GB/T 2424.1-2015 English PDF

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GB/T 2424.1-2015: Environmental testing -- Part 3: Supporting documentation and guidance -- Cold and dry heat tests
Status: Valid

GB/T 2424.1: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 2424.1-2015	294	Add to Cart	3 days	Environmental testing -- Part 3: Supporting documentation and guidance -- Cold and dry heat tests	Valid
GB/T 2424.1-2005	RFQ	ASK	4 days	Environmental testing for electric and electronic products -- Guidance for high temperature and low temperature tests	Obsolete
GB/T 2424.1-1989	RFQ	ASK	6 days	Basic environmental testing procedures for electric and electronic products--Guidance for high temperature and low temperature tests	Obsolete

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Basic data

Standard ID: GB/T 2424.1-2015 (GB/T2424.1-2015)
Description (Translated English): Environmental testing -- Part 3: Supporting documentation and guidance -- Cold and dry heat tests
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K04
Classification of International Standard: 19.040
Word Count Estimation: 15,153
Date of Issue: 2015-10-09
Date of Implementation: 2016-05-01
Older Standard (superseded by this standard): GB/T 2424.1-2005
Quoted Standard: IEC 60068-1; IEC 60068-2-1; IEC 60068-2-2
Adopted Standard: IEC 60068-3-1-2011, IDT
Regulation (derived from): National Standard Announcement 2015 No.31
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 low and high temperature test related implementation guidance.

GB/T 2424.1-2015: Environmental testing -- Part 3: Supporting documentation and guidance -- Cold and dry heat tests

---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 3. Supporting documentation and low and high temperature test guidelines) ICS 19.040 K04 National Standards of People's Republic of China Replacing GB/T 2424.1-2005 Environmental testing - Part 3. Supporting documentation and guidance Low and high temperature test Environmentaltesting-Part 3. Supportingdocumentationandguidance- (IEC 60068-3-1.2011, Enviromentaltesting-Part 3-1. Supporting documentationandguidance-Coldanddryheattests, IDT) Issued on. 2015-10-09 2016-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions Select 4 test program 1 4.1 General Background 1 4.1.1 General 1 4.1.2 ambient temperature for 2 4.1.3 The test sample temperature for 2 4.1.4 Test samples without heat 2 2 4.1.5 test sample cooling 4.2 Principle of heat transfer 2 4.2.1 Convection 2 4.2.2 Radiation 6 4.2.3 Thermal conductivity 6 4.2.4 forced air circulation 6 4.3 chamber 6 4.3.1 General 6 4.3.2 Test chamber to achieve the required test conditions 7 4.4 Measuring 7 4.4.1 Temperature 7 4.4.2 air flow rate 7 Effect of Annex A (informative) airflow on chamber conditions and the surface temperature of the test sample 8 Appendix B (Informative Appendix) GB/T 2424 standard part 9 Figure 1 airflow resistance of the wound surface temperature influence the test data --- radial flow 3 Figure 2 airflow affect the test data on the surface temperature of the wire wound resistors --- axial airflow 4 Figure 3 is a uniform velocity in the heating cylinder 0.5m · s-1,1m · s-1 stream and a 2m · s-1 in the temperature distribution 5 Table 1 have a significant impact on the test results of thermal parameters of the test sample chamber 6

Foreword

GB/T 2424.1 is GB/T 2424 Part 1, part of the GB/T 2424 standard, see informative Annex NA. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 2424.1-2005 "electric and electronic products environmental testing of high and low temperature tests." And GB/T 2424.1-2005 Compared to the content and structure has a significant change. --- Increased in Chapter 1, Chapter 2, Section 3; --- GB/T 2424.1-2005 all text content and Figure B.1, B.2 and B.3 Figure in Part 4 of this chapter has been re Organization and presentation; --- Remove the GB/T 2424.1-2005 in "to IEC 60068-3-1. 1974" Basic environmental testing procedures Part 3. Background Materials Section 1. Cold and dry heat test "in the first supplementary document" of the contents; --- Deleted Appendix A, Appendix C, Appendix D, Appendix E, Appendix F, Appendix G, Appendix H, Appendix I, Appendix J. This section uses the translation method identical with IEC 60068-3-1.2011 "Environmental testing - Part 3-1. Supporting documentation and guidance hypothermia And high temperature test. " Consistency correspondence between this part of international documents and normative references of our files are as follows. --- GB/T 2421.1-2008 Environmental testing for electric and electronic products overview and guidance (IEC 60068-1. 1988, IDT) --- GB/T 2423.1-2008 Environmental testing for electric and electronic products Part 2. Test methods Test A. Cold (IEC 60068-2-1.2007, IDT) --- GB/T 2423.2-2008 Environmental testing for electric and electronic products Part 2. Test methods Test B. Dry heat (IEC 60068-2-2.2007, IDT) This part of IEC 60068-3-1.2011 compared to, mainly to do the following editorial changes. --- This part of the name to read. "Environmental testing - Part 3. Supporting documentation and guidance low and high temperature test"; --- Corrected Fig. 3 "unit surface area of \u200b\u200bthe cooling units" by "kWm · s-1" to "kW · m-2"; --- Added "part of the GB/T 2424 standard" informative annex (see Appendix NA). This part of the National Electrical and Electronic Products Environmental Technology Standardization Committee (SAC/TC8) and focal points. This section drafted by. China Electric Apparatus Research Institute Co., Weikai Detection Technology Co., Ltd. of Guangdong Power Grid Co., Ltd. Electric Power Research Institute, Shenzhen Academy of Metrology and Quality Inspection, Ltd. Jiesheng marine equipment, Ningboaike Lighting Co. Shares the company. The main drafters of this section. Zhang Zhiyong, dare to expose new, Su Wei, Zhu Jianhua, Chen Yong, Shijie Jun, Lvwang Yan. This part of the standard replaces the previous editions are. --- GB 2424.1-1981, GB/T 2424.1-1989, GB/T 2424.1-2005. Environmental testing - Part 3. Supporting documentation and guidance Low and high temperature test

1 Scope

This section GB/T 2424 regulations regarding low and high temperature test implementation guide.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. IEC 60068-1 Environmental testing - Part 1. Overview and Guide (Environmentaltesting-Part 1. Generaland guidance) IEC 60068-2-1 Environmental testing - Part 2-1. Tests - Test A. Cold (Environmentaltesting-Part 2-1. Tests-TestA. Cold) IEC 60068-2-2 Environmental testing - Part 2-2. Tests - Test B. Dry heat (Environmentaltesting-Part 2- 2. Tests-TestB. Dryheat)

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Heat test sample heat-dissipatingspecimen Under free air conditions specified in IEC 60068-1 and the atmospheric pressure, when the heat reaches a steady state, measured obtaining the upper surface of the hottest Temperature is higher than the ambient air temperature 5K above the test sample. 3.2 Non-heat test sample nonheat-dissipatingspecimen Heat generated is insufficient to affect the temperature of the test sample and the ambient air temperature near the test sample. 3.3 Free air conditions free-airconditions Infinite space conditions, the movement of air space is affected only by the heat of the test sample. Select 4 test procedure 4.1 General background 4.1.1 General Performance of the test sample may be subjected to its operating temperature influences or constraints. The degree of influence depends on the test system (climatic or environmental test chamber ......

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