1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 60512-20-3:2010Connectors for electronicequipment Tests andmeasurementsPart 20-3: Fire hazard tests Test 20c:Flammability, glow-wireBS EN 60512-20-3:2010 BRITISH STANDARDNa
2、tional forewordThis British Standard is the UK implementation of EN60512-20-3:2010. It is identical to IEC 60512-20-3:2010. It supersedesTest 20c from BS 5772-9:1993, IEC 60512-9:1992, which will remaincurrent until all the tests it contains have been revised.The UK participation in its preparation
3、was entrusted to TechnicalCommittee EPL/48, Electromechanical components and mechanicalstructures for electronic equipment.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a co
4、ntract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 62171 0ICS 31.220.01Compliance 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 August 2010
5、.Amendments issued since publicationDate Text affectedBS EN 60512-20-3:2010EUROPEAN STANDARD EN 60512-20-3 NORME EUROPENNE EUROPISCHE NORM July 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnisch
6、e Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60512-20-3:2010 E ICS 31.220.01 English version Connectors for electronic equipment - Tests and measurements - P
7、art 20-3: Fire hazard tests - Test 20c: Flammability, glow-wire (IEC 60512-20-3:2010) Connecteurs pour quipements lectroniques - Essais et mesures - Partie 20-3: Essais relatifs aux risques du feu - Essais 20c: Inflammabilit, fil incandescent (CEI 60512-20-3:2010) Steckverbinder fr elektronische Ein
8、richtungen - Mess- und Prfverfahren - Teil 20-3: Prfungen auf Feuersicherheit - Prfung 20c: Brennbarkeit, Glhdraht (IEC 60512-20-3:2010) This European Standard was approved by CENELEC on 2010-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the con
9、ditions 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 Central Secretariat or to any CENELEC member. This European Standard exists in
10、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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotech
11、nical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Swit
12、zerland and the United Kingdom. BS EN 60512-20-3:2010EN 60512-20-3:2010 - 2 - Foreword The text of document 48B/2161/FDIS, future edition 1 of IEC 60512-20-3, prepared by SC 48B, Connectors, of IEC TC 48, Electromechanical components and mechanical structures for electronic equipment, was submitted
13、to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60512-20-3 on 2010-07-01. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent righ
14、ts. 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) 2011-04-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-07-01 Annex
15、ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60512-20-3:2010 was approved by CENELEC as a European Standard without any modification. _ BS EN 60512-20-3:2010- 3 - EN 60512-20-3:2010 Annex ZA (normative) Normative references to international publicatio
16、ns with their corresponding European publications The following 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.
17、 NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60695-2-10 - Fire hazard testing - Part 2-10: Glowing/hot-wire based test methods - Glow-wire apparatus and common test procedure E
18、N 60695-2-10 - IEC 60695-2-11 - Fire hazard testing - Part 2-11: Glowing/hot-wire based test methods - Glow-wire flammability test method for end-products EN 60695-2-11 - BS EN 60512-20-3:2010 2 60512-20-3 IEC:2010 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ CONNECTORS FOR ELECTRONIC EQUIPMENT TESTS
19、 AND MEASUREMENTS Part 20-3: Fire hazard tests Test 20c: Flammability, glow-wire FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to prom
20、ote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides
21、(hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also
22、 participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possib
23、le, 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 Committees in that sense. Whil
24、e all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake t
25、o apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence 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 attestatio
26、n of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC 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 thi
27、s publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts 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 ind
28、irect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC 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 t
29、he correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC 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 60512-20-3 has been
30、prepared by subcommittee 48B: Connectors, of IEC technical committee 48: Electromechanical components and mechanical structures for electronic equipment. This standard cancels and replaces Test 20c of IEC 60512-9, issued in 1992. The structure of IEC 60512 series is explained in IEC 60512-1-100. The
31、 text of this standard is based on the following documents: FDIS Report on voting 48B/2161/FDIS 48B/2196/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. BS EN 60512-20-3:201060512-20-3 IEC:2010 3 This publication
32、 has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of the IEC 60512 series, under the general title Connectors for electronic equipment Tests and measurements, can be found on the IEC website. The committee has decided that the contents of this publication will
33、remain unchanged until the stability date indicated on the IEC web site 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. BS EN 60512-20-3:2010 4 60512-20-3 IEC:2010
34、CONNECTORS FOR ELECTRONIC EQUIPMENT TESTS AND MEASUREMENTS Part 20-3: Fire hazard tests Test 20c: Flammability, glow-wire 1 Scope and object This part of IEC 60512, when required by the detail specification, is used for testing connectors within the scope of technical committee 48. It may also be us
35、ed for similar devices when specified in a detail specification. The object of this standard is to detail a standard test method to determine the flammability of a connector when exposed to a glow-wire test under specified conditions. The glow-wire test simulates thermal stresses which may be produc
36、ed by such sources of heat or ignition as, for example, glowing elements or overloaded components, for short periods, in order to assess by a simulation technique the fire hazard or burning of a single electronic component. 2 Normative references The following referenced documents are indispensable
37、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 60695-2-10, Fire hazard testing Part 2-10: Glowing/hot-wire based test methods Glow-wire apparatus
38、 and common test procedure IEC 60695-2-11, Fire hazard testing Part 2-11: Glowing/hot-wire based test methods Glow-wire flammability test method for end-products 3 Preparation of the specimen The specimen shall consist of an unwired connector, mounted and provided with contacts as specified in the d
39、etail specification. 4 Test method The test shall be carried out in accordance with IEC 60695-2-10 and IEC 60695-2-11. A wooden board covered with a single layer of tissue paper shall be placed underneath the specimen to be tested as described in IEC 60695-2-10. The position of the specimen and the
40、place of application of glow-wire shall be as specified in the detail specification. The glow-wire consists of a specified loop of nickel/chromium (80/20) wire 4 mm diameter. A sheathed fine-wire thermocouple, having an overall diameter of 0,5 mm and wires of NiCr and NiAl with the welded point loca
41、ted inside the sheath, is used for measuring the temperature of the glow-wire. The glow-wire with the thermocouple is shown in Figure 1. BS EN 60512-20-3:201060512-20-3 IEC:2010 5 The test apparatus shall be so designed that the glow-wire is kept in a horizontal plane and a force of 0,8 N to 1,2 N i
42、s applied to the specimen, the force being maintained at this value when the glow-wire or the specimen is moved horizontally one towards the other over a distance of at least 7 mm. The temperature of the tip of the glow-wire and the duration of its application shall be specified in the detail specif
43、ication. Table 1 Preferred test temperatures Preferred test temperatures C Tolerances C 550 10 650 10 750 10 850 15 960 15 Preferred duration of application: 30 s 1 s. Dimensions in millimetres 30,6 0,22 100 1 12 1 50 270 min. 1 ADetail Z Z R26 2R20 2 32IEC 1225/10 Key 1 Glow-wire 2 Thermocouple 3 S
44、tud Glow-wire material: Nickel/Chromium (80/20) Diameter: 4,0 mm 0,04 mm (before bending) Diameter A: (After bending) When forming the glow-wire loop, care shall be taken to avoid fine cracking at the tip. NOTE Annealing is a suitable process for prevention of fine cracking at the tip. Figure 1 Glow
45、-wire and position of the thermocouple BS EN 60512-20-3:2010 6 60512-20-3 IEC:2010 5 Requirements After removal of the glow-wire, the specimen shall preferably not continue to burn. If it continues to burn, the burning time shall not exceed the maximum limit specified in the detail specification. In
46、 no case shall any material drops ignite the underlying tissue paper. 6 Details to be specified When this test is required by the detail specification, the following details shall be specified: a) number and variant of the specimens to be tested; b) mounting of the specimen; c) severity (duration of
47、 the application of the glow-wire); d) point of application of the glow-wire; e) maximum burning time; f) temperature of the glow-wire tip: g) any deviation from the standard test method and/or conditions. _ This page deliberately left blankBSI is the independent national body responsible for prepar
48、ing British Standardsand other standards-related publications, information and services. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.British Standards Institution (BSI)raising standards worldwideBSI Group Headquarters389 Chiswick
49、 High Road London W4 4AL UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards are updated by amendment or revision. Users of British Stan-dards should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and serv-ices. We would be grateful if anyone finding an inaccuracy or ambiguity whileusing this British Standard wou
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