1、BSI Standards PublicationFire hazard testing Part 2-12: Glowing/hot-wire based test methods Glow-wire flammability index (GWFI) test method for materialsBS EN 60695-2-12:2010+A1:2014BS EN 60695-2-12:2010+A1:2014National forewordThis British Standard is the UK implementation of EN 60695-2-12:2010+A1:
2、2014. It is identical to IEC 60695-2-12:2010, incorporating amendment 1:2014. It supersedes BS EN 60695-2-12:2010, which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC amen
3、dment. For example, text altered by IEC amendment 1 is indicated by !“.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 not
4、purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 81086 2ICS 13.220.40; 29.020Compliance with a British Standard cannot confer immunity fromle
5、gal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2011.Amendments/corrigenda issued since publicationDate Text affected31 August 2014 Implementation of IEC amendment 1:2014 with CENELEC endorsement A1:2014. Annex ZA updat
6、edBRITISH STANDARDEUROPEAN STANDARD EN 60695-2-1:2010$ NORME EUROPENNE EUROPISCHE NORM June 2014CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 10
7、00 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60695-2-12:2010 E ICS 13.220.40, 29.020 English version Fire hazard testing - Part 2-12: Glowing/hot-wire based test methods - Glow-wire flammability index (GWFI) te
8、st method for materials (IEC 60695-2-12:2010) Essais relatifs aux risques du feu - Partie 2-12: Essais au fil incandescent/chauffant - Mthode dessai dindice dinflammabilit au fil incandescent (GWFI) pour matriaux(CEI 60695-2-12:2010) Prfungen zur Beurteilung der Brandgefahr - Teil 2-12: Prfverfahren
9、 mit dem Glhdraht - Prfung mit dem Glhdraht zur Entflammbarkeit (GWFI) von Werkstoffen (IEC 60695-2-12:2010) This European Standard was approved by CENELEC on 2010-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Euro
10、pean 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 any CENELEC member. This European Standard exists in three official versions (Eng
11、lish, 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 versions. CENELEC members are the national electrotechnical committees of Austria,
12、 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 and the United Kingd
13、om. - 2 - Foreword The text of document 89/1017/FDIS, future edition 2 of IEC 60695-2-12, prepared by IEC TC 89, Fire hazard testing, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60695-2-12 on 2010-12-01. This European Standard supersedes EN 60695-2-12:2001. It ha
14、s 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 60695-2-10 and EN 60695-2-13. This EN 60695-2-12:2010 includes the following significant technical changes with respect to EN 60695-2-12:2001: modified
15、 title; addition of an Introduction; clarification of Scope; expansion of Clause 2: Normative references; definitions added to Clause 3; revision of Clause 4 to alignment with the EN 60695-11 series to introduce guidance on test programs for material variations; clarification of Clause 8: Conditioni
16、ng (now Clause 7); deletion of Clause 9 “Initial measurements”; expansion of Clause 10: Test procedures (now Clause 8); expansion of Clause 11: Observation and measurement (now Clause 9); clarification of Clause 12: Evaluation of test results (now Clause 10); expansion of Clause 13: Test report (now
17、 Clause 11). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and 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 implem
18、ented at national level by publication of an identical national standard or by endorsement (dop) 2011-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-12-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International
19、 Standard IEC 60695-2-12:2010 was approved by CENELEC as a European Standard without any modification. BS EN 60695-2-12:2010+A1:2014 EN 60695-2-12:2010+A1:2014 (E)- 3 - In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60695-1-10 NOTE Ha
20、rmonized as EN 60695-1-10. IEC 60695-1-11 IEC 60695-11 series NOTE Harmonized as EN 60695-1-11. NOTE Harmonized in EN 60695-11 series (not modified). _ The text of document 89/1198/FDIS, future IEC 60695-2-12:2010/A1, prepared by IEC TC 89, Fire hazard testing, was submitted to the IEC-CENELEC paral
21、lel vote and was approved by CENELEC as EN 60695-2-12:2010/A1:2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates w
22、ere 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) DAV + 6 months latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2017-03-19 Endorsement notice The text
23、 of the International Standard IEC 60695-2-12:2010/A1:2014 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: IEC 60695-2-11 NOTE Harmonized as EN 60695-2-11. ISO/IEC 13
24、943:2008 NOTE Harmonized as EN ISO 13943:2010. Foreword to amendment A1BS EN 60695-2-12:2010+A1:2014 EN 60695-2-12:2010+A1:2014 (E)- 4 - Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indis
25、pensable 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 publication has been modified by common modifications, indicated b
26、y (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60695-1-30 2008 Fire hazard testing - Part 1-30: Guidance for assessing the fire hazard of electrotechnical products - Preselection testing process - General guidelines EN 60695-1-30 2008 IEC 60695-2-10 2000 Fire hazard testi
27、ng - Part 2-10: Glowing/hot-wire based test methods - Glow-wire apparatus and common test procedure EN 60695-2-10 2001 IEC 60695-2-13 - Fire hazard testing - Part 2-13: Glowing/hot-wire based test methods - Glow-wire ignition temperature (GWIT) test method for materials EN 60695-2-13 - ISO/IEC Guide
28、 51 Safety aspects - Guidelines for their inclusion in standards - - IEC Guide 104 The preparation of safety publications and the use of basic safety publications and group safety publications - - ISO 291 2008 Plastics - Standard atmospheres for conditioning and testing EN ISO 291 2008 ISO 293 Plast
29、ics - Compression moulding of test specimens of thermoplastic materials EN ISO 293 ISO 294 Series Plastics - Injection moulding of test specimens of thermoplastic materials - Part 1: General principles, and moulding of multipurpose and bar test specimens EN ISO 294 Series ISO 295 Plastics - Compress
30、ion moulding of test specimens of thermosetting materials EN ISO 295 - - - - -BS EN 60695-2-12:2010+A1:2014 EN 60695-2-12:2010+A1:2014 (E) 2 CONTENTS INTRODUCTION.5 1 Scope.6 2 Normative references6 3 Terms and definitions .7 4 Test specimens 8 4.1 Test specimen preparation.8 4.2 Test specimen dimen
31、sions.8 4.3 Testing ranges in formulations .8 4.3.1 General .8 4.3.2 Density, melt flows and filler/reinforcement 9 4.3.3 Colour .9 5 Apparatus.9 6 Temperature measuring system verification 9 7 Conditioning and test conditions9 7.1 Conditioning of test specimens 9 7.2 Conditioning of the wrapping ti
32、ssue and the wooden board.9 7.3 Testing conditions9 8 Test procedure .10 8.1 General .10 8.2 Initial test temperatures .10 8.3 Test temperatures .10 9 Observations and measurements11 9.1 General .11 9.2 Initial observations.11 9.3 Test observations 11 10 Evaluation of test results.11 10.1 Test crite
33、ria .11 10.2 Glow-wire flammability index11 11 Test report12 Bibliography13 Table 1 Initial test temperatures .10 BS EN 60695-2-12:2010+A1:2014 60695-2-12 IEC:2010+A1:2014 5 INTRODUCTION In the design of any electrotechnical product, the risk of fire and the potential hazards associated with fire ne
34、ed to be considered. In this respect the objective of component, circuit, and product design, as well as the choice of materials, is to reduce to acceptable levels the potential risks of fire during normal operating conditions, reasonable foreseeable abnormal use, malfunction and/or failure. IEC/TC
35、89 has developed IEC 60695-1-10, together with its companion, IEC 60695-1-11, to provide guidance on how this is to be accomplished. The primary aims of IEC 60695-1-10 and IEC 60695-1-11 are to provide guidance on how: a) to prevent ignition caused by an electrically energized component part, and b)
36、 to confine any resulting fire within the bounds of the enclosure of the electrotechnical product in the event of ignition. Secondary aims of IEC 60695-1-10 and IEC 60695-1-11 include the minimization of any flame spread beyond the products enclosure and the minimization of the harmful effects of fi
37、re effluents such as heat, smoke, toxicity and/or corrosivity. In electrotechnical equipment, overheated metal parts can act as ignition sources. In glow-wire tests a red-hot glowing wire is used to simulate such an ignition source. IEC 60695-2-10 describes a glow-wire test apparatus and common test
38、 procedure, IEC 60695-2-11 describes a glow-wire flammability test for end products, and IEC 60695-2-13 describes a glow-wire ignition temperature test method for materials. This International Standard may involve hazardous materials, operations, and equipment. It does not purport to address all of
39、the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. !Fires involving electrotechnical products can also be initiated from extern
40、al non-electrical sources. Considerations of this nature should be dealt with in the overall fire hazard assessment.“!This part of IEC 60695 describes a glow-wire fl ammability index test for materials. It should be used to measure, describe, and rank the properties of materials in response to heat
41、caused by contact with an electrically heated wire under controlled laboratory conditions. This may be useful for the evaluation of materials for use in products that may be exposed to excess thermal stress such as a fault current fl owing through a wire, overloading of components, and/or bad connec
42、tions. It should not be used to solely describe or appraise the fi re hazard or fi re risk of materials, products, or assemblies under actual fi re conditions. However, results of this test may be used as elements of a fi re hazard assessment which takes into account all of the factors which are per
43、tinent to a particular end use.“BS EN 60695-2-12:2010+A1:201460695-2-12 IEC:2010+A1:2014 6 FIRE HAZARD TESTING Part 2-12: Glowing/hot-wire based test methods Glow-wire flammability index (GWFI) test method for materials 1 Scope This part of IEC 60695 specifies the details of the glow-wire test to be
44、 applied to test specimens of solid electrical insulating materials or other solid materials for flammability testing to determine the glow-wire flammability index (GWFI). GWFI is the highest temperature, determined during this standardized procedure, at which the tested material a) does not ignite
45、or, if it does, extinguishes within 30 s after removal of the glow-wire and is not totally consumed, and b) molten drips, if they occur, do not ignite the wrapping tissue. This test method is a materials test carried out on a series of standard test specimens. The data obtained, along with data from
46、 the glow-wire ignition temperature (GWIT) test method for materials, IEC 60695-2-13, can then be used in a preselection process in accordance with IEC 60695-1-30 to judge the ability of materials to meet the requirements of IEC 60695-2-11. NOTE As an outcome of conducting a fire hazard assessment,
47、an appropriate series of preselection flammability and ignition tests may allow a reduction of end product testing. 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
48、 51. One of the responsibilities of a technical committee 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 inc
49、luded 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) applies. IEC 60695-1-30:2008, Fire hazard testing Part 1-30: Guidance for assessing the fire hazard of electrotechnical products Preselection testing process General guidelines IEC 60695
