GB/T 2423.63-2019 PDF English
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Environmental testing - Part 2: Test methods - Test: combined temperature (cold and heat)/low air pressure/vibration (mixed mode)
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GB/T 2423.63-2019: Environmental testing - Part 2: Test methods - Test: combined temperature (cold and heat)/low air pressure/vibration (mixed mode)
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GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 19.040
K 04
Environmental testing - Part 2.Test methods -
Test. combined temperature (cold and heat)/low air
pressure/vibration (mixed mode)
Issued on. MAY 10, 2019
Implemented on. DECEMBER 01, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 General description... 5
5 Test apparatus... 5
6 Mounting of specimens... 6
7 Severities... 6
7.1 General... 6
7.2 Temperature severity... 6
7.3 Air pressure severity... 6
7.4 Vibration severity... 7
7.5 Duration of combined test of temperature (cold and heat)/low air pressure/vibration
(mixed mode)... 10
8 Preconditioning... 12
9 Initial test... 12
10 Test... 13
10.1 Test preparation... 13
10.2 Conditioning test... 13
11 Intermediate test... 14
12 Recovery... 15
13 Final test... 15
14 Failure criterion... 15
15 Information to be given in the relevant specifications... 15
16 Information to be given in the test report... 16
Annex A (Informative) Guidelines... 18
Foreword
GB/T 2423 "Environmental testing - Part 2.Test methods" is divided into several
parts according to the test methods.
This Part is Part 63 of GB/T 2423.
This Part is drafted in accordance with the rules given in GB/T 1.1-2009.
This Part was proposed by and shall be under the jurisdiction of National
Technical Committee 8 on Environmental Conditions of Electric and Electronic
Products and Environmental Test of Standardization Administration of China
(SAC/TC 8).
Drafting organizations of this Part. Shanghai Institute of Quality Inspection and
Technical Research, Guangzhou University, The Fifth Electronics Research
Institute of the Ministry of Industry and Information Technology, Beihang
University.
Main drafters of this Part. Xu Yi, Wang Tingting, Shi Xiaowen, Xu Zhonggen, Ji
Chunyang, Wu Sa, Lu Zhaoming.
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, severities, test
procedure and other technical details for the combined test of temperature (cold
and heat)/low air pressure/vibration (mixed mode).
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
3 Terms and definitions
Terms and definitions defined 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 are applicable to this document.
4 General description
This test is a combined test of test A. cold, test B. dry heat, test M. low air
pressure, test N. change of temperature, and test Fi. vibration (mixed mode).
5 Test apparatus
The test apparatus shall comply with the requirements for test apparatus in
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 2423.56, GB/T 2423.58 and GB/T 2424.26.A.4 gives the
relevant information of the test apparatus.
6 Mounting of specimens
The mounting of the test specimens shall simulate the actual mounting state
and meet the mounting requirements of GB/T 2423.1, GB/T 2423.2, GB/T
2423.43 and GB/T 2423.58.
7 Severities
The frequency limits of the test frequency range selected by the relevant
specifications shall be selected as far as possible in accordance with the
number sequence...1, 2, 5, 10, 20, 50... The lower-limit frequency f1 starts at
a minimum of 1 Hz. The upper-limit frequency f2 reaches a maximum of 5000
Hz.
8 Preconditioning
The test specimens shall be preconditioned in accordance with relevant
regulations.
9 Initial test
In accordance with relevant specifications, the test specimens shall be subject
to appearance inspection and electrical and mechanical performance testing.
10 Test
The combined test chamber (room) is at the temperature of the test room. The
test specimen, under the condition of not being packaged and not energized, is
installed on the vibrating table according to the specified axle; and then the
vibration test is performed according to the severity specified by the relevant
specification.
11 Intermediate test
Intermediate test shall be completed in the shortest possible time before the
end of the test.
12 Recovery
At a rate of not more than 10 kPa/min, the air pressure in the test chamber
(room) returns to normal atmospheric pressure. During pressurization,
temperature control is not necessary.
13 Final test
In accordance with relevant specifications, the test specimens shall be subject
to appearance inspection and electrical and mechanical performance testing.
14 Failure criterion
The failure criterion shall be stipulated by the relevant specifications.
15 Information to be given in the relevant specifications
When the relevant specifications include this test, the details that shall be given
are shown in Table 3.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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