括其建议的持续时间，并不是为了证明产品的可靠性，应向有关可用性、可靠性、可维护性和维护支持领域的出版物寻求指导。 虽然不可能对所有类型的产品、位置和应用建议严格程度，但可以建议对大多数产品进行适当的测试。指导信息已包含在建议的测试中，该测试描述了如何选择严重程度。 当IEC 60721-3中的条件不能充分描述特定环境或应用时，本指南中包含的基本原理也可用于帮助修改测试严重性。

A technical report dealing with the correlation and transformation of the conditions given in IEC 60721-3 to the environmental tests defined in IEC 60068-2. It is an introduction to the series of publications IEC 60721-4 which aims at providing the specification writer with guidance together with a set of easy-to-use tables to help correlate and transform these conditions. The purpose of this technical report is to recommend the environmental tests which may be chosen to demonstrate the capability of a product to function or survive satisfactorily as specified in the relevant specification when subjected to the climatic and dynamic conditions given by IEC 60721-3. These test severities, including their suggested duration, are not intended to demonstrate the reliability of the product, guidance for which should be sought from the publications concerning the field of availability, reliability, maintainability and maintenance support. Whilst it may not be possible to recommend severities for all types of product, locations and applications, it is possible to suggest tests which are adequate for the majority. Guidance information has been included with the suggested tests which describes how the severities have been chosen. The rationale contained in this guidance may also be used to help modify test severities when the conditions found in IEC 60721-3 do not adequately describe a particular environment or application.