BS EN 60127-2-2014 Miniature fuses Cartridge fuse-links《微型熔断器 管式熔断体》.pdf

1、BSI Standards PublicationMiniature fusesPart 2: Cartridge fuse-linksBS EN 60127-2:2014National forewordThis British Standard is the UK implementation of EN 60127-2:2014. It isidentical to IEC 60127-2:2014. It supersedes BS EN 60127-2:2003+A2:2010,which will be withdrawn on 24 October 2017.The UK par

2、ticipation in its preparation was entrusted to TechnicalCommittee PEL/32, Fuses.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its corre

3、ct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 77596 3ICS 29.120.50Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy

4、 Committee on 30 November 2014. Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60127-2:2014EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 60127-2 October 2014 ICS 29.120.50 Supersedes EN 60127-2:2003 English Version Miniature fuses - Part 2: Cartridge fuse-l

5、inks (IEC 60127-2:2014) Coupe-circuit miniatures - Partie 2: Cartouches (CEI 60127-2:2014) Gerteschutzsicherungen - Teil 2: Feinsicherungseinstze (IEC 60127-2:2014) This European Standard was approved by CENELEC on 2014-10-24. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulat

6、ions 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 may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC mem

7、ber. 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 notified to the CEN-CENELEC Management Centre has the same status as the official versio

8、ns.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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the N

9、etherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation ElectrotechniqueEuropisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management

10、 Centre: Avenue Marnix 17, B-1000 Brussels 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60127-2:2014 E EN 60127-2:2014 - 2 - Foreword The text of document 32C/493/FDIS, future edition 3 of IEC 60127-2, prepared by SC 32C “Mi

11、niature fuses“ of IEC/TC 32 “Fuses“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60127-2:2014. 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 (

12、dop) 2015-07-24 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-10-24 This document supersedes EN 60127-2:2003. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/

13、or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60127-2:2014 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to

14、 be added for the standard indicated: IEC 61249-2-7:2002 NOTE Harmonized as EN 61249-2-7:2002 (not modified). BS EN 60127-2:2014- 3 - EN 60127-2:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in who

15、le or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an International Publicati

16、on has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu Publication Year Title EN/HD Year IEC 60068-2-20 - Environmental testing

17、 - Part 2-20: Tests - Test T: Test methods for solderability and resistance to soldering heat of devices with leads EN 60068-2-20 - IEC 60068-2-21 2006 Environmental testing - Part 2-21: Tests - Test U: Robustness of terminations and integral mounting devices EN 60068-2-21 2006 IEC 60127-1 +A1 2006

18、2011 Miniature fuses - Part 1: Definitions for miniature fuses and general requirements for miniature fuse-links EN 60127-1 +A1 2006 2011 ISO 3 - Preferred numbers; Series of preferred numbers - - BS EN 60127-2:2014 2 IEC 60127-2:2014 IEC 2014 CONTENTS INTRODUCTION . 6 1 Scope and object . 7 2 Norma

19、tive references. 7 3 Terms and definitions 7 4 General requirements 7 5 Standard ratings 7 6 Marking . 8 7 General notes on tests . 8 8 Dimensions and construction . 14 9 Electrical requirements 16 10 Standard sheets 18 Annex A (normative) Miniature fuse-links with wire terminations 38 A.1 General .

20、 38 A.2 Scope . 38 A.3 General notes on tests 38 A.3.1 Type tests 38 A.3.2 Testing schedule 38 A.3.3 Test bases for tests 39 A.4 Dimensions and construction . 41 A.4.1 Dimensions 41 A.4.2 Mechanical tests on terminations 41 A.4.3 Solderability of terminations . 42 A.4.4 Resistance to soldering heat

21、42 A.5 Electrical requirements 42 A.5.1 Voltage drop 43 A.5.2 Time/current characteristic at normal ambient temperature . 43 A.5.3 Breaking capacity . 43 A.5.4 Fuse-link temperature 43 Bibliography . 44 Figure 1 Test fuse-base for 5 mm 20 mm and 6,3 mm 32 mm fuse-links Rated currents up to and inclu

22、ding 6,3 A (see 7.3) . 11 Figure 2 Test fuse-base for 5 mm 20 mm and 6,3 mm 32 mm fuse-links Rated currents exceeding 6,3 A (see 7.3) 12 Figure 3 Test fuse-base for breaking capacity tests (see 7.3) 13 Figure 4 Axial pull test apparatus . 15 Figure 5 Alignment gauge (see 8.4) 16 Figure 6 Typical tes

23、t circuit for breaking-capacity tests for high-breaking capacity fuse-links (see 9.3) . 17 Figure 7 Typical test circuit for breaking-capacity tests for low- and enhanced-breaking capacity fuse-links (see 9.3) 17 Figure A.1 Test board 39 BS EN 60127-2:2014IEC 60127-2:2014 IEC 2014 3 Figure A.2 Test

24、base 40 Figure A.3 Dimensions of fuse-link with wire terminations . 41 Table 1 Testing schedule for individual ampere ratings . 9 Table 2 Testing schedule for maximum ampere rating of a homogeneous series . 9 Table 3 Testing schedule for minimum ampere rating of a homogeneous series 10 Table A.1 Tes

25、ting schedule 39 BS EN 60127-2:2014 6 IEC 60127-2:2014 IEC 2014 INTRODUCTION According to the wish expressed by the users of miniature fuses, all standards, recommendations and other documents relating to miniature fuses should have the same publication number in order to facilitate reference to fus

26、es in other specifications, for example, equipment specifications. Furthermore, a single publication number and subdivision into parts would facilitate the establishment of new standards, because clauses and subclauses containing general requirements need not be repeated. The new IEC 60127 series is

27、 thus subdivided as follows: IEC 60127, Miniature fuses (general title). IEC 60127-1, Miniature fuses Part 1: Definitions for miniature fuses and general requirements for miniature fuse-links IEC 60127-2, Miniature fuses Part 2: Cartridge fuse-links IEC 60127-3, Miniature fuses Part 3: Sub-miniature

28、 fuse-links IEC 60127-4, Miniature fuses Part 4: Universal modular fuse-links (UMF) Through-hole and surface mount types IEC 60127-5, Miniature fuses Part 5: Guidelines for quality assessment of miniature fuse-links IEC 60127-6, Miniature fuses Part 6: Fuse-holders for miniature fuse-links IEC 60127

29、-7, Miniature fuses Part 7: Miniature fuse-links for special applications IEC 60127-8, (Free for further documents) IEC 60127-9, (Free for further documents) IEC 60127-10, Miniature fuses Part 10: User guide for miniature fuses This Part of IEC 60127 covers additional requirements, test equipment an

30、d standard sheets. The SI system of units is used throughout this standard. BS EN 60127-2:2014IEC 60127-2:2014 IEC 2014 7 MINIATURE FUSES Part 2: Cartridge fuse-links 1 Scope and object This part of IEC 60127 relates to special requirements applicable to cartridge fuse-links for miniature fuses with

31、 dimensions measuring 5 mm 20 mm and 6,3 mm 32 mm for the protection of electric appliances, electronic equipment and component parts thereof, normally intended for use indoors. It does not apply to cartridge fuse-links for appliances intended to be used under special conditions, such as in corrosiv

32、e or explosive atmospheres. This standard applies in addition to the requirements of IEC 60127-1. The object of this standard is to define special and additional test methods for cartridge fuse-links applying in addition to the requirements of IEC 60127-1. 2 Normative references The following docume

33、nts, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-2-20, Environment

34、al testing Part 2-20: Tests Test T: Test methods for solderability and resistance to soldering heat of devices with leads IEC 60068-2-21:2006, Environmental testing Part 2-21: Tests Test U: Robustness of terminations and integral mounting devices IEC 60127-1:2006, Miniature fuses Part 1: Definitions

35、 for miniature fuses and general requirements for miniature fuse-links Amendment 1:2011 ISO 3, Preferred numbers Series of preferred numbers 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60127-1:2006, Clause 3, apply. 4 General requirements Clause

36、4 of IEC 60127-1:2006 applies. 5 Standard ratings Clause 5 of IEC 60127-1:2006 applies. BS EN 60127-2:2014 8 IEC 60127-2:2014 IEC 2014 6 Marking Clause 6 of IEC 60127-1:2006 applies except as follows: 6.1 Addition: e) A symbol denoting the rated breaking capacity. This symbol shall be placed between

37、 the marking for the rated current and the marking for the rated voltage. These symbols are H denoting high breaking capacity, L denoting low breaking capacity, E denoting enhanced breaking capacity. EXAMPLES of marking: T 3 1 5 L 2 5 0 V F 4 H 2 5 0 V T 3 1 5 E 2 5 0 V 6.4 Add the following paragra

38、ph after the first paragraph: The values for “d” and “s” shall be 0,8 mm 0,2 mm. 7 General notes on tests Clause 7 of IEC 60127-1:2006 applies except as follows: 7.2.1 Addition: For testing individual fuse ratings, the number of fuse-links required is 48, of which 12 are kept as spares. The testing

39、schedule is shown in Table 1. For the maximum ampere rating of a homogeneous series, the number of fuse-links required is 48, of which 22 are kept as spares. The testing schedule is shown in Table 2. For the minimum ampere rating of a homogeneous series the number of fuse-links required is 33, of wh

40、ich 16 are kept as spares. The testing schedule is shown in Table 3. BS EN 60127-2:2014IEC 60127-2:2014 IEC 2014 9 Table 1 Testing schedule for individual ampere ratings Sub- clause Description Fuse-link no. 1-6 7 9 11 8 10 13 12 14 15 16 17 18 19 20 21 22 24 26 23 25 27 28 29 30 31 32 33 34 36 38 3

41、5 37 39 40 41 42 43 44 45 46 47 48 9.4 aEndurance test X 9.2.2 aTest at elevated temperature bX 9.2.1aTime/current characteristics 10 INX 4 INX 2,75 INX 2,0 INor 2,1 INX 9.3 Breaking capacity test: X Rated breaking capacity 5 times the rated current X 10 times the rated current X 50 times the rated

42、current X 250 times the rated current X 8.3 Terminations (end cap test) X X X X 8.5 aSoldered joints X X X X X X 6.2 aLegibility and indelibility of marking X X X X aThese subclauses are to be found in IEC 60127-1. bApplicable only when specified on the standard sheet. Table 2 Testing schedule for m

43、aximum ampere rating of a homogeneous series Sub- clause Description Fuse-link numbers in decreasing value of voltage drop 1-6 7 8 9 10 11 12 13-17 18-27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 9.4 aEndurance test X 9.2.2 aTest at elevated temperature bX 9.2.1 aTime/current ch

44、aracteristics 10 INX 4 INX 2,75 INX 2,0 INor 2,1 INX 9.3 Rated breaking capacity X 8.3 Terminations (end cap test) X X X X 8.5 aSoldered joints X X X X X X 6.2 aLegibility and indelibility of marking X X X X aThese subclauses are to be found in IEC 60127-1. bApplicable only when specified on the sta

45、ndard sheet. BS EN 60127-2:2014 10 IEC 60127-2:2014 IEC 2014 Table 3 Testing schedule for minimum ampere rating of a homogeneous series Sub-clause Description Fuse-link numbers in decreasing value of voltage drop 1-6 7 8 9 10 11 12 13-17 18-27 28 29 30 31 32 33 9.4 aEndurance test X 9.2.1 aTime/curr

46、ent characteristics 10 INX 2,0 INor 2,1 INX 9.3 Rated breaking capacity X aThese subclauses are to be found in IEC 60127-1. Replacement: 7.3 Fuse-bases for tests For tests that require a fuse-base for mounting the fuse-links, bases according to Figures 1, 2 or 3, shall be used as appropriate. The co

47、ntact resistance between each contact and a silvered brass piece having the same nominal dimensions and shape as the fuse-link to be tested shall not exceed 3 m and is measured under the following conditions: a) in order to prevent the breakdown of thin insulating layers on the contacts, the e.m.f.

48、of the circuit shall not exceed 20 mV (d.c. or a.c. peak); b) in order to prevent undue heating of the contacts, the current flowing shall not exceed 1 A. Metal parts of the fuse-base, except the spring and connections, shall be made of brass. Brass parts of the fuse-base and of the gauge for measur

49、ing contact resistance shall have a copper content of between 58 % and 70 %. Contacts shall be silver-plated. For fuse-links with rated currents up to and including 6,3 A, a fuse-base according to Figure 1 shall be used. The contact force shall be between 4 N and 6 N. The flexible lead and terminal wires shall be of copper and shall