1、 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 Matriaux isolants lectriques Proprits dendurance thermique Partie 1: Mthodes de vieillissement et valuati
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16、on 6.0 2013-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical insulating materials Thermal endurance properties Part 1: Ageing procedures and evaluation of test results Matriaux isolants lectriques Proprits dendurance thermique Partie 1: Mthodes de vieillissement et valuation des rsultats de
17、ssai 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 dpose de la Commission Electrotechnique Internationale Warning
18、! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60216-1 IEC:2013 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms, definitions, symbo
19、ls 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
20、 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 con
21、ditions 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 .
22、 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 Comple
23、te 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
24、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
25、 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
26、 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 ENDURANC
27、E PROPERTIES Part 1: Ageing procedures and evaluation of test results FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote interna
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37、application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60216-1 has been prepared by IE
38、C technical committee 112: Evaluation and qualification of electrical insulating materials and systems. 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 6021
39、6 series: Instructions for calculating thermal endurance characteristics using simplified procedures. The text of this standard is based on the following documents: FDIS Report on voting 112/235/FDIS 112/243/RVD Full information on the voting for the approval of this standard can be found in the rep
40、ort on voting indicated in the above table. 60216-1 IEC:2013 5 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 60216 series, published under the general title Electrical insulating materials Thermal endurance properties, can be foun
41、d on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdra
42、wn, replaced by a revised edition, or amended. 6 60216-1 IEC:2013 INTRODUCTION The listing of the thermal capabilities of electrical insulating materials, based on service experience, was found to be impractical, owing to the rapid development of polymer and insulation technologies and the long time
43、 necessary to acquire appropriate service experience. Accelerated ageing and test procedures were therefore required to obtain the necessary information. The IEC 60216 series has been developed to formalize these procedures and the interpretation of their results. Physico-chemical models postulated
44、for the ageing processes led to the almost universal assumption of the Arrhenius equations to describe the rate of ageing. Out of this arose the concept of the temperature index (TI) as a single-point characteristic based upon accelerated ageing data. This is the numerical value of the temperature i
45、n C at which the time taken for deterioration of a selected property to reach an accepted end-point is that specified (usually 20 000 h). NOTE The term Arrhenius is widely used (and understood) to indicate a linear relationship between the logarithm of a time and the reciprocal of the thermodynamic
46、(absolute or Kelvin) temperature. The correct usage is restricted to such a relationship between a reaction rate constant and the thermodynamic temperature. The common usage is employed throughout this standard. The large statistical scatter of test data which was found, together with the frequent o
47、ccurrence of substantial deviations from the ideal behavior, demonstrated the need for tests to assess the validity of the basic physico-chemical model. The application of conventional statistical tests, as set out in IEC 60493-1, fulfilled this requirement, resulting in the “confidence limit“, (TC)
48、 of TI, but the simple, single-point TI was found inadequate to describe the capabilities of materials. This led to the concept of the “Thermal Endurance Profile“ (TEP), incorporating the temperature index, its variation with specified ageing time, and a confidence limit. A complicating factor is th
49、at the properties of a material subjected to thermal ageing may not all deteriorate at the same rate, and different end-points may be relevant for different applications. Consequently, a material may be assigned more than one temperature index, derived, for example, from the measurement of different properties and the use of different end-point times. It was subsequently found that the statistical confidence
