IEC 60068-2-14-2023 环境检测 第2-14部分测试-测试N温度变化
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IEC 60068-2-14
Edition 7.0 2023-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing-
Part 2-14:Tests-Test N:Change of temperature
Essais d'environnement-
Partie 2-14:Essais-Essai N:Variation de température
IEC
60068
-2-
14:20
23-
07(en
-fr)
IEC 60068-2-14
Edition 7.0 2023-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing-
Part 2-14:Tests-Test N:Change of temperature
Essais d'environnement-
Partie 2-14:Essais -Essai N:Variation de température
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.040 ISBN 978-2-8322-7265-7
Warning!Make sure that you obtained this publication from an authorized distributor.
Attention!Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agrée.
⑧Registered trademark of the International Electrotechnical Commission
Marque déposee de la Commission Electrotechnique Internationale
—2— IEC 60068-2-14:2023 ◎IEC 2023
CONTENTS
FOREWORD ...................................................................................................................................................4
INTRODUCTION ........................................................................................................................................... 6
1 Scope........................................................................................................................................................ 7
2 Normative references............................................................................................................................ 7
3 Terms and definition .............................................................................................................................7
4 Symbols ................................................................................................................................................ 8
5 General.................................................................................................................................................... 8
5.1 Field conditions of changing temperature............................................................................ 8
5.2 Design of tests with temperature change............................................................................... 9
5.3 Test parameter............................................................................................................................ 9
5.4 Purpose and choice of the tests ........................................................................................... 10
5.5 Choice of the exposure time to each conditioning temperature......................................10
5.6 Choice of the duration of the transfer time t2....................................................................11
5.7 Applicability limits of change of temperature tests ........................................................... 1
6 Initial and final measurement .......................................................................................................... 12
6.1 General ....................................................................................................................................... 12
6.2 Initial measurement ................................................................................................................ 12
6.3 Final measurements................................................................................................................ 12
7 Test Na: Rapid change of temperature...........................................................................................12
7.1 General description of the test...............................................................................................12
7.2 Testing procedure...................................................................................................................... 12
7.2.1 Testing chamber............................................................................................................... 12
7.2.2 Mounting or supporting of the test specimen ............................................................15
7.2.3 Severities ...........................................................................................................................15
7.2.4 Preconditioning ................................................................................................................ 16
7.2.5 Test cycle .......................................................................................................................... 17
7.3 Recovery .................................................................................................................................... 19
8 Test Nb: Change of temperature with specified rate of change ............................................. 19
8.1 General description of the...te t………………………………………………………………19
8.2 Testing procedure...................................................................................................................... 20
8.2.1 Testing chamber............................................................................................................... 20
8.2.2 Mounting or supporting structure of the test specimen............................................20
8.2.3 Severities ........................................................................................................................ 20
8.2.4 Tolerance ...........................................................................................................................21
8.2.5 Preconditioning................................................................................................................... 2
8.3 Test cycle ...................................................................................................................................22
8.4 Recovery.................................................................................................................................... 23
9 Test Nc: Rapid change of temperature , two-fluid-bath method................................................ 24
9.1 General description of the test.............................................................................................. 24
9.2 Testing procedure...................................................................................................................... 24
9.2.1 Testing equipment............................................................................................................24
9.2.2 Severities .......................................................................................................................... 24
9.2.3 Conditioning .................................................................................................................... 24
9.3 Test cycle ...................................................................................................................................25
9.4 Recovery .................................................................................................................................... 25
10 Information to be given in the test repor........................................................................................ 26
摘要：
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IEC60068-2-14Edition7.02023-07INTERNATIONALSTANDARDNORMEINTERNATIONALEEnvironmentaltesting-Part2-14:Tests-TestN:ChangeoftemperatureEssaisd'environnement-Partie2-14:Essais-EssaiN:VariationdetempératureIEC60068-2-14:2023-07(en-fr)IEC60068-2-14Edition7.02023-07INTERNATIONALSTANDARDNORMEINTERNATIONALEEn...
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作者：冒牌货
分类：法规规范
价格：150质量币
属性：35 页
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时间：2025-12-12
