《BS-EN-60216-3-2006.pdf》由会员分享，可在线阅读，更多相关《BS-EN-60216-3-2006.pdf（54页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 60216-3:2006 Electrical insulating materials Thermal endurance properties Part 3: Instructions for calculating thermal endurance characteristics The European Standard EN 60216-3:2006 has the status of a British Standard ICS 17.220.99; 19.020; 29.035.01 ? Licensed Copy: sheffie
2、ldun sheffieldun, na, Thu Nov 09 05:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60216-3:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2006 BSI 2006 ISBN 0 580 49090 4 National foreword This British Standard is the
3、official English language version of EN 60216-3:2006. It is identical with IEC 60216-3:2006. It supersedes BS EN 60216-3:2002 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee GEL/112, Evaluation and qualification of electrical insulating materials and
4、systems, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue un
5、der the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct ap
6、plication. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; mon
7、itor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 50, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates wh
8、en the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 05:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 60216-3 NORME EUROPENNE EUROPISCHE NORM July 2006 CENELEC European Committee for
9、Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
10、Ref. No. EN 60216-3:2006 E ICS 17.220.99; 19.020; 29.035.01 Supersedes EN 60216-3:2002 English version Electrical insulating materials - Thermal endurance properties Part 3: Instructions for calculating thermal endurance characteristics (IEC 60216-3:2006) Matriaux isolants lectriques - Proprits dend
11、urance thermique Partie 3: Instructions pour le calcul des caractristiques dendurance thermique (CEI 60216-3:2006) Elektroisolierstoffe Eigenschaften hinsichtlich des thermischen Langzeitverhaltens Teil 3: Anweisungen zur Berechnung thermischer Langzeitkennwerte (IEC 60216-3:2006) This European Stan
12、dard was approved by CENELEC on 2006-06-01. 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 concern
13、ing such national standards may be obtained on application to the Central Secretariat 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 it
14、s own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
15、via, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 05:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of document 112/2
16、6/FDIS, future edition 2 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 was approved by CENELEC as EN 60216-3 on 2006-06-01. This European Standard supersedes EN 60216-3:2002. The
17、 major technical changes with regard to EN 60216-3:2002 concern an updating of Table C.2. In addition, the scope has been extended to cover a greater range of data characteristics, particularly with regard to incomplete data, as often obtained from proof test criteria. The greater flexibility of use
18、 should lead to more efficient employment of the time available for ageing purposes. Finally, the procedures specified in this part of EN 60216 have been extensively tested and have been used to calculate results from a large body of experimental data obtained in accordance with other parts of the s
19、tandard. Annex E Computer program has been completely reworked. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-03-01 latest date by which the national standards conflict
20、ing with the EN have to be withdrawn (dow) 2009-06-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60216-3:2006 was approved by CENELEC as a European Standard without any modification. _ EN 60216-3:2006 2 Licensed Copy: sheffieldun sheffieldun,
21、na, Thu Nov 09 05:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 EN 60216-3:2006 CONTENTS 1 Scope 5 2 Normative references .5 3 Terms, definitions, symbols and abbreviated terms5 4 Principles of calculations 9 4.1 General principles .9 4.2 Preliminary calculations.9 4.3 Variance calculations.10
22、4.4 Statistical tests11 4.5 Results11 5 Requirements and recommendations for valid calculations 12 5.1 Requirements for experimental data.12 5.2 Precision of calculations 12 6 Calculation procedures .12 6.1 Preliminary calculations.12 6.2 Main calculations.16 6.3 Statistical tests18 6.4 Thermal endu
23、rance graph20 7 Calculation and requirements for results .20 7.1 Calculation of thermal endurance characteristics20 7.2 Summary of statistical tests and reporting 21 7.3 Reporting of results .21 8 Test report .21 Annex A (normative) Decision flow chart .23 Annex B (normative) Decision table.24 Annex
24、 C (informative) Statistical tables .25 Annex D (informative) Worked examples .34 Annex E (informative) Computer program41 Annex ZA (normative) Normative references to international publications with their corresponding European publications50 Bibliography .49 Figure D.1 Thermal endurance graph .38
25、Figure D.2 Example 3: Property-time graph (destructive test data) 40 Table B.1 Decisions and actions according to tests.24 Table C.1 Coefficients for censored data calculations .25 Table C.2 Fractiles of the F-distribution, F(0,95 ,fn,fd).31 Table C.3 Fractiles of the F-distribution, F(0,995 ,fn,fd)
26、 32 Table C.4 Fractiles of the t-distribution, t0,9533 Table C.5 Fractiles of the 2-distribution 33 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 05:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60216-3:2006 4 Table D.1 Worked example 1 Censored data (proof tests)34 Table D.2 Worked e
27、xample 2 Complete data (non-destructive tests) 36 Table D.3 Worked example 3 Destructive tests 39 Table E.1 Non-destructive test data42 Table E.2 Destructive test data 43 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 05:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 EN 60216-3:2006 ELEC
28、TRICAL INSULATING MATERIALS THERMAL ENDURANCE PROPERTIES Part 3: Instructions for calculating thermal endurance characteristics 1 Scope This part of IEC 60216 specifies the calculation procedures to be used for deriving thermal endurance characteristics from experimental data obtained in accordance
29、with the instructions of IEC 60216-1 and IEC 60216-2, using fixed ageing temperatures and variable ageing times. The experimental data may be obtained using non-destructive, destructive or proof tests. Data obtained from non-destructive or proof tests may be incomplete, in that measurement of times
30、taken to reach the endpoint may have been terminated at some point after the median time but before all specimens have reached end-point. The procedures are illustrated by worked examples, and suitable computer programs are recommended to facilitate the calculations. 2 Normative references The follo
31、wing referenced documents are indispensable for the application 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. IEC 60216-1:2001, Electrical insulating materials Properti
32、es of thermal endurance Part 1: Ageing procedures and evaluation of test results IEC 60216-2:2005, Electrical insulating materials Properties of thermal endurance Part 2: Determination of thermal endurance properties of electrical insulating materials Choice of test criteria IEC 60493-1:1974, Guide
33、for the statistical analysis of ageing test data Part 1: Methods based on mean values of normally distributed test results 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the following definitions apply. 3.1.1 ordered data group of dat
34、a arranged in sequence so that in the appropriate direction through the sequence each member is greater than, or equal to, its predecessor NOTE 1 In this standard, ascending order implies that the data is ordered in this way, the first being the smallest. NOTE 2 It has been established that the term
35、 “group” is used in the theoretical statistics literature to represent a subset of the whole data set. The group comprises those data having the same value of one of the parameters of the set (e.g. ageing temperature). A group may itself comprise a number of sub-groups characterised by another param
36、eter (e.g. time in the case of destructive tests). Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 05:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60216-3:2006 6 3.1.2 order-statistic each individual value in a group of ordered data is referred to as an order-statistic identified by it
37、s numerical position in the sequence 3.1.3 incomplete data ordered data, where the values above and/or below defined points are not known 3.1.4 censored data incomplete data, where the number of unknown values is known. NOTE 1 If the censoring is begun above/below a specified numerical value, the ce
38、nsoring is Type I. If above/below a specified order-statistic it is Type II This standard is concerned only with Type II. 3.1.5 degrees of freedom number of data values minus the number of parameter values 3.1.6 variance of a data group sum of the squares of the deviations of the data from a referen
39、ce level. NOTE 1 The reference level may be defined by one or more parameters, for example a mean value (one parameter) or a line (two parameters, slope and intercept), divided by the number of degrees of freedom 3.1.7 central second moment of a data group sum of the squares of the differences betwe
40、en the data values and the value of the group mean, divided by the number of data in the group 3.1.8 covariance of data groups for two groups of data with equal numbers of elements where each element in one group corresponds to one in the other, the sum of the products of the deviations of the corre
41、sponding members from their group means, divided by the number of degrees of freedom 3.1.9 regression analysis process of deducing the best-fit line expressing the relation of corresponding members of two data groups by minimizing the sum of squares of deviations of members of one of the groups from
42、 the line NOTE The parameters are referred to as the regression coefficients. 3.1.10 correlation coefficient number expressing the completeness of the relation between members of two data groups, equal to the covariance divided by the square root of the product of the variances of the groups NOTE Th
43、e value of its square is between 0 (no correlation) and 1 (complete correlation). 3.1.11 end-point line line parallel to the time axis intercepting the property axis at the end-point value Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 05:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7 EN
44、 60216-3:2006 3.2 Symbols and abbreviated terms Subclause a Regression coefficient (y-intercept) 4.3, 6.2 ap Regression coefficient for destructive test calculations 6.1 b Regression coefficient (slope) 4.3, 6.2 bp Regression coefficient for destructive test calculations 6.1 br Intermediate constant
45、 (calculation of c X ) 6.3 c Intermediate constant (calculation of 2) 6.3 f Number of degrees of freedom Tables C.2 to C5 F Fisher distributed stochastic variable 4.2, 6.1, 6.3 F0 Tabulated value of F (linearity of thermal endurance graph) 4.4, 6.3 F1 Tabulated value of F (linearity of property grap
46、h significance 0,05) 6.1 F2 Tabulated value of F (linearity of property graph significance 0,005) 6.1 g Order number of ageing time for destructive tests 6.1 h Order number of property value for destructive tests 6.1 HIC Halving interval at temperature equal to TI 4.3, 7 HICg Halving interval corres
47、ponding to TIg 7.3 i Order number of exposure temperature 4.1, 6.2 j Order number of time to end-point 4.1, 6.2 k Number of ageing temperatures 4.1, 6.2 mi Number of specimens aged at temperature i 4.1, 6.1 N Total number of times to end-point 6.2 ng Number of property values in group aged for time
48、g 6.1 ni Number of values of y at temperature i 4.1, 6.1 p Mean value of property values in selected groups 6.1 p Value of diagnostic property 6.1 P Significance level of 2 distribution 4.4, 6.3.1 pe Value of diagnostic property at end-point for destructive tests 6.1 g p Mean of property values in g
49、roup aged for time g 6.1 pgh Individual property value 6.1 q Base of logarithms 6.3 r Number of ageing times selected for inclusion in calculation (destructive tests) 6.1 r2 Square of correlation coefficient 6.2.3 s2 Weighted mean of 2 1 s and 2 2 s 6.3 2 1 s Weighted mean of 2 1i s, pooled variance within selected groups 4.3, 6.1 - 6.3 ( )as2 1 Adjusted value of 2 1 s 4.4,