GB/T 2423.2-2008 in English

《GB/T 2423.2-2008电工电子产品环境试验 第2部分：试验方法 试验B：高温》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。

1 Scope

This part of GB/T 2423 deals with dry heat tests applicable both to heat-dissipating and non heat-dissipating specimens. For non heat-dissipating specimens, Tests Bb and Bd do not deviate essentially from earlier issues1).
The object of the dry heat test is limited to the determination of the ability of components, equipment or other articles to be used, transported or stored at high temperature.
These dry heat tests 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 dry heat tests are subdivided as follows:
- Dry heat test for non heat-dissipating specimens:
• with gradual change of temperature, Bb.
- Dry heat tests for heat-dissipating specimens
• with gradual change of temperature, Bd;
• with gradual change of temperature, specimen powered throughout, Be.
The procedures given in this part are normally intended for specimens that achieve temperature stability during the performance of the test procedure.

2 Normative References

The following normative documents contain provisions which, through reference in this part of GB/T 2423, constitute provisions of this standard. For dated reference, subsequent amendments (excluding corrections) 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 editions of these documents are 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 Descriptions
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
Appendix NB (Informative) Relationship Between Lowercase Letters of Classification Codes for Test A: Cold Test B: Dry Heat