1、 IEC 60127-7 Edition 2.0 2015-09 INTERNATIONAL STANDARD Miniature fuses Part 7: Miniature fuse-links for special applications IEC 60127-7:2015-09(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publi
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10、o give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC 60127-7 Edition 2.0 2015-09 INTERNATIONAL STANDARD Miniature fuses Part 7: Miniature fuse-links for special applications INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29
11、.120.50 ISBN 978-2-8322-2913-2 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 IEC 60127-7:2015 IEC 2015 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms and
12、 definitions 7 4 General requirements 8 5 Standard ratings 8 6 Marking . 8 7 General notes on tests 9 8 Dimensions and construction . 14 9 Electrical requirements 15 10 Standard sheets 25 Annex A (informative) Guidance on ratings to be specified by the manufacturer or to be agreed upon with the test
13、ing house 28 Bibliography 29 Figure 1 Standard test board for fuse-links with wire terminations 11 Figure 2 Test board for surface mount fuse-links . 12 Figure 3 Test fuse base . 13 Figure 4 Test circuits for breaking capacity tests 16 Table 1 Power factor and time constant . 17 Table 2 Testing sche
14、dule for individual ampere ratings for a.c. or d.c. breaking capacity fuse-links 20 Table 3 Testing schedule for individual ampere ratings for a.c. and d.c. breaking capacity fuse-links 21 Table 4 Testing schedule for maximum ampere rating of a homogeneous series (a.c. or d.c. breaking capacity fuse
15、-links) 22 Table 5 Testing schedule for maximum ampere rating of a homogeneous series (a.c. and d.c. breaking capacity fuse-links) . 23 Table 6 Testing schedule for minimum ampere rating of a homogeneous series 24 Table 7 Testing schedule for all intermediate ampere ratings of a homogeneous series 2
16、4 Table A.1 Guidance on ratings to be specified by the manufacturer or to be agreed upon with the testing house 28 IEC 60127-7:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MINIATURE FUSES Part 7: Miniature fuse-links for special applications FOREWORD 1) The International Electrotechni
17、cal Commission (IEC) 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
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23、rgence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC
24、marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual exp
25、erts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC
26、Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC
27、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 60127-7 has been prepared by subcommittee 32C: Miniature fuses, of IEC technical committee 32: Fuses. This second edition cancels and replaces
28、the first edition published in 2013. This edition includes the following significant technical changes with respect to the previous edition: a) defining a test board for surface mount fuse-links, Figure 2; b) defining test schedules for homogenous series. 4 IEC 60127-7:2015 IEC 2015 The text of this
29、 standard is based on the following documents: CDV Report on voting 32C/507/CDV 32C/513/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives,
30、 Part 2. A list of all parts in the IEC 60127 series, published under the general title Miniature fuses, can be found on the IEC website. This International Standard is to be used in conjunction with IEC 60127-1:2006, Miniature fuses Part 1: Definitions for miniature fuses and general requirements f
31、or miniature fuse- links and its Amendment 1 (2011). The clauses of this standard supplement, modify or replace the corresponding clauses in IEC 60127-1. Where there is no corresponding clause or subclause in this standard, the clause or subclause of IEC 60127-1 applies without modification as far a
32、s is reasonable. When this standard states “addition” or “replacement”, the relevant text in IEC 60127-1 is to be adapted accordingly. Subclauses which are additional to those in Part 1 are numbered starting from 101. Additional annexes are numbered AA, BB, etc. The committee has decided that the co
33、ntents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual v
34、ersion of this publication may be issued at a later date. IEC 60127-7:2015 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 same publication number in order to facil
35、itate 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 containing general requirements need not be repeated. The IEC 60127 series
36、, under the general heading Miniature fuses, is thus subdivided as follows: 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-miniat
37、ure 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 6
38、0127-7, 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 6 IEC 60127-7:2015 IEC 2015 MINIATURE FUSES Part 7: Miniature fuse-l
39、inks for special applications 1 Scope This part of IEC 60127 covers requirements for miniature fuse-links for special applications. This part of IEC 60127 is applicable to fuse-links with a rated voltage not exceeding 1 000 V, a rated current not exceeding 20 A and a rated breaking capacity not exce
40、eding 50 kA. It does not apply to fuses completely covered by the subsequent parts of IEC 60269-1. It does not apply to miniature fuse-links for appliances intended to be used under special conditions, such as in corrosive or explosive atmospheres. This part of IEC 60127 applies in addition to the r
41、equirements of IEC 60127-1. Miniature fuse-links for special applications are not intended to be replaced by the end-user of an electrical / electronic appliance. The object of this part of IEC 60127 is to establish uniform test methods for miniature fuse- links for special applications, so as to al
42、low verification of the values (for example melting time and breaking capacity values) specified by the manufacturer. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only
43、 the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. 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:
44、 Definitions for miniature fuses and general requirements for miniature fuse-links IEC 60127-1:2006/AMD1:2011 IEC 60127-1:2006/AMD2:2015 IEC 60127-4:2005, Miniature fuses Part 4: Universal modular fuse-links (UMF) Through- hole and surface mount types IEC 60127-4:2005/AMD1:2008 IEC 60127-4:2005/AMD2
45、:2012 IEC 60127-6:2014, Miniature fuses Part 6: Fuse-holders for miniature fuse-links IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems Part 1: Principles, requirements and tests IEC 60127-7:2015 IEC 2015 7 IEC 60695-2-12:2010, Fire hazard testing Part 2-12: Glowing/
46、hot-wire based test methods Glow-wire flammability index (GWFI) test method for materials IEC 60695-2-12:2010/AMD1:2014 IEC 60695-2-13:2010, Fire hazard testing Part 2-13: Glowing/hot-wire based test methods Glow-wire ignition temperature (GWIT) test method for materials IEC 60695-2-13:2010/AMD1:201
47、4 IEC 60695-4:2012, Fire hazard testing Part 4: Terminology concerning fire tests for electrotechnical products IEC 61249-2-7:2002, 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 f
48、lammability (vertical burning test), copper-clad ISO 3:1973, Preferred numbers Series of preferred numbers 3 Terms and definitions For the purposes of this document, the terms and definitions given in Clause 3 of IEC 60127- 1:2006, except 3.5, as well as the following apply. 3.1 miniature fuse-link
49、for special applications enclosed fuse-link which is not covered in IEC 60127-2, IEC 60127-3 or IEC 60127-4 and of rated breaking capacity not exceeding 50 kA, with a width and height not exceeding 12 mm and a length not exceeding 50 mm Note 1 to entry: Special precautions may be necessary to ensure that the fuse-links will be replaced by a fuse-link with the same technical parameters. Note 2 to entry: For fuse-links having a metallic cap at ea
