CLC TS 62441-2012 Safeguards against accidentally caused candle flame ignition for audio video communication and information technology equipment.pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationSafeguards against accidentally caused candle flame ignition for audio/video, communication and information technology equipmentPD CLC/TS 62441:2012National forewordThis Publishe

2、d Document is the UK implementation of CLC/TS 62441:2012. It is identical to IEC/TS 62441:2011. It supersedes DD CLC/TS 62441:2007 which is withdrawn.Users should be aware that the UK national committee abstained from thevote on this Technical Specification as consensus on its content was not achiev

3、ed at national level. However, it is necessary to make this publication available because of an undated reference in BS EN 60065:2002.The UK participation in its preparation was entrusted to Technical CommitteeEPL/108, Safety of electronic equipment within the field of audio/video, information techn

4、ology and communication technology.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 of acontract. Users are responsible for its correct application. The British Standards Institu

5、tion 2013. Published by BSI Standards Limited 2013 ISBN 978 0 580 82161 5 ICS 35.260; 97.020Compliance with a British Standard cannot confer immunity from legal obligations.This Published Document was published under the authority of the Standards Policy and Strategy Committee on 30 June 2013.Amendm

6、ents issued since publicationDate Text affectedPUBLISHED DOCUMENTPD CLC/TS 62441:2012TECHNICAL SPECIFICATION CLC/TS 62441 SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION February 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Euro

7、pisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. CLC/TS 62441:2012 E ICS 35.260; 97.020 Supersedes CLC/TS 62441:2007English versi

8、on Safeguards against accidentally caused candle flame ignition for audio/video, communication and information technology equipment (IEC/TS 62441:2011) Mesures de protection contre lembrasement accidentel d une flamme de bougie dans les quipements audio/vido, des technologies de la communication et

9、de linformation (CEI/TS 62441:2011) PD CLC/TS 62441:2013Schutzmanahmen gegen zufllige Entzndung von Gerten der Audio/Video-, Kommunikations- und Informationstechnologie durch Kerzenflamme (IEC/TS 62441:2011) PD CLC/TS 62441:2013This Technical Specification was approved by CENELEC on 2012-01-23. CENE

10、LEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force. CENELEC members are the national electrotechnical committees o

11、f 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, Switzerland, Turkey an

12、d the United Kingdom. PD CLC/TS 62441:2013CLC/TS 62441:2012 2 Foreword This document (CLC/TS 62441:2012) consists of the text of IEC/TS 62441:2011 prepared by IEC/TC 108 “Safety of electronic equipment within the field of audio/video, information technology and communication technology“. This docume

13、nt supersedes CLC/TS 62441:2007. CLC/TS 62441:2012 includes the following significant technical changes with respect to CLC/TS 62441:2007: acceptance of wood with a minimum thickness as equivalent to V-1; interpretation information regarding vertical surfaces. The following print types are used: req

14、uirements 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. Attention is drawn to the possibility that some of the elements of this document may be the s

15、ubject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC/TS 62441:2011 was approved by CENELEC as a Technical Specification without any modification. PD CLC/TS 62441:2013 3 C

16、LC/TS 62441:2012 Annex ZA(normative) Normative 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 e

17、dition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 606

18、95-11-5 - Fire hazard testing Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance EN 60695-11-5 - IEC 60695-11-10 - Fire hazard testing Part 11-10: Test flames - 50 W horizontal and vertical flame test methods EN 60695-11-10 - IEC 60695-11-20 - F

19、ire hazard testing Part 11-20: Test flames - 500 W flame test methods EN 60695-11-20 - PD CLC/TS 62441:2013 2 TS 62441 IEC:2011 CONTENTS INTRODUCTION . 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 Determin

20、ation 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 Ignition 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 flam

21、e burner . 10 PD CLC/TS 62441:2013TS 62441 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

22、agreed in several TC108 meetings. The text 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,

23、taking into account any further developments 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) val

24、ue of 50 KW for equipment covered by the 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 product

25、s that were difficult to ignite with a candle 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 requiremen

26、ts and test methods did not give the same 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

27、 test procedure so that better reproducibility can be attained. PD CLC/TS 62441:2013 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 redu

28、ce the likelihood of room flash-over as a result of accidental 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 sh

29、ould currently only be used for television sets. It can be used 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 editio

30、n cited applies. For undated references, the latest edition of 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 Pa

31、rt 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 definitions 3.1 combustible material organic material, capable of combustion by a candle flame NOTE 1 Metal or ceramic are examples

32、of materials that are not combustible by a candle flame. NOTE 2 All plastic materials are considered combustible by a candle flame, regardless of flammability classification. 3.2 flammability classification of materials classification of the burning and extinguishing behaviour of a material NOTE 1 M

33、aterial classes are defined in 3.2.1 to 3.2.4. Where a certain class of material is required, a material with a better classification is always acceptable. NOTE 2 When applying the requirements in this technical specification, a material of 5VA class material is regarded as better than 5VB class mat

34、erial, 5VB class material better than V-0 class material and V-0 classmaterial better than V-1 class material (see 5.1). NOTE 3 When applying the requirements in this technical specification, V-2 class material or HB class material is considered less than V-1 class material (see 5.1). For further de

35、tails regarding these flame classifications, see IEC 60695-11-10. PD CLC/TS 62441:2013TS 62441 IEC:2011 7 3.2.1 V-0 class material material tested in the thinnest significant thickness used and classified V-0 according to IEC 60695-11-10 3.2.2 V-1 class material material tested in the thinnest signi

36、ficant thickness used and classified V-1 according to IEC 60695-11-10 3.2.3 5VA class material material tested in the thinnest significant thickness used and classified 5VA according to IEC 60695-11-20 3.2.4 5VB class material material tested in the thinnest significant thickness used and classified

37、 5VB according to IEC 60695-11-20 3.3 individual item equipment or a part of the equipment, with its own exterior housing, that is not required to be in physical contact with another equipment or part of the other equipment for its normal operation NOTE An individual item may be electrically connect

38、ed to other equipment and may or may not contain its own power source. Examples include keyboards, display units, speakers, etc. 3.4 candle flame accessible area an area of combustible material on the exterior surface of an individual item to which the simulated candle flame is applied NOTE See 5.2

39、for the criteria. 4 Warning for users If the individual item has an outer housing having a mass of more than 300 g of combustible material, of which at least part is within a candle flame accessible area, users shall be informed about the risks associated with the burning of candles in the user inst

40、ructions, available with the equipment, or on a warning label on the equipment. If a symbol is used, it shall be in accordance with the example shown below (currently IEC 60417-Pr10-040) and it shall have a minimum height of 10 mm. NOTE The colours of ISO 3864 do not apply to the symbol. If text is

41、used, it shall have the following or similar wording, with a minimum letter height of 3 mm: PD CLC/TS 62441:2013 8 TS 62441 IEC:2011 WARNING To prevent the spread of fire, keep candles or other open flames away from this product at all times. Compliance is checked by inspection. 5 Control of fire gr

42、owth 5.1 General An individual item, if accidentally subjected to a candle flame, shall reduce the likelihood of spread of fire to adjacent items by limiting the fire growth. An individual item having a candle flame accessible area is considered to comply if it meets the requirements of either a), b

43、), or c) below: a) the total mass of the combustible materials located at the outer surface does not exceed 300 g; or b) the combustible material used in candle flame accessible areas is made of V-1 class material; or NOTE 1 Application of the test flame in a horizontal position (see Figure 2) resul

44、ts in a portion of the flame extending above the centre-line application point, which makes it necessary to consider the areas immediately above the centre-line with respect to their flame class properties or their combustibility see also 5.1c) below. c) the combustible materials used in candle flam

45、e accessible areas do not exhibit flaming for more than 3 min as determined by the test of 5.4. Individual parts located in a candle flame accessible area, and made of combustible material rated less than V-1 class material are exempt from b) and c) above provided that the mass of combustible materi

46、al rated less than V-1 class material of each individual part does not exceed 25 g, and the total mass for all such individual parts does not exceed 10 % of the total mass of the combustible material, with a limit of 300 g, located at the exterior surface of the individual item. NOTE 2 Examples of s

47、uch individual parts are knobs, switches, covers, and dial faces. When determining the 300 g mass of the exterior enclosure or the mass of the individual part, only the mass between the outermost surface and a plane that is in line with the inner surface of the exterior enclosure needs to be taken i

48、nto account. Wood and wood-based material with a thickness of at least 6 mm is considered to fulfill the V-1 class material requirement. NOTE 3 It is recommended that the quantity of environmentally unfriendly flame retardant materials should be kept as low as possible. Compliance is checked by insp

49、ection, measurement and, if necessary, by the test of 5.4. 5.2 Determination of candle flame accessible areas Candle flame accessible areas are considered to be the following exterior surfaces of an individual item: PD CLC/TS 62441:2013TS 62441 IEC:2011 9 surfaces that are vertical to or overhanging the supporting surface and are located between 10 mm and 150 mm directly above the supporting surface (see Figures 1a and 1b ); and the bottom of the individual item, unless it rest