IEC 60068-2-14:2009

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Field conditions of changing temperature
4 General
   4.1 Design of change of temperature tests
   4.2 Test parameters
   4.3 Purpose and choice of the tests
   4.4 Choice of the duration of the exposure
   4.5 Choice of the duration of the transfer time
   4.6 Applicability limits of change of temperature tests
5 Guidance for the selection of the kind of test
6 Initial and final measurements
   6.1 Initial measurements
   6.2 Final measurements
7 Test Na: Rapid change of temperature with prescribed
   time of transfer
   7.1 General description of the test
   7.2 Testing procedure
       7.2.1 Testing chamber
       7.2.2 Mounting or supporting of the test specimen
       7.2.3 Severities
       7.2.4 Conditioning
       7.2.5 Test cycle
   7.3 Recovery
   7.4 Information to be given in the relevant specification
8 Test Nb: Change of temperature with specified rate of
   change
   8.1 General description of the test
   8.2 Testing procedure
       8.2.1 Testing chamber
       8.2.2 Mounting or supporting of the test specimen
       8.2.3 Severities
       8.2.4 Conditioning
       8.2.5 Test cycle
   8.3 Recovery
   8.4 Information to be given in the relevant specification
9 Test Nc: Rapid change of temperature, two-fluid-bath
   method
   9.1 General description of the test
   9.2 Testing procedure
       9.2.1 Testing equipment
       9.2.2 Severities
       9.2.3 Conditioning
   9.3 Test cycle
   9.4 Recovery
   9.5 Information to be given in the relevant specification
10 Information to be given in the test report

IEC 60068-2-14:2009 provides a test to determine the ability of components, equipment or other articles to withstand rapid changes of ambient temperature. The exposure times adequate to accomplish this will depend upon the nature of the specimen. The major changes with regard to the previous edition concern:
- merging of the previous version of IEC 60068-2-14 with IEC 60068-2-33: Guidance on change of temperature tests;
- updating of the figures, changes to some of the wording and editorial corrections made for clarification.