The performance of products and components is generally affected and restricted by their internal temperature, while the internal temperature is determined by the heat generated by itself and the surrounding environmental conditions. Whenever there is a temperature gradient in the system formed by the product and its surroundings, there is a heat transfer process between them. This section includes low-temperature and high-temperature tests, tests with sudden temperature changes and gradual temperature changes, heat dissipation test samples and non-heat dissipation test samples (the latter can be applied with or without artificial cooling). The test apparatus (box or chamber) is available with and without forced air circulation. See Appendix J for the general procedure diagram.
GB/T 2424.1-2005 history
2015GB/T 2424.1-2015 Environmental testing.Part 3:Supporting documentation and guidance.Cold and dry heat tests
2005GB/T 2424.1-2005 Environmental testing for electric and electronic products Guidance for high temperature and low temperature tests
1989GB/T 2424.1-1989 Basic environmental testing procedures for electric and electronic products--Guidance for high temperature and low temperature tests