EN 60127-3-2015 en Miniature fuses - Part 3 Sub-miniature fuse-links.pdf

1、BSI Standards PublicationMiniature fusesPart 3: Sub-miniature fuse-linksBS EN 60127-3:2015National forewordThis British Standard is the UK implementation of EN 60127-3:2015. It is identical to IEC 60127-3:2015. It supersedes BS EN 60127-3:1996 which is withdrawn.The UK participation in its preparati

2、on 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 correct application. The British

3、 Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 77841 4ICS 29.120.50 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 201

4、5.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60127-3:2015EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 60127-3 February 2015 ICS 29.120.50 Supersedes EN 60127-3:1996 English Version Miniature fuses - Part 3: Sub-miniature fuse-links(IEC 60127-3:2015) Co

5、upe-circuit miniatures - Partie 3: lments deremplacement subminiatures (IEC 60127-3:2015) Gerteschutzsicherungen - Teil 3:Kleinstsicherungseinstze (IEC 60127-3:2015) This European Standard was approved by CENELEC on 2015-02-24. CENELEC members are bound to comply with the CEN/CENELEC Internal Regula

6、tions 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 translationunder 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 version

8、s.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 Ne

9、therlands, 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 C

10、entre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60127-3:2015 E EN 60127-3:2015 - 2 - Foreword The text of document 32C/501/FDIS, future edition 3 of IEC 60127-3, prepared by SC 32C “Mini

11、ature fuses“ of IEC/TC 32 “Fuses“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60127-3:2015. 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 (do

12、p) 2015-11-24 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-02-24 This document supersedes EN 60127-3:1996. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or

13、 CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60127-3:2015 was approved by CENELEC as a European Standard without any modification. BS EN 60127-3:2015- 3 - EN 60127-3:2015 Annex ZA (normative) Normative

14、 references to international publications with their corresponding European publications The following documents, 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,

15、the latest edition of the referenced document (including any amendments) applies. NOTE 1 When 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 versions of the European Standards listed

16、in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60068-2-21 - Environmental testing - Part 2-21: Tests - Test U: Robustness of terminations and integral mounting devices EN 60068-2-21 - IEC 60127-1 2006 Miniature fuses - Part 1: Definitions for miniature fuses a

17、nd general requirements for miniature fuse-links EN 60127-1 2006 IEC 60695-11-5 - Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance EN 60695-11-5 - IEC 61249-2-7 - Materials for printed boards and other interconnecting str

18、uctures - Part 2-7: Reinforced base materials, clad and unclad - Epoxide woven E-glass laminated sheet of defined flammability (vertical burning test), copper-clad EN 61249-2-7 - +EN 61249-2-7:2002/corrigendum Sep. 2005 2005 ISO 3 - Preferred numbers; Series of preferred numbers - - BS EN 60127-3:20

19、15 2 IEC 60127-3:2015 IEC 2015 CONTENTS INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms and definitions 6 4 General requirements 6 5 Standard ratings 7 6 Marking . 7 7 General notes on tests 7 8 Dimensions and construction . 9 9 Electrical requirements 10 10 Standard sheets 18 Figure 1 S

20、tandard test board (see 7.3) . 8 Figure 2 Standard test base for test board (see 7.3) 9 Figure 3 Typical circuit for breaking capacity tests for low breaking capacity sub-miniature fuse-links (see 9.3) 11 Table 1 Testing schedule for individual ampere ratings, standard sheet 1 and 2 13 Table 2 Testi

21、ng schedule for individual ampere ratings, standard sheet 3 and 4 14 Table 3 Testing schedule for maximum ampere rating of a homogeneous series, standard sheet 1 and 2 . 15 Table 4 Testing schedule for maximum ampere rating of a homogeneous series, standard sheet 3 and 4 . 16 Table 5 Testing schedul

22、e for minimum ampere rating of a homogeneous series, standard sheet 1 to 4 17 BS EN 60127-3:2015IEC 60127-3:2015 IEC 2015 5 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 sam

23、e publication number in order to facilitate reference to fuses 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 re

24、quirements need not be repeated. The new IEC 60127 series is 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 fu

25、se-links IEC 60127-3, Miniature fuses Part 3: Sub-miniature 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 fu

26、ses Part 6: Fuse-holders for miniature fuse-links IEC 60127-7, 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

27、IEC 60127 covers additional requirements, test equipment and standard sheets. The SI system of units is used throughout this standard. BS EN 60127-3:2015 6 IEC 60127-3:2015 IEC 2015 MINIATURE FUSES Part 3: Sub-miniature fuse-links 1 Scope This part of IEC 60127 is applicable to sub-miniature fuse-li

28、nks adapted to printed circuits and used for the protection of electric appliances, electronic equipment and component parts thereof, normally intended to be used indoors. It does not apply to sub-miniature fuse-links for appliances intended to be used under special conditions, such as in a corrosiv

29、e or explosive atmosphere. 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 sub-miniature fuse-links applying in addition to the requirements of IEC 60127-1. 2 Normative references The following doc

30、uments, 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 60068-2-21, Environm

31、ental testing Part 2-21: Tests Test U: Robustness of terminations and integral mounting devices IEC 60127-1:2006, Miniature fuses Part 1: Definitions for miniature fuses and general requirements for miniature fuse-links Amendment 1:2011 IEC 60695-11-5, Fire hazard testing Part 11-5: Test flames Need

32、le-flame test method Apparatus, confirmatory test arrangement and guidance IEC 61249-2-7, Materials for printed boards and other interconnecting structures Part 2-7: Reinforced base materials clad and unclad Epoxide woven E-glass laminated sheet of defined flammability (vertical burning test), coppe

33、r-clad ISO 3, Preferred numbers Series of preferred numbers 3 Terms and definitions For the purposes of this document, the terms and definitions in Clause 3 of IEC 60127-1:2006 apply. 4 General requirements Clause 4 of IEC 60127-1:2006 applies. BS EN 60127-3:2015IEC 60127-3:2015 IEC 2015 7 5 Standar

34、d ratings Clause 5 of IEC 60127-1:2006 applies. 6 Marking Clause 6 of IEC 60127-1:2006 applies except as follows: Addition: 6.4 Sub-miniature fuse-links according to standard sheets 3 and 4 may be provided with markings for the rated current, the rated voltage and the time/current characteristic on

35、the top so that they are visible when the fuse-link is mounted. Additional subclause: 6.5 Where marking is impractical due to space limitations, the relevant information should appear on the smallest package and in the manufacturers technical literature. 7 General notes on tests Clause 7 of IEC 6012

36、7-1:2006 applies except as follows: Addition: 7.2.1 For testing individual fuse ratings according to standard sheets 1 and 2, the number of sub-miniature fuse-links required is 66, of which 12 are kept as spares. The testing schedule is shown in Table 1. For testing individual fuse ratings according

37、 to standard sheets 3 and 4, the number of fuse-links required is 51, of which 12 are kept as spares. The testing schedule is shown in Table 2. For the maximum ampere rating of a homogeneous series, the number of fuse-links required in the case of fuse-links in accordance with standard sheets 1 and

38、2 is 56, of which 22 are kept as spares. The testing schedule is shown in Table 3. The number of fuse-links required in the case of fuse-links in accordance with standard sheets 3 and 4 is 51, of which 22 are kept as spares. The testing schedule is shown in Table 4. For the minimum ampere rating of

39、a homogeneous series the number of fuse-links required is 38, of which 16 are kept as spares. The test schedule is shown in Table 5. In addition to the test mentioned in 7.2.1 of IEC 60127-1:2006, sub-miniature fuse-links shall be taken and shall be tested or inspected in accordance with the followi

40、ng item e): e) Sub-miniature fuse-link terminations (8.3) Replacement: 7.3 Fuse-bases for testing Fuse-links shall be mounted upon the appropriate test board (see Figure 1) by soldering. This test board shall then be mounted on the test fuse-base (Figure 2). The test board shall be made of epoxide w

41、oven glass fabric copper-clad laminated sheet, as defined in IEC 61249-2-7. BS EN 60127-3:2015 8 IEC 60127-3:2015 IEC 2015 The nominal sheet thickness shall be 1,6 mm. The nominal thickness of the cooper layer shall be 0,035 mm (0,070 mm above 5 A). Metal parts of the fuse-base shall be made of bras

42、s with copper content between 58 % and 70 %. Contact parts shall be silver-plated. When two or more sub-miniature fuse-links are tested in series, the fuse-bases shall be located so that there will be a spacing of not less than 50 mm between any two sub-miniature fuse-links under test. The conductor

43、 connecting the fuse-bases together and connecting the fuse-bases to the ammeter and the source of supply shall be insulated copper wire. The length of each conductor shall be 250 mm and the cross-sectional area of the wire shall be approximately 1 mm2. Dimensions in millimetres Key O copper layer,

44、thickness 0,035 mm (0,070 mm for rated currents above 5 A) U connection for voltage drop measurement e 2,54 mm n 1,2,3 (to be adapted depending on the length of the fuse-link) n1 1 for fuse-links up to and including 5 A 2 for fuse-links above 5 A Figure 1 Standard test board (see 7.3) IEC NOTE Minim

45、um land spacing is under consideration (applicable when n is less than 2). In this case the diameter of the terminal hole has to be reduced from 1,5 mm to 1,0 mm. BS EN 60127-3:2015IEC 60127-3:2015 IEC 2015 9 Dimensions in millimetres Key A base of low heat conducting material, thickness 10 mm B bra

46、ss electrodes 10 mm square C sub-miniature fuse-link soldered in place D fixing screws E contact screws holding solder terminal F printed circuit board (see Figure 1) G space between sub-miniature fuse-link enclosure and board equals (0,5 0,25) mm or for tubular fuse-link 1 mm H top view of base wit

47、h 10 mm square brass electrodes Figure 2 Standard test base for test board (see 7.3) 8 Dimensions and construction Clause 8 of IEC 60127-1:2006 applies except as follows. 8.2 Construction Addition: The sub-miniature fuse-link shall be resistant to heat according to 9.7 of IEC 60127-1:2006 and to fir

48、e in accordance with IEC 60695-11-5 (needle-flame test). The duration of the application of the test flame is 10 s. Not required for glass or ceramic. Compliance is checked by inspection. IEC BS EN 60127-3:2015 10 IEC 60127-3:2015 IEC 2015 This standard is based on the assumption that the case of th

49、e sub-miniature fuse-link is made of glass, ceramic or similar non-combustible material. For other material, such as the optional insulating sleeve or epoxy coating or similar material shown on standard sheet 2, 3 or 4 additional tests are under consideration. Addition: 8.3 Sub-miniature fuse-link terminations The sub-miniature fuse-link terminations should be firmly attached so that it is not possible to remove them without damaging the sub-miniatur