GB/T 2423.45-2012: Environmental testing - Part 2: Test methods - Test Z/ABDM: Climatic sequence

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Scope

This part of GB/T 2423 provides standard composite test methods for determining the
suitability of a specimen when subjected to environmental conditions consisting of a
sequence of temperature, humidity and, where required, low air pressure environmental
stresses.
The order of application of the stresses AND the conditions for the change from one
step to the next have been chosen to accelerate and amplify degradation mechanisms of
the same type as those observed under natural climatic conditions.
NOTE. Environmental conditions occurring in nature are classified in GB/T 4797 and GB/T 4798.
This part may be applied to other electrotechnical products when the degradation
mechanisms are the same and the specified requirements for testing can be satisfied. In
other cases, it may form a basis for the writing of a similar test.
In this test, specimens are exposed to environmental tests in a standard order and
categorized according to the basic code defined in Appendix A of GB/T 2421.1-2008
except that the third group of digits is used as an indication of the number of cycles in
Step 5 of the damp heat cyclic Test Db (see Chapter 5 in GB/T 2423.4-2008). In the
climatic categories -/-/56, 40/-/-, etc., in this part, the dashes may be replaced by any of
the standard values appropriate to the space, as in the following examples. 55/100/56,
25/085/56, 40/085/21.Where any modification is necessary, the relevant specification
shall provide the necessary information for each step in the selected method (see
Chapter 8).
This test is frequently specified to follow other tests involving mechanical stress, for
example, tests for robustness of terminations, solderability, shock and vibration, as a
means of determining whether the sealing of the specimen has been damaged.

Basic Data

Standard ID	GB/T 2423.45-2012 (GB/T2423.45-2012)
Description (Translated English)	Environmental testing - Part 2: Test methods - Test Z/ABDM: Climatic sequence
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	K04
Classification of International Standard	19.040
Word Count Estimation	19,185
Older Standard (superseded by this standard)	GB/T 2423.45-1997
Quoted Standard	GB/T 2421.1-2008, GB/T 2422-2012, GB/T 2423.1-2008, GB/T 2423.2-2008, GB/T 2423.4-2008, GB/T 2423.21-2008, GB/T 2424.1-2005, GB/T 2424.2-2005, GB/T 4797.1, GB/T 4797.2, GB/T 4797.3, GB/T 4797.4, GB/T 4797.5, GB/T 4797.6, GB/T 4797.7, GB/T 4797.8, GB/T 479
Adopted Standard	IEC 60068-2-61-1991, MOD
Regulation (derived from)	National Standards Bulletin No. 41 of 2012
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the test sample in order to withstand the temperature, humidity and low air pressure (if necessary) the composition of the environment and other environmental stress conditions of environmental adaptability of a standard combinatio