1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFire hazard testingPart 1-11: Guidance for assessing the fire hazard of electrotechnical products Fire hazard assessmentBS EN 60695-1-11:2011Copyright European Committee for Elec
2、trotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-National forewordThis British Standard is the UK implementation of EN 60695-1-11:2011. It is identical to IEC 60695-1-11:2010. Together with BS EN
3、 60695-1-10:2010, it supersedes BS EN 60695-1-1:2000, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/89, Fire hazard testing.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does no
4、t purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 53977 0 ICS 13.220.40; 29.020Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the autho
5、rity of the Standards Policy and Strategy Committee on 31 July 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60695-1-11:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduc
6、tion or networking permitted without license from IHS-,-,-EUROPEAN STANDARD EN 60695-1-11 NORME EUROPENNE EUROPISCHE NORM October 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Mana
7、gement 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 60695-1-11:2010 E ICS 13.220.40; 29.020 Supersedes EN 60695-1-1:2000 (partially)English version Fire hazard testing - Part 1-1
8、1: Guidance for assessing the fire hazard of electrotechnical products - Fire hazard assessment (IEC 60695-1-11:2010) Essais relatifs aux risques du feu - Partie 1-11: Lignes directrices pour lvaluation des risques du feu des produits lectrotechniques - Evaluation des risques du feu (CEI 60695-1-11:
9、2010) Prfungen zur Beurteilung der Brandgefahr - Teil 1-11: Anleitung zur Beurteilung der Brandgefahr von elektrotechnischen Erzeugnissen - Beurteilung der Brandgefahr (IEC 60695-1-11:2010) This European Standard was approved by CENELEC on 2010-10-01. CENELEC members are bound to comply with the CEN
10、/CENELEC Internal Regulations which stipulate the conditions 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
11、any CENELEC member. This European Standard exists in 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 v
12、ersions. CENELEC members are the national electrotechnical 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, Portu
13、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 60695-1-11:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN
14、60695-1-11:2010 Foreword The text of document 89/991A/FDIS, future edition 1 of IEC 60695-1-11, prepared by IEC TC 89, Fire hazard testing, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60695-1-11 on 2010-10-01. This European Standard partially supersedes EN 60695-
15、1-1:2000. It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51. This standard is to be used in conjunction with EN 60695-1-10. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN an
16、d CENELEC shall not be held responsible for identifying any or all such patent rights. 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) 2011-07-01 latest date by which the nati
17、onal standards conflicting with the EN have to be withdrawn (dow) 2013-10-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60695-1-11:2010 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibli
18、ography, the following notes have to be added for the standards indicated: IEC 61386-21:2002 NOTE Harmonized as EN 61386-21:2004 (not modified). IEC/TS 60695-7-3 NOTE Harmonized as EN 60695-7-3. IEC 60695-4:2005 NOTE Harmonized as EN 60695-4:2006 (not modified). _ BS EN 60695-1-11:2011Copyright Euro
19、pean Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN 60695-1-11:2010 Annex ZA (normative) Normative references to international publications with their corresponding Europea
20、n 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. NOTE When an international publica
21、tion has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60695-1-10 2009 Fire hazard testing - Part 1-10: Guidance for assessing the fire hazard of electrotechnical products - General guidelines EN 60695-1-10 2010 IEC 60695
22、-1-21 2008 Fire hazard testing - Part 1-21: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - Summary and relevance of test methods - - IEC/TS 60695-5-2 2002 Fire hazard testing - Part 5-2: Corrosion damage effects of fire effluent - Summary and relevance of test m
23、ethods - - IEC/TS 60695-6-2 2005 Fire hazard testing - Part 6-2: Smoke obscuration - Summary and relevance of teest methods - - IEC/TR 60695-7-2 2002 Fire hazard testing - Part 7-2: Toxicity of fire effluent - Summary and relevance of test methods - - IEC/TR 60695-8-2 2008 Fire hazard testing - Part
24、 8-2: Heat release - Summary and relevance of test methods - - IEC/TS 60695-9-2 2005 Fire hazard testing - Part 9-2: Surface spread of flame - Summary and relevance of test methods - - IEC Guide 104 1997 The preparation of safety publications and the use of basic safety publications and group safety
25、 publications - - ISO/IEC Guide 51 1999 Safety aspects - Guidelines for their inclusion in standards - - ISO 13943 2008 Fire safety - Vocabulary - - ISO/TR 13387 Series Fire safety engineering - - BS EN 60695-1-11:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS
26、under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-60695-1-11 IEC:2010 CONTENTS INTRODUCTION. 6 1 Scope.7 2 Normative references 7 3 Terms and definitions 8 4 Elements of fire hazard assessment .14 4.1 Ignition sources . 14 4.2 Fire hazard. 1
27、4 4.3 Fire risk .14 4.4 Fire hazard assessment .14 5 Fire hazard tests . 15 6 The fire hazard assessment process . 15 6.1 General .15 6.2 Definition of the product range and the circumstances of use . 16 6.3 Identification and analysis of fire scenarios . .16 6.3.1 General . 16 6.3.2 Qualitative des
28、cription of the fire scenario .17 6.3.3 Quantitative analysis of the fire scenario . 18 6.3.4 Simple hypothetical fire scenarios . .19 6.4 Selection of criteria for acceptable fire scenario outcomes 19 6.5 Performance requirements . .20 6.6 Interpretation of test results. 20 6.7 Consequential testin
29、g. 20 7 Scope and limitations of the fire hazard assessment 20 8 Fire test requirements and specifications.21 Annex A (informative) Calculation of acceptable toxic yield values for an electrical insulation material, based on a simple hypothetical fire scenario . . 26 Annex B (informative) Use of rig
30、id plastic conduit A fire hazard assessment . 31 Bibliography. 43 Figure B.1 Schematic of conduit installation38 Figure B.2 Corridor upper layer temperature (concrete wall) . 38 Figure B.3 Corridor upper layer temperature (gypsum wall board) 39 Figure B.4 Flux measured at the conduit 2 m away (concr
31、ete wall) 39 Figure B.5 Flux measured at the conduit 2 m away (gypsum wall) 40 Figure B.6 Comparative mass loss rates of furniture and conduit (concrete wall) . .40 Figure B.7 Comparative mass loss rates of furniture and conduit (gypsum wall board). 41 Figure B.8 Relative increase of toxicity due to
32、 exposed conduit (concrete wall) .41 Figure B.9 Relative increase of toxicity due to exposed conduit (gypsum wall board) .42 Table A.1 Irritant F values and calculated X values for the defined fire scenario . 27 Table A.2 Asphyxiant X values calculated for the defined fire scenario. .28 Table A.3 In
33、capacitation times for hydrogen cyanide. . 29 BS EN 60695-1-11:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-60695-1-11 IEC:2010 Table A.4 Multiplicati
34、on factors for carbon dioxide . .30 Table B.1 Summary of fire scenario information .33 Table B.2 Time of occurrence of highly-hazardous conditions in building corridors 36 BS EN 60695-1-11:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELE
35、CNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 6 60695-1-11 IEC:2010 INTRODUCTION In the design of any electrotechnical product the risk of fire and the potential hazards associated with fire need to be considered. In this respect, the objective of component, ci
36、rcuit and equipment design as well as the choice of materials is to reduce to acceptable levels the potential risks of fire even in the event of foreseeable abnormal use, malfunction or failure. This standard, together with its companion, IEC 60695-1-10, provides guidance on how this is to be accomp
37、lished. The primary aims are to prevent ignition caused by an electrically energised component part and, in the event of ignition, to confine any resulting fire within the bounds of the enclosure of the electrotechnical product. Secondary aims include the minimisation of any flame spread beyond the
38、products enclosure and the minimisation of harmful effects of fire effluents including heat, smoke, and toxic or corrosive combustion products. Fires involving electrotechnical products can also be initiated from external non-electrical sources. Considerations of this nature are dealt with in the ov
39、erall fire hazard assessment. Fire hazard assessment is used to identify the kinds of fire events (fire scenarios) which will be associated with the product, to establish how the measurable fire properties of the product are related to the outcome of those events, and to establish test methods and p
40、erformance requirements for those properties which will either result in a tolerable fire outcome or eliminate the event altogether. Annex A demonstrates a relatively simple fire hazard assessment process as applied to the toxic hazard from a burning material. Annex B demonstrates a more complex fir
41、e hazard assessment process as applied to an electrotechnical product: rigid plastic conduit. Attention is drawn to the principles in IEC Guide 104, and to the role of committees with horizontal safety functions and group safety functions. BS EN 60695-1-11:2011Copyright European Committee for Electr
42、otechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-60695-1-11 IEC:2010 7 FIRE HAZARD TESTING Part 1-11: Guidance for assessing the fire hazard of electrotechnical products Fire hazard assessment 1 Sc
43、ope This part of IEC 60695-1 provides guidance for assessing the fire hazard of electrotechnical products and for the resulting development of fire hazard testing as related directly to harm to people, animals or property. For the purposes of this standard, product means complete electrotechnical eq
44、uipments, their parts (including components) and electrical insulating materials. It outlines a hazard-based process to identify appropriate fire test methods and performance criteria for products. The principles of the methodology are to identify fire events (fire scenarios) which will be associate
45、d with the product, to establish how the measurable fire properties of the product are related to the possible occurrence and outcome of those events, and to establish test methods and performance requirements for those properties which will either result in a tolerable fire outcome or eliminate the
46、 event altogether. This standard is intended as guidance to IEC committees, and should be used with respect to their individual applications. The actual implementation of this standard remains the responsibility of each product committee, according to the minimum acceptable fire safety in its applic
47、ation field and taking into account the feedback from experience. This basic safety publication is intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. One of the responsibilities of a technical co
48、mmittee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the relevant publications. 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 of the referenced document (including any amendments) appli
