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GB/T 2423.40-2013: Environmental testing - Part 2: Test methods - Test Cx: Damp heat, steady state (unsaturated pressurized vapour)
Status: Valid GB/T 2423.40: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 2423.40-2013 | English | 374 |
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Environmental testing - Part 2: Test methods - Test Cx: Damp heat, steady state (unsaturated pressurized vapour)
| Valid |
GB/T 2423.40-2013
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| GB/T 2423.40-1997 | English | 439 |
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Environmental testing for electric and electronic products - Part 2: Test methods - Test Cx: Damp heat, steady state (unsaturated pressurized vapor)
| Obsolete |
GB/T 2423.40-1997
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| GB/T 2423.40-1990 | English | RFQ |
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Basic environmental testing procedures for electric and electronic products - Damp heat, steady state unsaturated pressurized vapour test
| Obsolete |
GB/T 2423.40-1990
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PDF similar to GB/T 2423.40-2013
Basic data | Standard ID | GB/T 2423.40-2013 (GB/T2423.40-2013) | | Description (Translated English) | Environmental testing - Part 2: Test methods - Test Cx: Damp heat, steady state (unsaturated pressurized vapour) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K04 | | Classification of International Standard | 19.040 | | Word Count Estimation | 19,163 | | Older Standard (superseded by this standard) | GB/T 2423.40-1997 | | Adopted Standard | IEC 60068-2-66-1994, IDT | | Regulation (derived from) | National Standards Bulletin 2013 No. 27 | | 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 standard test method for assessing a way to accelerate small electrical and electronic products (mainly non-airtight element) resistance to heat deterioration effects. This test does not live for the assessment of external effe | GB/T 2423.40-2013: Environmental testing - Part 2: Test methods - Test Cx: Damp heat, steady state (unsaturated pressurized vapour)
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Environmental testing Part 2.. Test methods Test Cx.. Damp heat, steady state (unsaturated pressurized vapour)
ICS 19.040
K04
National Standards of People's Republic of China
Replacing GB/T 2423.40-1997
Environmental testing - Part 2. Test methods
Test Cx. Damp heat, steady unsaturated pressurized
Environmentaltesting-Part 2. Testmethods-TestCx. Dampheat,
steadystate (unsaturatedpressurizedvapour)
(IEC 60068-2-66.1994, IDT)
Issued on. 2013-12-31
2014-07-13 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
1 Scope 1
Overview 1 2
Description 1 3 test device
4 severity 2
5 2 Initial Detection
6 Test 2
7 3 intermediate detection
8 Recovery 3
9 final inspection 3
10 related specifications should provide information 3
Appendix A (normative) Steam Tables 5
Annex B (informative) tests the physical meaning of 8
Determination of Annex C (informative) humidity 9
Annex D (informative) Test apparatus and process 11
Part of Annex NA (Informative Appendix) GB/T 2423 Standard 13
Foreword
This is Part 40 GB/T 2423, and part of the GB/T 2423 standard, see informative Annex NA.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB/T 2423.40-1997 "Environmental testing for electric and electronic products Part 2. Test methods - Test Cx. unsaturated
Constant pressure steam heat. "
Section compared with the GB/T 2423.40-1997 The main changes are as follows.
--- According to GB/T 1.1-2009 requirements, and on the formatting has been modified;
--- Increased the preamble;
--- Notes to Table 1 will be the format changes, and the original content Note 3 as a requirement into the text;
--- Increase the informative appendix NA.
This section uses the translation method identical with IEC 60068-2-66.1994 "Environmental testing - Part 2. Test methods - Test Cx. not full
Constant heat and high pressure steam, "the technical content of IEC 60068-2-66.1994 same, write the editorial changes made the following format.
--- Remove the IEC 60068-2-66.1994 foreword, preface to increase the national standards;
--- Increase the informative appendix NA.
This part of the National Electrical and Electronic Products Environmental conditions and environmental tests for Standardization Technical Committee (SAC/TC8) and focal points.
This section drafted by. China Electric Apparatus Research Institute Co., Ltd., Beijing University of Aeronautics and Astronautics, Chongqing Sida Test Equipment Co.,
Southern Jiangsu Wuxi Test Equipment Co., Ltd.
The main drafters of this section. Chen Xinxin, Yaojin Yong, Chen Yunsheng, Ni Yiming.
This part of the standard replaces the previous editions are.
--- GB 2423.40-1990, GB/T 2423.40-1997.
Environmental testing - Part 2. Test methods
Test Cx. Damp heat, steady unsaturated pressurized
1 Scope
This section GB/T 2423 provisions a way to accelerate the assessment of small electrical and electronic products (mainly non-airtight element) heat resistance
Standard Test Method for degradation effects.
This test is not used to assess external effects such as corrosion and deformation.
2 Overview
In this test, the test sample in a relatively short period of time did not withstand extremely high vapor pressure (see Appendix A).
This test is usually applied electrical bias.
As the pilot has a very high acceleration, may have a significant impact on the type of failure mode that may arise (see Appendix B), and hence, again
Select the test conditions to be carefully considered.
The test at 85% relative humidity conditions, provides for three groups of test temperature, test severity is determined by the temperature and duration of the test
Given.
It should be noted, do not test the temperature reaches the maximum rated temperature of the test sample and/or the critical temperature of the encapsulating material. For example, plastic glass
Glass transition temperature is typical of the critical transition temperature.
For plastic components, the deterioration is due to moisture absorption of plastic, caused by moisture penetration along the lead terminal.
3 test device instructions
3.1 Test Chamber
Chamber structure, shall meet the following requirements.
a) produce Table 1 gives the temperature and relative humidity, and maintain a given pressure value.
b) during the test to provide a controlled temperature, relative humidity and pressure conditions, and can be raised or lowered by the slope required to
Experimental conditions specified.
c) temperature and humidity chamber can be located in the working space and/or other areas (such as steam situated can give the same results
Sensitive means for monitoring generator) inside.
Note. The survey work space relative humidity is about guide in Appendix C.
d) before the start of the test water vapor the air can be used in a confined space is discharged outside the test chamber.
e) does not allow condensation water droplets fall on test samples.
f) structural materials used should not cause corrosion of the test sample, or the humidifying water quality degradation (see Appendix D of D.2).
Temperature tolerance of ± 2 ℃, is considered for measurement absolute error within the workspace temperature fluctuations and all points in between any point temperature
Variation terms.
However, the relative humidity is maintained at a predetermined tolerances within ± 5%, such that the temperature difference between any two points in the workspace (at any instant in
Inter) remains within a more narrow range.
If the temperature difference is greater than 1.5 ℃, relative humidity tolerances specified tolerance will also need to work periodically because the heater chamber
The temperature for a short time caused by fluctuation limit to similar values.
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