prEN IEC 60216-1:2024
(Main)Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results
Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results
Elektroisolierstoffe - Eigenschaften hinsichtlich des thermischen Langzeitverhaltens - Teil 1: Warmlagerungsverfahren und Auswertung von Prüfergebnissen
Matériaux isolants électriques - Propriétés d'endurance thermique - Partie 1: Méthodes de vieillissement et évaluation des résultats d'essai
Električni izolacijski materiali - Lastnosti toplotne vzdržljivosti - 1. del: Postopki staranja in vrednotenje rezultatov preskušanja
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2024
Električni izolacijski materiali - Lastnosti toplotne vzdržljivosti - 1. del: Postopki
staranja in vrednotenje rezultatov preskušanja
Electrical insulating materials - Thermal endurance properties - Part 1: Ageing
procedures and evaluation of test results
Elektroisolierstoffe - Eigenschaften hinsichtlich des thermischen Langzeitverhaltens - Teil
1: Warmlagerungsverfahren und Auswertung von Prüfergebnissen
Matériaux isolants électriques - Propriétés d'endurance thermique - Partie 1: Méthodes
de vieillissement et évaluation des résultats d'essai
Ta slovenski standard je istoveten z: prEN IEC 60216-1:2024
ICS:
17.220.99 Drugi standardi v zvezi z Other standards related to
elektriko in magnetizmom electricity and magnetism
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.
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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. 12
5.1 Selection of test procedures. 12
5.1.1 General considerations . 12
5.1.2 Selection of material. 12
5.1.3 Selection of test properties for TI . 12
5.1.4 Determination of TI for times other than 20 000 h. 12
5.2 Selection of end-points. 13
5.3 Preparation and number of test specimens . 13
5.3.1 Preparation. 13
5.3.2 Number of specimens . 14
5.4 Establishment of initial property value. 15
5.5 Exposure temperatures and times . 15
5.6 Ageing ovens. 16
5.7 Environmental conditions . 16
5.7.1 General. 16
5.7.2 Atmospheric conditions during ageing . 16
5.7.3 Conditions for property measurement. 16
5.8 Procedure for ageing. 16
5.8.1 General. 16
5.8.2 Procedure using a non-destructive test. 17
5.8.3 Procedure using a proof test . 17
5.8.4 Procedure using a destructive test. 18
6 Evaluation. 19
6.1 Numerical analysis of test data . 19
6.2 Thermal endurance characteristics and formats . 19
6.3 Times to end-point, x- and y-values . 20
6.3.1 General. 20
6.3.2 Non-destructive tests. 20
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6.3.3 Proof tests . 21
6.3.4 Destructive tests. 21
6.4 Means and variances . 24
6.4.1 Complete data . 24
6.4.2 Incomplete (censored) data. 25
6.5 General means and variances and regression analysis . 25
6.6 Thickness dependance . 25
6.7 Statistical tests and data requirements . 25
6.7.1 General. 25
6.7.2 Data of all types. 25
6.7.3 Proof tests . 27
6.7.4 Destructive tests. 27
6.8 Thermal endurance graph and thermal endurance characteristics. 27
6.9 Test report . 27
Annex A Dispersion and non-linearity(informative) . 30
A.1 Data dispersion . 30
A.2 Non-linearity. 30
A.2.1 Mechanisms of thermal degradation. 30
A.2.2 Non-linearity of data groups. 31
Annex B Exposure temperatures and times(informative). 32
B.1 General . 32
B.2 Temperatures . 32
B.3 Times . 32
B.3.1 Cyclic ageing. 32
B.3.2 Continuous ageing. 33
B.4 Delayed groups of specimens. 33
Bibliography. 35
Figure 1 - Thermal endurance graph. 19
Figure 2
- Property variation - Determination of time to end-point at each temperature (destructive and
non-destructive tests)
................................................................................................................................................. 21
Figure 3
- Estimation of times to end-point - Property value (ordinate, arbitrary units) versus time
(abscissa, log scale, arbitrary units)
................................................................................................................................................. 23
Figure 4 - Destructive tests - Estimation of time to end-point . 23
Table 1 - Suggested exposure temperatures and times. 29
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Table B.1 - Groups . 34
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSULATING MATERIALS - THERMAL ENDURANCE
PROPERTIES - PART 1: AGEING PROCEDURES AND EVALUATION OF
TEST RESULTS –
FOREWORD
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IEC 60216-1 has been prepared by IEC technical committee 112: Evaluation and qualification
of electrical insulating materials and systems. It is an International Standard.
This seventh edition cancels and replaces the sixth edition published in 2013. This edition
constitutes a technical revision.
This edition includes the following significant technical changes wit
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