IEC 60216-1
Edition 6.0 2013-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical insulating materials – Thermal endurance properties –
Part 1: Ageing procedures and evaluation of test results
Matériaux isolants électriques – Propriétés d'endurance thermique –
Partie 1: Méthodes de vieillissement et évaluation des résultats d'essai
IEC 60216-1:2013
®
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Copyright International Electrotechnical Commission
Provided by IHS under license with IEC
No reproduction or networking permitted without license from IHS
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IEC 60216-1
Edition 6.0 2013-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical insulating materials – Thermal endurance properties –
Part 1: Ageing procedures and evaluation of test results
Matériaux isolants électriques – Propriétés d'endurance thermique –
Partie 1: Méthodes de vieillissement et évaluation des résultats d'essai
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
V
ICS 17.220.99; 29.035.01
PRICE CODE
CODE PRIX
ISBN 978-2-83220-680-5
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
®
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 agréé.
Copyright International Electrotechnical Commission
Provided by IHS under license with IEC
No reproduction or networking permitted without license from IHS
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– 2 – 60216-1 © IEC:2013
CONTENTS
FOREWORD ........................................................................................................................... 4
INTRODUCTION ..................................................................................................................... 6
1 Scope ............................................................................................................................... 7
2 Normative references ....................................................................................................... 7
3 Terms, definitions, symbols and abbreviations .................................................................. 8
3.1 Terms and definitions .............................................................................................. 8
3.2 Symbols and abbreviations .................................................................................... 10
4 Synopsis of procedures – Full procedures ...................................................................... 11
5 Detailed experimental procedures .................................................................................. 11
5.1 Selection of test procedures .................................................................................. 11
5.1.1 General considerations .............................................................................. 11
5.1.2 Selection of test properties for TI ............................................................... 11
5.1.3 Determination of TI for times other than 20 000 h ...................................... 12
5.2 Selection of end-points .......................................................................................... 12
5.3 Preparation and number of test specimens ............................................................ 12
5.3.1 Preparation ................................................................................................ 12
5.3.2 Number of specimens ................................................................................ 13
5.4 Establishment of initial property value ................................................................... 14
5.5 Exposure temperatures and times ......................................................................... 14
5.6 Ageing ovens ........................................................................................................ 14
5.7 Environmental conditions ...................................................................................... 15
5.7.1 General ..................................................................................................... 15
5.7.2 Atmospheric conditions during ageing ....................................................... 15
5.7.3 Conditions for property measurement ........................................................ 15
5.8 Procedure for ageing ............................................................................................. 15
5.8.1 General ..................................................................................................... 15
5.8.2 Procedure using a non-destructive test ...................................................... 15
5.8.3 Procedure using a proof test ...................................................................... 16
5.8.4 Procedure using a destructive test ............................................................. 16
6 Evaluation ...................................................................................................................... 16
6.1 Numerical analysis of test data .............................................................................. 16
6.2 Thermal endurance characteristics and formats ..................................................... 17
6.3 Times to end-point, x- and y-values ....................................................................... 18
6.3.1 General ..................................................................................................... 18
6.3.2 Non-destructive tests ................................................................................. 18
6.3.3 Proof tests ................................................................................................. 19
6.3.4 Destructive tests ........................................................................................ 19
6.4 Means and variances ............................................................................................ 21
6.4.1 Complete data ........................................................................................... 21
6.4.2 Incomplete (censored) data ....................................................................... 22
6.5 General means and variances and regression analysis.......................................... 22
6.6 Statistical tests and data requirements .................................................................. 22
6.6.1 General ..................................................................................................... 22
6.6.2 Data of all types ........................................................................................ 22
6.6.3 Proof tests ................................................................................................. 23
6.6.4 Destructive tests ........................................................................................ 23
Copyright International Electrotechnical Commission
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60216-1 © IEC:2013 – 3 –
6.7
Thermal endurance graph and thermal endurance characteristics ......................... 24
6.8 Test report ............................................................................................................ 24
Annex A (informative) Dispersion and non-linearity .............................................................. 26
Annex B (informative) Exposure temperatures and times ..................................................... 28
Annex C (informative) Concepts in earlier editions ............................................................... 31
Bibliography .......................................................................................................................... 33
Figure 1 – Thermal endurance graph .................................................................................... 17
Figure 2 – Property variation – Determination of time to end-point at each temperature
(destructive and non-destructive tests) ................................................................................. 19
Figure 3 – Estimation of times to end-point – Property value (ordinate, arbitrary units)
versus time (abscissa, log scale, arbitrary units) ................................................................... 20
Figure 4 – Destructive tests – Estimation of time to end-point ............................................... 21
Figure C.1 – Relative temperature index (Adapted from Figure 3, IEC 60216-1:1990,
4th edition) ........................................................................................................................... 32
Table 1 – Suggested exposure temperatures and times ........................................................ 25
Table B.1 – Groups ............................................................................................................... 29
Copyright International Electrotechnical Commission
Provided by IHS under license with IEC
No reproduction or networking permitted without license from IHS
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