Standard No.:	GB/T 2423.63-2019
Chinese Name:	环境试验 第2部分:试验方法 试验:温度(低温、高温)/低气压/振动(混合模式)综合
English Name:	Environmental testing—Part 2:Test methods—Test:combined temperature(cold and heat)/low air pressure/vibration(mixed mode)
Professional Classification:	K04 Basic standards and general methods
ICS Classification:	19.040
Issued by:
Issued on:	2019-05-10
Implemented on:	2019-12-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	10000 words
Price(USD):	300 (USD)
Delivery:	via email in 1-3 business day

Environmental testing - Part 2: Test methods - Test: combined temperature (cold and heat)/low air pressure/vibration (mixed mode)

1 Scope

This part of GB/T 2423 specifies the basic requirements, severity, test procedures and other technical rules for the combined test of temperature (cold and heat)/low air pressure/vibration (mixed mode).

This part is applicable to determining the adaptability of products to storage, transportation and use under the combined conditions including temperature (cold and heat), low air pressure and vibration (mixed mode). For a combined test with the change of temperature, please refer to this part.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 2422 Environmental testing - Guide to drafting of test methods - Terms and definitions
GB/T 2423.1 Environmental testing for electric and electronic products - Part 2: Test methods- Tests A: Cold
GB/T 2423.2 Environmental testing for electric and electronic products - Part 2: Test methods - Test B: Dry heat
GB/T 2423.10 Environmental testing for electric and electronic products - Part 2: Tests methods - Test Fc: Vibration (sinusoidal)
GB/T 2423.21 Environmental testing for electric and electronic products - Part 2: Test methods - Test M: Low air pressure
GB/T 2423.22 Environmental testing - Part 2: Tests methods - Test N: Change of temperature
GB/T 2423.26 Environmental testing for electric and electronic products - Part 2: Tests methods - Test Z/BM: Combined dry heat/low air pressure tests
GB/T 2423.43 Environmental testing for electric and electronic products - Part 2: Test methods - Mounting of specimens for vibration, impact and similar dynamic tests
GB/T 2423.56 Environmental testing for electric and electronic products - Part 2: Test methods - Test Fh: Vibration, broadband random and guidance
GB/T 2423.58 Environmental testing for electric and electronic products - Part 2: Tests methods - Test Fi: Vibration - Mixed mode
GB/T 2424.26 Environmental testing for electric and electronic products - Part 3: Supporting documentation and guidance - Selecting amongst vibration tests

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 2422, GB/T 2423.1, GB/T 2423.2, GB/T 2423.10, GB/T 2423.21, GB/T 2423.22, GB/T 2423.26, GB/T 2423.43, GB/T 2423.58 and GB/T 2424.26 apply.

4 General description

This is a combined test consisting of Test A: cold, Test B: heat, Test M: low air pressure, Test N: change of temperature and Test Fi: vibration (mixed mode).

The test samples shall, at the laboratory temperature, be subjected to a vibration test, a temperature test and a combined test and temperature/low air pressure in sequence according to the test procedure. Finally, the test samples shall be subjected to a combined test of temperature (cold and heat)/low air pressure/vibration (mixed mode) by superimposing the vibration (of a mixed mode). When the test samples have passed a single vibration (of a mixed mode) test, a temperature test and a combined test of temperature/low air pressure, they can directly be subjected to the combined test of temperature (cold and heat)/low air pressure/vibration (mixed mode).

Whether a test sample shall be in working condition during the tests shall be determined by relevant specifications.

Annex A gives the guide rules of the tests.

5 Test equipment

The test equipment shall meet the requirements of CB/T 2423.1, GB/T 2423.2, GB/T 2423.10, GB/T 2423.21, GB/T 2423.22, GB/T 2423.26, GB/T 2423.56, GB/T 2423.58 and GB/T 2424.26 for test equipment. A.4 gives relevant information of the test equipment.

6 Installation of test samples

The installation of test samples shall simulate the actual installation and meet the installation requirements of GB/T 2423.1, GB/T 2423.2, GB/T 2423.43 and GB/T 2423.58. For the tests on heat-dissipating samples, the insulated pad between a test sample and the vibration table shall be of high rigidity and low thermal conductivity (of thermal insulation).

7 Severities

7.1 General