1、Fire hazard testingPart 1-21: Guidance for assessing the fire hazard of electrotechnical products Ignitability Summary and relevance of test methodsBS EN 60695-1-21:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK i
2、mplementation of EN 60695-1-21:2016. It isidentical to IEC 60695-1-21:2016. It supersedes PD IEC/TR 60695-1-21:2008which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/89, Fire hazard testing.A list of organizations represented on this committee can be o
3、btained 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 Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 87360 7ICS 13.220.40; 29.020Compl
4、iance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60695-1-21:2016EU
5、ROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60695-1-21 November 2016 ICS 29.020; 13.220.40 English Version Fire hazard testing - Part 1-21: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - Summary and relevance of test methods (IEC 60695-1-21:2016) Essais r
6、elatifs aux risques du feu - Partie 1-21: Lignes directrices pour lvaluation des risques du feu des produits lectrotechniques - Allumabilit - Rsum et pertinence des mthodes dessais (IEC 60695-1-21:2016) Prfungen zur Beurteilung der Brandgefahr - Teil 1-21: Anleitung zur Beurteilung der Brandgefahr v
7、on elektrotechnischen Erzeugnissen - Entzndbarkeit - Zusammenfassung und Bedeutung der Prfverfahren (IEC 60695-1-21:2016) This European Standard was approved by CENELEC on 2016-10-12. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giv
8、ing 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 member. This European Standard exists in three
9、 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 CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electr
10、otechnical 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 Netherlands, Norway, Poland, Portugal, Roma
11、nia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussel
12、s 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60695-1-21:2016 E BS EN 60695-1-21:2016EN 60695-1-21:2016 2 European foreword The text of document 89/1336/FDIS, future edition 1 of IEC 60695-1-21, prepared by IEC/TC 89 “Fire
13、hazard testing“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60695-1-21:2016. 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 (dop) 2017-07-12 l
14、atest date by which the national standards conflicting with the document have to be withdrawn (dow) 2019-10-12 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or
15、 all such patent rights. Endorsement notice The text of the International Standard IEC 60695-1-21:2016 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: ISO 11357 (Seri
16、es) NOTE Harmonized as EN ISO 11357 (Series). ISO 4589-1:1996 NOTE Harmonized as EN ISO 4589-1:1999. ISO 4589-2:1996 NOTE Harmonized as EN ISO 4589-2:1999. ISO 4589-3:1996 NOTE Harmonized as EN ISO 4589-3:1999. BS EN 60695-1-21:2016EN 60695-1-21:2016 3 Annex ZA (normative) Normative references to in
17、ternational 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, the latest editio
18、n 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 in this annex is
19、available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60695-1-20 - Fire hazard testing - Part 1-20: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - General guidance EN 60695-1-20 - IEC 60695-1-30 - Fire hazard testing - Part 1-30: Guidance for ass
20、essing the fire hazard of electrotechnical products - Preselection testing process - General guidelines EN 60695-1-30 - IEC 60695-4 2012 Fire hazard testing - Part 4: Terminology concerning fire tests for electrotechnical products EN 60695-4 2012 IEC Guide 104 - The preparation of safety publication
21、s and the use of basic safety publications and group safety publications - - ISO 13943 2008 Fire safety - Vocabulary EN ISO 13943 2010 ISO/IEC Guide 51 - Safety aspects - Guidelines for their inclusion in standards - - BS EN 60695-1-21:2016 2 IEC 60695-1-21:2016 IEC 2016 CONTENTS FOREWORD 3 INTRODUC
22、TION 5 1 Scope .7 2 Normative references 7 3 Terms and definitions 8 4 Summary of published test methods 12 4.1 General 12 4.2 Tests using heated air or electrical heating 12 4.2.1 Determination of ignition temperature using a hot-air furnace, ISO 871 . 12 4.2.2 Differential scanning calorimetry (DS
23、C), ISO 11357 1 . 13 4.3 Tests using radiant heat 14 4.3.1 Heat release rate Cone calorimeter method, ISO 5660-1 4 14 4.3.2 Heat release of insulating liquids, IEC TS 60695-8-3 5 . 15 4.3.3 Standard test method for determining material ignition and flame spread properties, ASTM E 1321 6 . 16 4.3.4 D
24、etermination of the characteristic heat flux for ignition from a non-contacting flame source, IEC TS 60695-11-11 7 . 17 4.4 Oxygen index tests . 17 4.4.1 Oxygen index Ambient temperature test, ISO 4589-2 8 17 4.4.2 Oxygen index Elevated temperature test, ISO 4589-3 10 . 18 4.5 Glowing/hot-wire based
25、 test methods 20 4.5.1 Glow wire tests, IEC 60695-2-11 14, IEC 60695-2-12 15 and IEC 60695-2-13 16 . 20 4.5.2 Hot wire coil ignitability test, IEC 60695-2-20 and ASTM D 3874 17 22 4.6 Flame tests . 23 4.6.1 Needle flame test, IEC 60695-11-5 18 23 4.6.2 50 W Horizontal and vertical flame test methods
26、, IEC 60695-11-10 19 500 W flame test methods, IEC 60695-11-20 20 . 24 4.6.3 1 kW nominal pre-mixed flame, IEC 60695-11-2 23 25 4.6.4 Vertical and 60 tests for aircraft components, FAR 25 25 25 4.7 Tests using an electrical arc 26 4.7.1 Tracking index tests, IEC 60112 26, ASTM D 3638 27 26 4.7.2 Hig
27、h-Current Arc Ignition (HAI), UL 746A Sec. 32 30 . 28 4.7.3 High-voltage arc resistance to ignition (HVAR), UL 746A Sec. 33 31 28 Annex A (informative) Applicability of test methods 30 A.1 Applicability of test methods 30 Bibliography . 32 Table 1 Main differences between IEC 60112 and ASTM D 3638 2
28、7 Table A.1 Applicability of test methods (1 of 2) . 30 BS EN 60695-1-21:2016IEC 60695-1-21:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIRE HAZARD TESTING Part 1-21: Guidance for assessing the fire hazard of electrotechnical products Ignitability Summary and relevance of test method
29、s 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 international co-operation on all questions concerning standardization in t
30、he 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 referred to as “IEC Publication(s)”). Their preparation is entrusted
31、 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 in this preparation. IEC collaborates closely with the Internation
32、al 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 possible, an international consensus of opinion on the relevant subjects since each t
33、echnical 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. While all reasonable efforts are made to ensure that the technical content of IEC P
34、ublications 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 to apply IEC Publications transparently to the maximum extent possible in their
35、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 attestation of conformity. Independent certification bodies provide conformity assessment
36、 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 this publication. 7) No liability shall attach to IEC or its directors, employees,
37、 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 indirect, or for costs (including legal fees) and expenses arising out of the publ
38、ication, 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 the correct application of this publication. 9) Attention is drawn to the possib
39、ility 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 60695-1-21 has been prepared by IEC technical committee 89: Fire hazard testing. The text of this s
40、tandard is based on the following documents: FDIS Report on voting 89/1336/FDIS 89/1339/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. This publication has been drafted in accordance with the ISO/IEC Directives,
41、 Part 2. BS EN 60695-1-21:2016 4 IEC 60695-1-21:2016 IEC 2016 It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51. This first edition of IEC 60695-1-21 cancels and replaces the first edition of IEC TR 60695-1-21 published in 2008. It constitutes a te
42、chnical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Change from a TR to an international standard; b) Modified Introduction; c) Modified Scope; d) Updated normative references; e) Updated terms and definitions; f) Updates and n
43、ew text in Clause 4; g) Addition of text concerning ASTM D 3638; h) Updates to Annex A; i) Updates to the bibliography. A list of all the parts in the IEC 60695 series, under the general title Fire hazard testing, can be found on the IEC website. The IEC 60695-1 series, under the general title Fire
44、hazard testing, consists of the following parts: Part 1-10: Guidance for assessing the fire hazard of electrotechnical products General guidelines Part 1-11: Guidance for assessing the fire hazard of electrotechnical products Fire hazard assessment Part 1-12: Guidance for assessing the fire hazard o
45、f electrotechnical products Fire safety engineering Part 1-20: Guidance for assessing the fire hazard of electrotechnical products Ignitability General guidance Part 1-21: Guidance for assessing the fire hazard of electrotechnical products Ignitability Summary and relevance of test methods Part 1-30
46、: Guidance for assessing the fire hazard of electrotechnical products Preselection testing procedures General guidelines Part 1-40: Guidance for assessing the fire hazard of electrotechnical products Insulating liquids The committee has decided that the contents of this publication will remain uncha
47、nged 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 60695-1-21:2016IEC 60695-1-21:2016 IEC 2016 5 INTR
48、ODUCTION Fires are responsible for creating hazards to life and property as a result of the generation of heat (thermal hazard), and also as a result of the production of toxic effluent, corrosive effluent and smoke (non-thermal hazard). Fires start with ignition and then can grow, leading in some c
49、ases to flash-over and a fully developed fire. Ignition resistance is therefore one of the most important parameters of a material to be considered in the assessment of fire hazard. If there is no ignition, there is no fire. For most materials (other than metals and some other elements), ignition occurs in the gas phase. Ignition occurs when combustible vapour, mixed with air, reaches a high enough temperature for exothe
