BS EN 60695-4-2012 Fire hazard testing Terminology concerning fire tests for electrotechnical products《着火危险试验 电工技术产品着火试验的相关术语》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFire hazard testingPart 4: Terminology concerning fire tests for electrotechnical productsBS EN 60695-4:2012National forewordThis British Standard is the UK implementation of EN

2、60695-4:2012. It is identical to IEC 60695-4:2012. It supersedes BS EN 60695-4:2006,which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/89, Fire hazard testing.A list of organizations represented on this committee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 secr

3、etary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012 ISBN 978 0 580 71773 4 ICS 01.040.13; 29.020Compliance with a British Standa

4、rd cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60695-4:2012EUROPEAN STANDARD EN 60695-4 NORME

5、 EUROPENNE EUROPISCHE NORM August 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in

6、any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60695-4:2012 E ICS 01.040.13; 29.020 Supersedes EN 60695-4:2006English version Fire hazard testing - Part 4: Terminology concerning fire tests for electrotechnical products (IEC 60695-4:2012) Essais relatifs aux risques du

7、 feu - Partie 4: Terminologie relative aux essais au feu pour les produits lectrotechniques(CEI 60695-4:2012) Prfungen zur Beurteilung der Brandgefahr - Teil 4: Terminologie der Brandprfungen elektrotechnischer Produkte (IEC 60695-4:2012) This European Standard was approved by CENELEC on 2012-06-13.

8、 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 without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained

9、 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 other language made by translation under the responsibility of a CENELEC member into its own language and notified to th

10、e CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hu

11、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60695-4:2012EN 60695-4:2012 Foreword The text of document 89/1098/FDIS, future edition 4 of I

12、EC 60695-4, prepared by IEC/TC 89 “Fibre hazard testing“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60695-4:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standar

13、d or by endorsement (dop) 2013-03-13 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-06-13 This document supersedes EN 60695-4:2006. EN 60695-4:2012 includes the following significant technical changes with respect to EN 60695-4:2006: - the t

14、erms and definitions that are not specifically electrotechnical and that are either identical or equivalent to those in EN ISO 13943:2010 have been deleted; - the terms and definitions that are specifically electrotechnical and that are in EN ISO 13943:2010 have been included for the convenience of

15、the user; - some new terms have been included. 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 Inte

16、rnational Standard IEC 60695-4:2012 was approved by CENELEC as a European Standard without any modification. BS EN 60695-4:2012EN 60695-4:2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or i

17、n 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 When an international publication has be

18、en modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC Guide 104 2010 The preparation of safety publications and the use of basic safety publications and group safety publications - - IEC 60050 Series International Electrotechnical

19、Vocabulary - - ISO 13943 2008 Fire safety - Vocabulary EN ISO 13943 2010 ISO/IEC Guide 51 1999 Safety aspects - Guidelines for their inclusion in standards - - BS EN 60695-4:201260695-4 IEC:2012 CONTENTS 1 Scope . . 5 2 Normative references . 5 3 Terms and definitions . 5 3.1 Use of the term “item”.

20、 5 3.2 Other terms and definitions . 5 BS EN 60695-4:201260695-4 IEC:2012 5 FIRE HAZARD TESTING Part 4: Terminology concerning fire tests for electrotechnical products 1 Scope The terms and definitions in this standard are applicable to fire tests for electrotechnical products. This basic safety pub

21、lication 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 committee is, wherever applicable, to make use of basic safety publications in the prepar

22、ation 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 documents, in whole or in part, are normatively referenced in th

23、is 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. IEC Guide 104:2010, The preparation of safety publications and the use of basic safet

24、y publications and group safety publications IEC 60050, International Electrotechnical vocabulary ISO 13943:2008, Fire safety Vocabulary ISO/IEC Guide 51:1999, Safety aspects Guidelines for their inclusion in standards 3 Terms and definitions 3.1 Use of the term “item” For the purposes of this docum

25、ent, the English term “item” is used in a general meaning to represent any single object or assembly of objects, and may cover, for example, material, product, assembly, structure or building, as required in the context of any individual definition. If the “item” under consideration is a test specim

26、en then the term “test specimen” is used. 3.2 Other terms and definitions For the purposes of this document, the following terms and definitions apply. NOTE Terms and definitions that are specifically electrotechnical and that are in ISO 13943:2008 have been included below for the convenience of the

27、 user. BS EN 60695-4:2012 6 60695-4 IEC:2012 3.2.1 abnormal heat electrotechnical heat that is additional to that resulting from use under normal conditions, up to and including that which causes a fire SOURCE: ISO 13943:2008, definition 4.1 3.2.2 arc resistance electrotechnical ability of an electr

28、ically insulating material to resist the influence of an electric arc, under specified conditions Note 1 to entry: The arc resistance is identified by the length of the arc, the absence or presence of a conducting path and the burning or damage of the test specimen. SOURCE: ISO 13943:2008, definitio

29、n 4.13 3.2.3 arc tracking tracking electrotechnical progressive formation of conducting paths that are produced on the surface and/or within a solid insulating material, due to the combined effects of electric stress and electrolytic contamination SEE: tracking resistance (3.2.27) SOURCE: ISO 13943:

30、2008, definition 4.342 3.2.4 confirmatory test procedure intended as a diagnostic indicator to reveal anomalous behaviour or conditions in a test flame, burner or associated hardware 3.2.5 enclosure housing affording the type and degree of protection suitable for the intended application SOURCE: IEC

31、 60050-195:1998, 195-02-35 3.2.6 enclosure electrotechnical external casing protecting the electrical and mechanical parts of apparatus Note 1 to entry: The term excludes cables. SOURCE: ISO 13943:2008, definition 4.78 3.2.7 end product product that is ready for use without modification NOTE 1 to en

32、try: An end product can be a component of another end product. 3.2.8 end product fire test fire test that is carried out on an end product and is described in a relevant specification. Note 1 to entry: End product fire tests may be small-scale, intermediate-scale, large-scale or real-scale. BS EN 60

33、695-4:201260695-4 IEC:2012 7 3.2.9 extent of combustion electrotechnical maximum length of a test specimen that has been destroyed by combustion or pyrolysis, under specified test conditions, excluding any region damaged only by deformation SOURCE: ISO 13943:2008, definition 4.91 3.2.10 fire hazard

34、assessment evaluation of the possible causes of fire, the possibility and nature of subsequent fire growth, and the possible consequences of fire 3.2.11 flame stabilizer assembly normally fitted to the top of a standard laboratory Bunsen or Tirrill burner intended to mitigate the destabilizing effec

35、t of the turbulent mixing of flame gases with the ambient air, by providing an intervening layer of gas having an intermediate velocity between the ambient still air and the faster flame gases 3.2.12 flameproof electrotechnical class of methods used to prevent the ignition, caused by electrical equi

36、pment, of explosive atmospheres SEE: flameproof enclosure (3.2.13) Note 1 to entry: The term is deprecated in other applications. SOURCE: ISO 13943:2008, definition 4.145 3.2.13 flameproof enclosure electrotechnical enclosure that can withstand the pressure developed during an explosion of the atmos

37、phere within the enclosure and can prevent the transmission of the explosion to the atmosphere surrounding the enclosure SOURCE: ISO 13943:2008, definition 4.146 3.2.14 flashover electrotechnical electrical discharge that occurs over the surface of a solid dielectric in a gaseous or liquid medium SO

38、URCE: ISO 13943:2008, definition 4.157 3.2.15 incident heat flux heat flux received by the surface of a test specimen 3.2.16 insignificant mass insufficient combustible material to constitute a fire hazard Note 1 to entry A default value is 2 g, but product TCs may assign a different value appropria

39、te to the product type and scale. BS EN 60695-4:2012 8 60695-4 IEC:2012 3.2.17 intrinsically safe circuit electrotechnical circuit in which any spark or thermal effect is incapable of causing ignition of a mixture of flammable or combustible material in air under specified test conditions Note 1 to

40、entry: The specified test conditions include normal operation and specified fault conditions. SOURCE: ISO 13943:2008, definition 4.201 3.2.18 intrinsically safe system electrotechnical assembly in which all electrical circuits that can be used in hazardous (classified) locations are intrinsically sa

41、fe circuits SOURCE: ISO 13943:2008, definition 4.202 3.2.19 lethal toxic potency toxic potency where the specific toxic effect is death SEE: lethal concentration 50, LC50(ISO 13943:2008, 4.207) lethal exposure dose 50, LCt50(ISO 13943:2008, 4.208) 3.2.20 minimum critical relative humidity electrotec

42、hnical relative humidity that causes leakage current to exceed a defined level under specified test conditions SOURCE: ISO 13943:2008, definition 4.229 3.2.21 preselection process of assessing and choosing candidate materials, components or subassemblies for making an end product 3.2.22 qualitative

43、fire test fire test which is either: a) a pass/fail test; or b) a test which categorizes the behaviour of the test specimen by determining its position in a rank order of performance 3.2.23 quantitative fire test fire test which takes into account the circumstances of product use in which the test c

44、onditions are based on, or are relatable to, the circumstances of use of the test specimen, and which measures a parameter or parameters, expressed in well defined terms and using rational scientific units, which can be used in the quantitative assessment of fire risk 3.2.24 self-heating electrotech

45、nical heat generated by a powered electrotechnical product resulting in a rise in temperature in the product SOURCE: ISO 13943:2008, definition 4.288 3.2.25 small part part with a dimension less than the minimum specified for the relevant test method BS EN 60695-4:201260695-4 IEC:2012 9 3.2.26 spark

46、, noun electrotechnical luminous discharge resulting from the dielectric breakdown of a gas between two electrodes SOURCE: ISO 13943:2008, definition 4.300 3.2.27 tracking resistance electrotechnical ability of a material to withstand a test voltage, under specified conditions, without tracking and

47、without the occurrence of flame SOURCE: ISO 13943:2008, definition 4.343 _ BS EN 60695-4:2012This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and se

48、rvices. It presents the UK view on standards in Europe and at the international level. BSI is incorporated by Royal Charter. British Standards and other standardisation products are published by BSI Standards Limited.British Standards Institution (BSI)raising standards worldwideBSI389 Chiswick High

49、Road London W4 4AL UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards and PASs are periodically updated by amendment or revision. Users of British Standards and PASs should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using British S