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SLOVENSKI STANDARD
01-julij-2021
Nadomešča:
SIST EN 60216-3:2006
Elektroizolacijski materiali - Lastnosti toplotne vzdržljivosti - 3. del: Navodila za
izračunavanje karakteristik toplotne vzdržljivosti (IEC 60216-3:2021)
Electrical insulating materials - Thermal endurance properties - Part 3: Instructions for
calculating thermal endurance characteristics (IEC 60216-3:2021)
Elektroisolierstoffe – Eigenschaften hinsichtlich des thermischen Langzeitverhaltens –
Teil 3: Anweisungen zur Berechnung thermischer Langzeitkennwerte (IEC 60216-3:2021)
Matériaux isolants électriques - Propriétés d’endurance thermique - Partie 3: Instructions
pour le calcul des caractéristiques d’endurance thermique (IEC 60216-3:2021)
Ta slovenski standard je istoveten z: EN IEC 60216-3:2021
ICS:
29.035.01 Izolacijski materiali na Insulating materials in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60216-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 17.220.99; 19.020 Supersedes EN 60216-3:2006 and all of its amendments
and corrigenda (if any)
English Version
Electrical insulating materials - Thermal endurance properties -
Part 3: Instructions for calculating thermal endurance
characteristics
(IEC 60216-3:2021)
Matériaux isolants électriques - Propriétés d'endurance Elektroisolierstoffe - Eigenschaften hinsichtlich des
thermique - Partie 3: Instructions pour le calcul des thermischen Langzeitverhaltens - Teil 3: Anweisungen zur
caractéristiques d'endurance thermique Berechnung thermischer Langzeitkennwerte
(IEC 60216-3:2021) (IEC 60216-3:2021)
This European Standard was approved by CENELEC on 2021-04-20. 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,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60216-3:2021 E
European foreword
The text of document 112/475/CDV, future edition 3 of IEC 60216-3, prepared by IEC/TC 112
"Evaluation and qualification of electrical insulating materials and systems" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 60216-3:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-01-20
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-04-20
document have to be withdrawn
This document supersedes EN 60216-3:2006 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.
Endorsement notice
The text of the International Standard IEC 60216-3:2021 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 standards
indicated:
IEC 60216-2 NOTE Harmonized as EN 60216-2
IEC 60216-5 NOTE Harmonized as EN 60216-5
IEC 60216-6 NOTE Harmonized as EN 60216-6
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60216-1 2013 Electrical insulating materials - Thermal EN 60216-1 2013
endurance properties - Part 1: Ageing
procedures and evaluation of test results
IEC 60216-3
Edition 3.0 2021-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electrical insulating materials – Thermal endurance properties –
Part 3: Instructions for calculating thermal endurance characteristics
Matériaux isolants électriques – Propriétés d'endurance thermique –
Partie 3: Instructions pour le calcul des caractéristiques d'endurance thermique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.99; 19.020 ISBN 978-2-8322-9440-6
– 2 – IEC 60216-3:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, symbols and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Symbols and abbreviated terms . 8
4 Principles of calculations . 10
4.1 General principles . 10
4.2 Preliminary calculations . 10
4.2.1 General . 10
4.2.2 Non-destructive tests . 11
4.2.3 Proof tests . 11
4.2.4 Destructive tests . 11
4.3 Variance calculations . 12
4.4 Statistical tests . 12
4.5 Results . 13
5 Requirements and recommendations for valid calculations . 13
5.1 Requirements for experimental data . 13
5.1.1 General . 13
5.1.2 Non-destructive tests . 13
5.1.3 Proof tests . 13
5.1.4 Destructive tests . 13
5.2 Precision of calculations . 14
6 Calculation procedures . 14
6.1 Preliminary calculations . 14
6.1.1 Temperatures and x-values . 14
6.1.2 Non-destructive tests . 14
6.1.3 Proof tests . 14
6.1.4 Destructive tests . 14
6.1.5 Incomplete data . 18
6.2 Main calculations . 18
6.2.1 Calculation of group means and variances . 18
6.2.2 General means and variances . 19
6.2.3 Regression calculations . 20
6.3 Statistical tests . 21
6.3.1 Variance equality test . 21
6.3.2 Linearity test (F-test) . 21
6.3.3 Confidence limits of X and Y estimates . 22
6.4 Thermal endurance graph . 23
7 Calculation and requirements for results . 23
7.1 Calculation of thermal endurance characteristics . 23
7.2 Summary of statistical tests and reporting . 24
7.3 Reporting of results . 24
8 Test report . 24
Annex A (normative) Decision flow chart . 26
IEC 60216-3:2021 © IEC 2021 – 3 –
Annex B (normative) Decision table . 27
Annex C (informative) Statistical tables . 28
Annex D (informative) Worked examples. 38
Annex E (informative) Computer program . 46
E.1 General . 46
E.1.1 Overview . 46
E.1.2 Convenience program execution . 47
E.2 Structure of data files used by the program . 48
E.2.1 Text file formats . 48
E.2.2 Office Open XML formats. 50
E.3 Data files for computer program . 51
E.4 Output files and graph . 56
Bibliography . 57
Figure 1 – Example of groups selection . 15
Figure A.1 – Decision flow chart . 26
Figure D.1 – Thermal endurance graph . 42
Figure D.2 – Example 3: Property-time graph. 44
Figure E.1 – Shortcut property dialog for program launch . 47
Figure E.2 – Thermal endurance graph of example N3 .
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