1、Fire hazard testingPart 8-2: Heat release Summary and relevance of test methodsBS EN 60695-8-2:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN 60695-8-2:2017. It isidentical to IEC 60695-8-2:20
2、16.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 obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users ar
3、e responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 81875 2ICS 13.220.40; 29.020Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority
4、of theStandards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60695-8-2:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60695-8-2 March 2017 ICS 13.220.40; 29.020 English Version Fire hazard testing - Par
5、t 8-2: Heat release - Summary and relevance of test methods (IEC 60695-8-2:2016) Essais relatifs aux risques du feu - Partie 8-2: Dgagement de chaleur - Rsum et pertinence des mthodes dessais (IEC 60695-8-2:2016) Prfungen zur Beurteilung der Brandgefahr - Teil 8-2: Wrmefreisetzung - Zusammenfassung
6、und Anwendbarkeit von Prfverfahren (IEC 60695-8-2:2016) This European Standard was approved by CENELEC on 2016-12-21. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard witho
7、ut 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 official versions (English, French, German). A version in any oth
8、er 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 electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cypr
9、us, 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, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turke
10、y 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 Brussels 2017 CENELEC All rights of exploitation in any form and
11、by any means reserved worldwide for CENELEC Members. Ref. No. EN 60695-8-2:2017 E BS EN 60695-8-2:2017EN 60695-8-2:2017 2 European foreword The text of document 89/1343/FDIS, future edition 1 of IEC 60695-8-2, prepared by IEC/TC 89 “Fire hazard testing“ was submitted to the IEC-CENELEC parallel vote
12、 and approved by CENELEC as EN 60695-8-2:2017. 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) 2017-09-21 latest date by which the national standards conflicting with the
13、 document have to be withdrawn (dow) 2019-12-21 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 all such patent rights. Endorsement notice The text of the Int
14、ernational Standard IEC 60695-8-2:2016 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 1716:2010 NOTE Harmonized as EN ISO 1716:2010 (not modified). ISO 1182 NOTE
15、 Harmonized as EN ISO 1182. IEC 60332-3-10 NOTE Harmonized as EN 60332-3-10. IEC 60695-1-11 NOTE Harmonized as EN 60695-1-11. BS EN 60695-8-2:2017EN 60695-8-2:2017 3 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following d
16、ocuments, 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 edition of the referenced document (including any amendments) applies. NOTE 1 When an Interna
17、tional 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 available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60695-1-10 - Fire
18、 hazard testing - Part 1-10: Guidance for assessing the fire hazard of electrotechnical products - General guidelines EN 60695-1-10 - IEC 60695-4 2012 Fire hazard testing - Part 4: Terminology concerning fire tests for electrotechnical products EN 60695-4 2012 IEC 60695-8-1 - Fire hazard testing - P
19、art 8-1: Heat release - General guidance EN 60695-8-1 - IEC Guide 104 - The preparation of safety publications and the use of basic safety publications and group safety publications - - ISO/IEC Guide 51 - Safety aspects - Guidelines for their inclusion in standards - - ISO 13943 2008 Fire safety - V
20、ocabulary EN ISO 13943 2010 BS EN 60695-8-2:2017 2 IEC 60695-8-2:2016 IEC 2016 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms and definitions 7 4 Summary of test methods 11 4.1 General . 11 4.2 Measurement of complete combustion 11 4.2.1 The bomb calorimeter 11 4.2
21、.2 Purpose and principle 11 4.2.3 Test specimen . 11 4.2.4 Test procedure 11 4.2.5 Repeatability and reproducibility 12 4.2.6 Relevance of test data . 12 4.3 Measurements of incomplete combustion 12 4.3.1 Cone calorimeter . 12 4.3.2 Microscale calorimetry . 13 4.3.3 The Ohio State University calorim
22、eter 14 4.3.4 Fire propagation apparatus (ISO 12136) 15 4.3.5 Single Burning Item (SBI) test 16 4.3.6 Vertical cable ladder tests . 17 4.3.7 Horizontal cable ladder test . 20 4.3.8 Open calorimetry fire tests . 22 5 Overview of test methods 22 Bibliography 24 Table 1 Summary and comparison of vertic
23、al cable ladder tests 20 Table 2 Overview of heat release test methods 22 BS EN 60695-8-2:2017IEC 60695-8-2:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIRE HAZARD TESTING Part 8-2: Heat release Summary and relevance of test methods FOREWORD 1) The International Electrotechnical Comm
24、ission (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 the electrical and electronic fields. To this end and
25、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 to technical committees; any IEC National Committee
26、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 International Organization for Standardization (ISO) in accordan
27、ce 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 technical committee has representation from all intere
28、sted 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 Publications is accurate, IEC cannot be held responsib
29、le 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 national and regional publications. Any divergence be
30、tween 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 services and, in some areas, access to IEC marks of
31、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, servants or agents including individual experts and
32、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 publication, use of, or reliance upon, this IEC Publicati
33、on 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 possibility that some of the elements of this IEC Publicati
34、on may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60695-8-2 has been prepared by IEC technical committee 89: Fire hazard testing. This first edition cancels and replaces IEC TR 60695-8-2 published in 20
35、08. This edition constitutes a technical revision. The text of this International Standard is based on the following documents: FDIS Report on voting 89/1343/FDIS 89/1349/RVD Full information on the voting for the approval of this International Standard can be found in the report on voting indicated
36、 in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. BS EN 60695-8-2:2017 4 IEC 60695-8-2:2016 IEC 2016 It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51. A list of all the parts in the IEC 60695 se
37、ries, under the general title Fire hazard testing, can be found on the IEC website. This International Standard is to be used in conjunction with IEC 60695-8-1. IEC 60695-8 consists of the following parts: Part 8-1: Heat release General guidance Part 8-2: Heat release Summary and relevance of test m
38、ethods The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, the document will be reconfirmed, withdrawn, replaced by a revised
39、 edition, or amended. BS EN 60695-8-2:2017IEC 60695-8-2:2016 IEC 2016 5 INTRODUCTION In the design of an electrotechnical product, the risk of fire and the potential hazards associated with fire need to be considered. In this respect the objective of component, circuit and equipment design, as well
40、as the choice of materials, is to reduce the risk of fire to a tolerable level even in the event of reasonably foreseeable (mis)use, malfunction or failure. IEC 60695-1-10, IEC 60695-1-11, and IEC 60695-1-12 provide guidance on how this is to be accomplished. Fires involving electrotechnical product
41、s can also be initiated from external non-electrical sources. Considerations of this nature are dealt with in an overall fire hazard assessment. The aim of the IEC 60695 series of standards is to save lives and property by reducing the number of fires or reducing the consequences of the fire. This c
42、an be accomplished by: trying 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; trying to minimise flame spread beyond the products enclosure and to m
43、inimise the harmful effects of fire effluents including heat, smoke, and toxic or corrosive combustion products. Fires are responsible for creating hazards to life and property as a result of the generation of heat (thermal hazard), toxic and/or corrosive compounds and obscuration of vision due to s
44、moke. The severity of a fire increases as the heat released increases, possibly leading to a flashover fire. One of the most important measurements in fire testing is the measurement of heat release and it is used as an important factor in the determination of fire hazard; it is also used as one of
45、the parameters in fire safety engineering calculations. The measurement and use of heat release data, together with other fire test data, can be used to reduce the likelihood of (or the effects of) fire, even in the event of foreseeable abnormal use, malfunction or failure of electrotechnical produc
46、ts. When a material is heated by some external source, fire effluent can be generated and can form a mixture with air that can ignite and initiate a fire. The heat released in the process is carried away by the fire effluent-air mixture, radiatively lost or transferred back to the solid material, to
47、 generate further pyrolysis products, thus continuing the process. Heat may also be transferred to other nearby products, which may burn, and then release additional heat and fire effluent. The rate at which thermal energy is released in a fire is defined as the heat release rate. Heat release rate
48、is important because of its influence on flame spread and on the initiation of secondary fires. Other characteristics are also important, such as ignitability, flame spread and other side effects of the fire (see the IEC 60695 series of standards). BS EN 60695-8-2:2017 6 IEC 60695-8-2:2016 IEC 2016
49、FIRE HAZARD TESTING Part 8-2: Heat release Summary and relevance of test methods 1 Scope This part of IEC 60695-8 presents a summary of published test methods that are relevant to the determination of the heat released in fire tests on electrotechnical products or materials from which they are formed. It represents the current state of the art of the test methods and, where available, includes special observations on their relevance and use. The list of test methods is not to
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