EN IEC 60068-3-1:2023
(Main)Environmental testing - Part 3-1: Supporting documentation and guidance - Cold and dry heat tests
Environmental testing - Part 3-1: Supporting documentation and guidance - Cold and dry heat tests
IEC 60068-3-1:2023 is available as IEC 60068-3-1:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60068-3-1:2023 provides guidance regarding the performance of cold and dry heat tests. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) information relating to specimen temperatures has been revised; b) information relating to tests of multiple specimens has been revised; c) the effect of air density has been added; d) a recommendation for corrective actions regarding IR radiation has been added; e) the requirements for the mounting and supports of the specimen have been revised.
Umgebungseinflüsse - Teil 3-1: Unterstützende Dokumentation und Leitfaden - Prüfungen Kälte und Trockene Wärme
Essais d'environnement - Partie 3-1: Documentation d'accompagnement et recommandations - Essais de froid et de chaleur sèche
IEC 60068-3-1:2023 est disponible sous forme de IEC 60068-3-1:2023 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60068-3-1:2023 fournit des recommandations concernant l'exécution des essais de froid et de chaleur sèche. Cette troisième édition annule et remplace la deuxième édition parue en 2011. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) les informations relatives à la température des spécimens ont été révisées; b) les informations relatives aux essais sur plusieurs spécimens ont été révisées; c) l'effet de la masse volumique de l'air a été ajouté; d) une recommandation concernant les actions correctives relatives aux rayonnements IR a été ajoutée; e) les exigences relatives au montage et aux supports des spécimens ont été révisées.
Okoljsko preskušanje - 3-1. del: Podporna dokumentacija in navodila - Preskus z mrazom in suho vročino (IEC 60068-3-1:2023)
Ta del standarda IEC 60068 podaja smernice v zvezi z izvedbo preskusov z mrazom in suho vročino.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2024
Nadomešča:
SIST EN 60068-3-1:2012
Okoljsko preskušanje - 3-1. del: Podporna dokumentacija in navodila - Preskus z
mrazom in suho vročino (IEC 60068-3-1:2023)
Environmental testing - Part 3-1: Supporting documentation and guidance - Cold and dry
heat tests (IEC 60068-3-1:2023)
Umgebungseinflüsse - Teil 3-1: Unterstützende Dokumentation und Leitfaden -
Prüfverfahren Kälte und Trockene Wärme (IEC 60068-3-1:2023)
Essais d'environnement - Partie 3-1: Documentation d'accompagnement et
recommandations - Essais de froid et de chaleur sèche (IEC 60068-3-1:2023)
Ta slovenski standard je istoveten z: EN IEC 60068-3-1:2023
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60068-3-1
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2023
ICS 19.040 Supersedes EN 60068-3-1:2011
English Version
Environmental testing - Part 3-1: Supporting documentation and
guidance - Cold and dry heat tests
(IEC 60068-3-1:2023)
Essais d'environnement - Partie 3-1: Documentation Umgebungseinflüsse - Teil 3-1: Unterstützende
d'accompagnement et recommandations - Essais de froid Dokumentation und Leitfaden - Prüfungen Kälte und
et de chaleur sèche Trockene Wärme
(IEC 60068-3-1:2023) (IEC 60068-3-1:2023)
This European Standard was approved by CENELEC on 2023-08-03. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
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Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
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CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60068-3-1:2023 E
European foreword
The text of document 104/986/FDIS, future edition 3 of IEC 60068-3-1, prepared by IEC/TC 104
"Environmental conditions, classification and methods of test" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 60068-3-1:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-05-03
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-08-03
document have to be withdrawn
This document supersedes EN 60068-3-1:2011 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60068-3-1:2023 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60068-1:2013 NOTE Approved as EN 60068-1:2014 (not modified)
IEC 60068-2-1 NOTE Approved as EN 60068-2-1
IEC 60068-2-2 NOTE Approved as EN 60068-2-2
IEC 60068-2-14 NOTE Approved as EN 60068-2-14
IEC 60068-3-11 NOTE Approved as EN 60068-3-11
IEC 60068-3-1 ®
Edition 3.0 2023-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 3-1: Supporting documentation and guidance – Cold and dry heat tests
Essais d'environnement –
Partie 3-1: Documentation d'accompagnement et recommandations – Essais de
froid et de chaleur sèche
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.040 ISBN 978-2-8322-7134-6
– 2 – IEC 60068-3-1:2023 © IEC 2023
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Selection of test procedures . 6
4.1 General background . 6
4.1.1 General . 6
4.1.2 Ambient temperature . 6
4.1.3 Specimen temperatures . 6
4.1.4 Non heat-dissipating specimens . 6
4.1.5 Heat-dissipating specimens . 6
4.2 Mechanisms of heat transfer . 7
4.2.1 Convection . 7
4.2.2 Radiation . 10
4.2.3 Thermal conduction . 11
4.2.4 Forced air circulation . 11
4.3 Test chambers . 11
4.3.1 General . 11
4.3.2 Methods of achieving the required conditions in the test chamber . 12
4.4 Measurements . 12
4.4.1 Temperature . 12
4.4.2 Air velocity . 12
Annex A (informative) Effect of airflow on chamber conditions and on surface
temperatures of test specimens . 13
A.1 Calculation . 13
A.2 Specimen temperature . 13
A.3 Gradient between incoming and outgoing air . 13
Bibliography . 15
Figure 1 – Experimental data on the effect of airflow on the surface temperature of a
wire-wound resistor – Radial airflow . 8
Figure 2 – Experimental data on the effect of airflow on the surface temperature of a
wire-wound resistor – Axial airflow . 9
Figure 3 – Temperature distribution on a cylinder with homogeneous heat generation in
−1
airflow of velocities (0,5, 1 and 2) m · s . 10
Table 1 – Influence parameters when testing heat-dissipating specimens . 12
IEC 60068-3-1:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 3-1: Supporting documentation and guidance –
Cold and dry heat tests
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication can be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 60068-3-1 has been prepared by IEC technical committee 104: Environmental conditions,
classification and methods of test. It is an International Standard.
This third edition cancels and replaces the second edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) information relating to specimen temperatures has been revised;
b) information relating to tests of multiple specimens has been revised;
c) the effect of air density has been added;
d) a recommendation for corrective actions regarding IR radiation has been added;
e) the requirements for the mounting and supports of the specimen have been revised.
– 4 – IEC 60068-3-1:2023 © IEC 2023
The text of this International Standard is based on the following documents:
Draft Report on voting
104/986/FDIS 104/1002/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Suppl
...
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