GB/T 2423.1-2008 in English

《GB/T 2423.1-2008电工电子产品环境试验 第2部分：试验方法 试验A： 低温》由TC8（全国电工电子产品环境条件与环境试验标准化技术委员会）归口，TC8SC2（全国电工电子产品环境条件与环境试验标准化技术委员会气候环境试验分会）执行，主管部门为中国电器工业协会。
本部分规定的低温试验适用非散热和散热试验样品。
本部分代替GB/T 2423.1-2001《电工电子产品环境试验 第2部分：试验方法 试验A：低温》，与之相比，主要变化如下：
――删除了试验Aa：非散热试验样品温度突变的低温试验；
――删除了附录A、附录B、附录C、附录D、附录E；
――增加了试验Ae：散热试验样品温度渐变的低温试验――试验样品在整个试验过程通电。

1 Scope

This part of GB/T 2423 deals with cold tests applicable to both non heat-dissipating and heat-dissipating specimens. Tests Ab and Ad do not deviate essentially from earlier issues1). Test Ae has been added primarily for testing equipment that requires being operational throughout the test, including the conditioning periods.
The object of the cold test is limited to the determination of the ability of components, equipment or other articles to be used, transported or stored at low temperature.
Cold tests covered by this standard do not enable the ability of specimens to withstand or operate during the temperature variations to be assessed. In this case, it would be necessary to use GB/T 2423.22.
The cold tests are subdivided as follows:
− Cold tests for non heat-dissipating specimens
• with gradual change of temperature, Ab;
− Cold test for heat-dissipating specimens
• with gradual change of temperature, Ad,
• with gradual change of temperature, specimen powered throughout, Ae.
The procedures given in this standard are normally intended for specimens that achieve temperature stability during the performance of the test procedure.

2 Normative References

The following documents contain provisions which, through reference in this part of GB/T 2423, become provisions of this part. For dated reference, subsequent modification (excluding corrigendum content) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document referred to applies.

Contents
1 Scope
2 Normative References
3 Terms and Definitions
4 Application of Tests for Non Heat-dissipating Specimens Versus Tests for Heat-dissipating Specimens
5 Test Description
6 Test Procedure
7 Information to be Given in the Relevant Specification
8 Information to be Given in the Test Report
Appendix NA (Informative) Constituent Parts of GB/T 2423.1
Appendix NA (Informative) Relationship of Suffixes between Tests A: Cold and Tests B: Dry Heat