EN 61810-2-2017 en Electromechanical elementary relays - Part 2 Reliability.pdf

1、Electromechanical elementary relaysPart 2: Reliability (IEC 61810-2:2017)BS EN 61810-2:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61810-2 October 2017 ICS 29.120.70 Supersedes EN 61810-2:2011 English Versi

2、on Electromechanical elementary relays - Part 2: Reliability (IEC 61810-2:2017) Relais lectromcaniques lmentaires - Partie 2: Fiabilit (IEC 61810-2:2017) Elektromechanische Elementarrelais - Teil 2: Funktionsfhigkeit (Zuverlssigkeit) (IEC 61810-2:2017) This European Standard was approved by CENELEC

3、on 2017-07-04. 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 concerning such national standards m

4、ay be obtained on application to the CEN-CENELEC Management Centre 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 its own language and

5、notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germa

6、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Norm

7、alisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 61810-2:2017 E National forewordThis B

8、ritish Standard is the UK implementation of EN 61810-2:2017. It is identical to IEC 61810-2:2017. It supersedes BS EN 61810-2:2011, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EPL/94, General purpose relays and reed contact units.A list of organiza

9、tions represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017IS

10、BN 978 0 580 87822 0ICS 29.120.70Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2017.Amendments/corrigenda issued since publicationDate Text affected

11、BRITISH STANDARDBS EN 618102:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61810-2 October 2017 ICS 29.120.70 Supersedes EN 61810-2:2011 English Version Electromechanical elementary relays - Part 2: Reliability (IEC 61810-2:2017) Relais lectromcaniques lmentaires - Partie 2: Fiabilit (IEC

12、 61810-2:2017) Elektromechanische Elementarrelais - Teil 2: Funktionsfhigkeit (Zuverlssigkeit) (IEC 61810-2:2017) This European Standard was approved by CENELEC on 2017-07-04. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

13、 European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three officia

14、l versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnic

15、al committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Ser

16、bia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussel

17、s 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 61810-2:2017 E BS EN 618102:2017EN 61810-2:2017 2 European foreword The text of document 94/415/FDIS, future edition 3 of IEC 61810-2, prepared by IEC/TC 94 “All-ornothing elect

18、rical relays“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61810-2:2017. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2018-04-06 latest

19、 date by which the national standards conflicting with the document have to be withdrawn (dow) 2020-10-06 This document supersedes EN 61810-2:2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsi

20、ble for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61810-2:2017 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards ind

21、icated: IEC 61810-2-1 NOTE Harmonized as EN 61810-2-1. IEC 61810-3 NOTE Harmonized as EN 61810-3. IEC 62061 NOTE Harmonized as EN 62061. ISO 13849-1:2015 NOTE Harmonized as EN ISO 13849-1:2015 (not modified). BS EN 618102:2017EN 61810-2:2017 2 European foreword The text of document 94/415/FDIS, futu

22、re edition 3 of IEC 61810-2, prepared by IEC/TC 94 “All-ornothing electrical relays“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61810-2:2017. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of a

23、n identical national standard or by endorsement (dop) 2018-04-06 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2020-10-06 This document supersedes EN 61810-2:2011. Attention is drawn to the possibility that some of the elements of this document

24、may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61810-2:2017 was approved by CENELEC as a European Standard without any modification. In the official version, for B

25、ibliography, the following notes have to be added for the standards indicated: IEC 61810-2-1 NOTE Harmonized as EN 61810-2-1. IEC 61810-3 NOTE Harmonized as EN 61810-3. IEC 62061 NOTE Harmonized as EN 62061. ISO 13849-1:2015 NOTE Harmonized as EN ISO 13849-1:2015 (not modified). EN 61810-2:2017 3 An

26、nex ZA (normative) Normative references to international publications with their corresponding European publications The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition c

27、ited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest ver

28、sions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 61649 2008 Weibull analysis EN 61649 2008 IEC 61810-1 2015 Electromechanical elementary relays - Part 1: General and safety requirements EN 61810-1 2015 BS EN 618102:2017This

29、 page deliberately left blank 2 IEC 61810-2:2017 IEC 2017 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 7 3.21 Terms and definitions related to tests . 10 4 General considerations 10 5 Test conditions 11 5.1 Sample items 11 5.2 Environmental condit

30、ions 12 5.3 Operating conditions . 12 5.4 Test equipment . 13 6 Failure criteria . 13 7 Output data . 13 8 Analysis of output data 13 9 Presentation of reliability measures . 13 Annex A (normative) Data analysis 15 A.1 General . 15 A.2 Abbreviations 15 A.3 Symbols and definitions 15 A.4 Weibull dist

31、ribution . 16 A.5 Procedure . 17 A.5.1 Graphical methods . 17 A.5.2 Numerical methods 22 A.5.3 Confidence Intervals 23 A.5.4 WeiBayes Approach 25 Annex B (informative) Example of data analysis . 28 B.1 Graphical methods case study (cumulative hazard plot) 28 B.1.1 General . 28 B.1.2 Procedure of cum

32、ulative hazard plot 28 B.1.3 Example applied to life test data 30 B.2 Numerical methods case study (Weibull probability) 33 B.2.1 General . 33 B.2.2 Distribution parameters 33 B.2.3 Mean cycles to failure (MCTF) . 33 B.2.4 Value of 10B 34 B.2.5 Mean time to failure (MTTF) 34 B.3 Confidence intervals

33、 case study 34 B.3.1 General . 34 B.3.2 Interval estimation of 34 B.3.3 Interval estimation of . 35 B.3.4 Lower confidence limit for B10 . 35 B.3.5 Lower confidence limit for R 36 B.4 WeiBayes case study 36 Annex C (informative) Statistical tables 38 2 IEC 61810-2:2017 IEC 2017 CONTENTS FOREWORD . 4

34、 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 7 3.21 Terms and definitions related to tests . 10 4 General considerations 10 5 Test conditions 11 5.1 Sample items 11 5.2 Environmental conditions 12 5.3 Operating conditions . 12 5.4 Test equipment . 13 6 Failure criteri

35、a . 13 7 Output data . 13 8 Analysis of output data 13 9 Presentation of reliability measures . 13 Annex A (normative) Data analysis 15 A.1 General . 15 A.2 Abbreviations 15 A.3 Symbols and definitions 15 A.4 Weibull distribution . 16 A.5 Procedure . 17 A.5.1 Graphical methods . 17 A.5.2 Numerical m

36、ethods 22 A.5.3 Confidence Intervals 23 A.5.4 WeiBayes Approach 25 Annex B (informative) Example of data analysis . 28 B.1 Graphical methods case study (cumulative hazard plot) 28 B.1.1 General . 28 B.1.2 Procedure of cumulative hazard plot 28 B.1.3 Example applied to life test data 30 B.2 Numerical

37、 methods case study (Weibull probability) 33 B.2.1 General . 33 B.2.2 Distribution parameters 33 B.2.3 Mean cycles to failure (MCTF) . 33 B.2.4 Value of 10B 34 B.2.5 Mean time to failure (MTTF) 34 B.3 Confidence intervals case study 34 B.3.1 General . 34 B.3.2 Interval estimation of 34 B.3.3 Interva

38、l estimation of . 35 B.3.4 Lower confidence limit for B10 . 35 B.3.5 Lower confidence limit for R 36 B.4 WeiBayes case study 36 Annex C (informative) Statistical tables 38 BS EN 618102:2017IEC 61810-2:2017 IEC 2017 3 C.1 Table of gamma function . 38 C.2 Fractiles of the normal distribution 38 Annex

39、D (informative) Success run Test without failures . 40 D.1 General . 40 D.2 Confidence level and minimum reliability . 40 D.3 Example 41 Bibliography 42 Figure A.1 An example of Weibull probability paper . 18 Figure A.2 An example of cumulative hazard plotting paper . 20 Figure A.3 Plotting of data

40、points and drawing of a straight line 20 Figure A.4 Estimation of distribution parameters 21 Figure B.1 Estimation of distribution parameters 30 Figure B.2 Cumulative hazard plots . 32 Figure B.3 Type test versus WeiBayes analysed periodic test 37 Table A.1 Confidence levels for WeiBayes without fai

41、lures 26 Table B.1 Worksheet for cumulative hazard analysis 28 Table B.2 Example worksheet 31 Table B.3 First twenty failures in this example . 33 Table C.1 Values of the gamma function 38 Table C.2 Fractiles of the normal distribution . 39 Table D.1 Number of samples and life cycles . 41 BS EN 6181

42、02:2017IEC 61810-2:2017 IEC 2017 3 C.1 Table of gamma function . 38 C.2 Fractiles of the normal distribution 38 Annex D (informative) Success run Test without failures . 40 D.1 General . 40 D.2 Confidence level and minimum reliability . 40 D.3 Example 41 Bibliography 42 Figure A.1 An example of Weib

43、ull probability paper . 18 Figure A.2 An example of cumulative hazard plotting paper . 20 Figure A.3 Plotting of data points and drawing of a straight line 20 Figure A.4 Estimation of distribution parameters 21 Figure B.1 Estimation of distribution parameters 30 Figure B.2 Cumulative hazard plots .

44、32 Figure B.3 Type test versus WeiBayes analysed periodic test 37 Table A.1 Confidence levels for WeiBayes without failures 26 Table B.1 Worksheet for cumulative hazard analysis 28 Table B.2 Example worksheet 31 Table B.3 First twenty failures in this example . 33 Table C.1 Values of the gamma funct

45、ion 38 Table C.2 Fractiles of the normal distribution . 39 Table D.1 Number of samples and life cycles . 41 4 IEC 61810-2:2017 IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROMECHANICAL ELEMENTARY RELAYS Part 2: Reliability FOREWORD 1) The International Electrotechnical Commission (IEC)

46、is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition t

47、o other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in

48、 the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with condi

49、tions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Commit