IEC 60216-1:2013

Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results

IEC 60216-1:2013 specifies the general ageing conditions and procedures to be used for deriving thermal endurance characteristics and gives guidance in using the detailed instructions and guidelines in the other parts of the standard. Although originally developed for use with electrical insulating materials and simple combinations of such materials, the procedures are considered to be of more general applicability and are widely used in the assessment of materials not intended for use as electrical insulation. In the application of this standard, it is assumed that a practically linear relationship exists between the logarithm of the time required to cause the predetermined property change and the reciprocal of the corresponding absolute temperature (Arrhenius relationship). For the valid application of the standard, no transition, in particular no first-order transition should occur in the temperature range under study. This sixth edition cancels and replaces the fifth edition, published in 2001. It constitutes an editorial revision where the simplified method has been removed and now forms Part 8 of the IEC 60216 series: Instructions for calculating thermal endurance characteristics using simplified procedures.

Matériaux isolants électriques - Propriétés d'endurance thermique - Partie 1: Méthodes de vieillissement et évaluation des résultats d'essai

La CEI 60216-1:2013 spécifie les conditions générales de vieillissement et les méthodes à utiliser pour en extraire les caractéristiques d'endurance thermique, et fixe des orientations pour l'utilisation des instructions détaillées et des directives précisées dans les autres parties de la norme. Même si à l'origine elles ont été développées pour être utilisées sur les matériaux isolants électriques et des combinaisons simples de tels matériaux, ces méthodes sont considérées comme étant applicables plus généralement et sont largement utilisées pour vérifier des matériaux non destinés à être utilisés comme isolants électriques. Dans l'application de cette norme, on suppose qu'une relation pratiquement linéaire existe entre le logarithme du temps nécessaire pour provoquer la modification prédéterminée de la propriété, et l'inverse de la température absolue correspondante (relation d'Arrhenius). Pour que la norme soit valable, il convient qu'il n'y ait pas de transition, en particulier de transition du premier ordre, dans la gamme de températures à l'étude. Cette sixième édition annule et remplace la cinquième édition, parue en 2001. Cette édition constitue une révision éditoriale de laquelle à été retirée la méthode simplifiée qui constitue maintenant la Partie 8 de la CEI 60216: Instructions pour le calcul des caractéristiques d'endurance thermique en utilisant les méthodes simplifiées.

General Information

• Status: Published
• Publication Date: 14-Mar-2013
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.220.99 - Other standards related to electricity and magnetism
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: TC 112 - Evaluation and qualification of electrical insulating materials and systems
• Drafting Committee: WG 1 - TC 112/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 31-Mar-2013
• Completion Date: 15-Mar-2013

Relations

• Revises: IEC 60216-1:2001 - Electrical insulating materials - Properties of thermal endurance - Part 1: Ageing procedures and evaluation of test results
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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

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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
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 17.220.99; 29.035.01 ISBN 978-2-83220-680-5

– 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

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

– 4 – 60216-1 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSULATING MATERIALS –
THERMAL ENDURANCE PROPERTIES –

Part 1: Ageing procedures and evaluation of test results

FOREWORD
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all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
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