GB/T 2423.26-1992 Basic environmental testing procedures for electric and electronic products--Test Z/BM: combined heat/low air pressure tests (English Version)
This standard specifies the test purpose, test equipment, severity level and test procedures for the comprehensive test of high temperature (gradual temperature change and sudden change in temperature) and low pressure of heat dissipation and non-radiation test samples. The comprehensive test specified in this standard is usually used only when the test sample cannot be tested for a single environmental test to obtain the comprehensive environmental impact. The test methods specified in this standard are only applicable to test samples that can achieve temperature stability during the test. The test method specified in this standard can only test one heat dissipation test sample at a time, and the heat dissipation test sample should generally be carried out in a test box without forced air circulation according to the provisions of GB 2423.2. This standard is only applicable to pressure tests with air pressure greater than 1kPa. See GB 1920 for the relationship between altitude, pressure and temperature. The guidelines in GB 2423.2 on the application comparison of non-heat dissipation test sample test and heat dissipation test sample test also apply to this standard. Note: The definition of non-radiation test samples is in accordance with the provisions in GB2422, and the temperature of its hot spot should not be measured under low pressure.
GB/T 2423.26-1992 history
2020GB/T 2423.27-2020 Environmental testing—Part 2: Test methods—Test method and guidance: Combined temperature or temperature and humidity with low air pressure tests
2008GB/T 2423.26-2008 Environmental testing for electric and electronic products.Part 2 Test methods TestZ/BM:Combined dry heat/low air pressure tests
1992GB/T 2423.26-1992 Basic environmental testing procedures for electric and electronic products--Test Z/BM: combined heat/low air pressure tests