1、 IEC/TS 62441 Edition 2.0 2011-02 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE Safeguards against accidentally caused candle flame ignition for audio/video, communication and information technology equipment Mesures de protection contre lembrasement accidentel d une flamme de bougie dans les quipe
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16、ner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC/TS 62441 Edition 2.0 2011-02 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE Safeguards against accidentally
17、caused candle flame ignition for audio/video, communication and information technology equipment Mesures de protection contre lembrasement accidentel d une flamme de bougie dans les quipements audio/video, des technologies de la communication et de linformation INTERNATIONAL ELECTROTECHNICAL COMMISS
18、ION COMMISSION ELECTROTECHNIQUE INTERNATIONALE L ICS 35.260; 97.020 PRICE CODE CODE PRIX ISBN 978-2-88912-364-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale colourinside 2 TS 62441 IEC:2011 CONTENTS FOREWORD . 3 I
19、NTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Warning for users . 7 5 Control of fire growth 8 5.1 General . 8 5.2 Determination of candle flame accessible areas 8 5.3 Test methodology 9 5.3.1 Conditioning 9 5.3.2 Positioning the individual item . 9 5.3.3 Ignit
20、ion source . 10 5.4 Test for sustained flaming . 10 Bibliography 11 Figure 1 Examples of candle flame accessible areas . 9 Figure 2 Positioning of the needle flame burner . 10 TS 62441 IEC:2011 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SAFEGUARDS AGAINST ACCIDENTALLY CAUSED CANDLE FLAME IGNITION
21、 FOR AUDIO/VIDEO, COMMUNICATION AND INFORMATION TECHNOLOGY EQUIPMENT 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 promote internat
22、ional 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 (hereafter r
23、eferred 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 participate
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32、ernational Standards. In exceptional circumstances, a technical committee may propose the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, or The subject is still under technical developm
33、ent or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC 62441, which
34、 is a technical specification, has been prepared by IEC technical committee 108: Safety of electronic equipment within the field of audio/video, information technology and communication technology. 4 TS 62441 IEC:2011 This second edition of IEC 62441 cancels and replaces the first edition published
35、in 2006 and constitutes a technical revision. This edition includes the following technical changes with respect to the previous edition: acceptance of wood with a minimum thickness as equivalent to V-1; interpretation information regarding vertical surfaces. The text of this technical specification
36、 is based on the following documents: Enquiry draft Report on voting 108/391/DTS 108/412/RVC Full information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO
37、/IEC Directives, Part 2. The following print types are used: requirements proper and normative annexes: in roman type; compliance statements and test specifications: in italic type; notes/explanatory matter: in small roman type; terms that are defined in Clause 3: bold. The committee has decided tha
38、t the contents of this publication will 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 transformed into an International standard, reconfirmed, withdrawn, rep
39、laced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. TS 624
40、41 IEC:2011 5 INTRODUCTION The first version of this technical specification was discussed at the TC108 plenary meeting in Matsue, Japan in October 2008. It was decided to extend the TS for another three year period and to implement some changes as previously agreed in several TC108 meetings. The te
41、xt of this technical specification is based on the outcome of these discussions. In line with SMB decision 135/20 and document AC/22/2009, it is anticipated that the next step for this document would be a proposal for publication as an International Standard, taking into account any further developm
42、ents regarding the improvement of these requirements. It should be noted that the Fire Team of the HBSDT (Hazard based standard development team) developed requirements on a Heat Release Rate Performance Test and recommended a peak Heat Release Rate (pHRR) value of 50 KW for equipment covered by the
43、 standard. It also generated test data for the specific pre-selection criteria for equipment, such as keyboards, that have fuels that are predominantly horizontal in their construction. Development testing that had been conducted included assessment of products that were difficult to ignite with a c
44、andle and that passed preliminary pHRR testing with significant margin. However, these products commonly use fuels that may not pass 1) the flammability rating, 2) the material weight exemption, or 3) the sustained ignition testing. These additional requirements and test methods did not give the sam
45、e level of reproducibility that would be desired for inclusion as normative requirements in a standard, and are therefore not currently included in this technical specification. It should be noted that additional work is being undertaken to improve on the pHRR test procedure so that better reproduci
46、bility can be attained. 6 TS 62441 IEC:2011 SAFEGUARDS AGAINST ACCIDENTALLY CAUSED CANDLE FLAME IGNITION FOR AUDIO/VIDEO, COMMUNICATION AND INFORMATION TECHNOLOGY EQUIPMENT 1 Scope This technical specification introduces safeguards to reduce the likelihood of room flash-over as a result of accidenta
47、l ignition of exterior housings of audio/video and information communication technology products likely to be used in the home, caused by a candle flame. NOTE According to AC/22/2009 and SMB decision 135/20, this technical specification should currently only be used for television sets. It can be us
48、ed for other products only if a risk assessment indicates problems with these products. 2 Normative references 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 o
49、f the referenced document (including any amendments) applies. IEC 60695-11-5, Fire hazard testing Part 11-5: Test flames Needle-flame test method Apparatus, confirmatory test arrangement and guidance IEC 60695-11-10, Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methods IEC 60695-11-20, Fire hazard testing Part 11-20: Test flames 500 W flame test methods 3 Terms and
