1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFire hazard testing Part 11-4: Test flames 50 W flame Apparatus and confirmational test methodBS EN 60695-11-4:2011Copyright European Committee for Electrotechnical Standardizati
2、on 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 60695-11-4:2011. It is identical to IEC 60695-11-4:2011. It supersedes DD IEC/TS 60695-11-4:2004,which
3、 is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/89, Fire hazard testing.A list of organizations represented on this committee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 not purport to include all the necessary provisions of a cont
4、ract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 68527 9 ICS 13.220.40; 29.020Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under
5、 the authority of the Standards Policy and Strategy Committee on 29 February 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60695-11-4:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for Res
6、aleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARD EN 60695-11-4 NORME EUROPENNE EUROPISCHE NORM November 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnisc
7、he Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60695-11-4:2011 E ICS 13.220.40; 29.020 English version Fire hazard testing - Part 11-4: Test flames - 50 W fla
8、me - Apparatus and confirmational test method (IEC 60695-11-4:2011) Essais relatifs aux risques du feu - Partie 11-4: Flammes dessai - Flamme de 50 W - Appareillage et mthodes dessai de vrification (CEI 60695-11-4:2011) Prfungen zur Beurteilung der Brandgefahr - Teil 11-4: Prfflammen - 50 W Prfflamm
9、e - Prfeinrichtungen und Prfverfahren zur Besttigung (IEC 60695-11-4:2011) This European Standard was approved by CENELEC on 2011-11-01. 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 nati
10、onal 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 official versions (English, French, German). A
11、 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 electrotechnical committees of Austria, Belgium, Bulg
12、aria, 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 Kingdom. BS EN 6069
13、5-11-4:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN 60695-11-4:2011 Foreword The text of document 89/1060/FDIS, future edition 1 of IEC 60695-11-4,
14、 prepared by IEC/TC 89 “Fire hazard testing“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60695-11-4:2011. 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 e
15、ndorsement (dop) 2012-08-01 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2014-11-01 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 respo
16、nsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60695-11-4:2011 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard
17、indicated: IEC 60695-11-2:2003 NOTE Harmonized as EN 60695-11-2:2003 (not modified). BS EN 60695-11-4:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN
18、60695-11-4:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated referenc
19、es, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60584-1 1995 Thermocouples - Part 1: Reference
20、 tables EN 60584-1 1995 IEC 60584-2 + A1 1982 1989 Thermocouples - Part 2: Tolerances EN 60584-2 1993 IEC Guide 104 1997 The preparation of safety publications and the use of basic safety publications and group safety publications - - ISO/IEC Guide 51 1999 Safety aspects - Guidelines for their inclu
21、sion in standards - - ISO 13943 2008 Fire safety - Vocabulary EN ISO 13943 2010 ASTM B187 - Standard Specification for Copper, Bus Bar, Rod, and Shapes and General Purpose Rod, Bar, and Shapes - - BS EN 60695-11-4:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS
22、under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-60695-11-4 IEC:2011 CONTENTS INTRODUCTION . 5 1 Scope . . 6 2 Normative references. . 6 3 Terms and definitions . 6 4 Production of a standardized 50 W nominal test flame. 7 4.1 Requirements
23、. 7 4.2 Apparatus and fuel 8 4.2.1 Burner . 8 4.2.2 Flowmeter 8 4.2.3 Manometer 8 4.2.4 Control valve . . 8 4.2.5 Copper block . . 8 4.2.6 Thermocouple . 8 4.2.7 Temperature/time indicating/recording devices 9 4.2.8 Fuel gas . . 9 4.2.9 Laboratory fumehood/chamber . 9 4.3 Production of the test flam
24、e . 9 4.4 Confirmation of the test flame 9 4.4.1 Principle . . 9 4.4.2 Procedure 10 4.4.3 Verification . 10 5 Classification and designation . 10 Annex A (normative) Test arrangements . . 13 Annex B (informative) Recommended arrangements for the use of the test flame . . 17 Annex C (informative) Cle
25、arance gauge . . 18 Annex D (informative) Test arrangements for tests on equipment . 19 Annex E (informative) Test arrangements for tests on bar test specimens 20 Bibliography . 21 Figure 1 Copper block . . 11 Figure 2 Flame height gauge . 12 Figure A.1 Burner General assembly . . 13 Figure A.2 Burn
26、er details 14 Figure A.3 Supply arrangement for burner (example) . 15 Figure A.4 Confirmatory test arrangement . 16 Figure C.1 Clearance gauge . . 18 Figure D.1 Examples of test arrangements . 19 Figure E.1 Examples of test arrangements . 20 BS EN 60695-11-4:2011Copyright European Committee for Elec
27、trotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-60695-11-4 IEC:2011 5 INTRODUCTION The best method for testing electrotechnical products with regard to fire hazard is to duplicate exactly the co
28、nditions occurring in practice. In most instances, this is not possible. Accordingly, for practical reasons, the testing of electrotechnical products with regard to fire hazard is best conducted by simulating as closely as possible the actual effects occurring in practice. Work initiated by ACOS res
29、ulted in a series of standards that make available standardized test flames covering a range of powers for the use of all product committees needing such test flames. A needle flame is described in IEC 60695-11-5, two 500 W flames are described in IEC 60695-11-4, and a 1 kW flame is described in IEC
30、 60695-11-2. This international standard provides a description of the apparatus required to produce a 50 W test flame and a description of a calibration procedure to check that the test flame produced meets given requirements. Guidance on confirmatory tests for test flames is given in IEC 60695-11-
31、40. Three 50 W test flame methods (A, B and C) were originally specified in IEC/TS 60695-11-4:2000, with the intention that users would determine a ranking preference. This process has resulted in two of these flame methods being withdrawn, as shown below: 50 W test flame method Flame type Gas Appro
32、ximate flame height / mm A Pre-mixed Methane 20 B Withdrawn C Withdrawn The method described in Clause 4 of this standard is the method that was originally designated as Method A. It produces a 50 W nominal test flame using a single gas supply tube, a needle valve to adjust the gas back pressure, a
33、flowmeter to adjust the gas flow rate, and adjustable air ports on the burner tube. The flame is produced by burning methane, and the method makes use of a more tightly specified version of a burner that was used in some countries for many years. The method has been developed as a technical enhancem
34、ent of previous technology. BS EN 60695-11-4:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 6 60695-11-4 IEC:2011 FIRE HAZARD TESTING Part 11-4: Test f
35、lames 50 W flame Apparatus and confirmational test method 1 Scope This part of IEC 60695 provides detailed requirements for the production of a 50 W nominal, pre-mixed type test flame. The approximate overall height of the flame is 20 mm. Details are given for confirmation of the test flame. This ba
36、sic 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 committee is, wherever applicable, to make use of basic safety publications
37、 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 app
38、lication 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 60584-1:1995, Thermocouples Part 1: Reference tables IEC 60584-2:1989, Thermocouples Part 2: Tolerances Amend
39、ment 1 IEC Guide 104:1997, The preparation of safety publications and the use of basic safety publications and group safety publications ISO/IEC Guide 51:1999, Safety aspects Guidelines for their inclusion in standards ISO/IEC 13943:2008, Fire safety Vocabulary ASTM-B187/B187M-06, Standard Specifica
40、tion for Copper, Bus Bar, Rod, and Shapes and General Purpose Rod, Bar, and Shapes 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC 13943, some of which are reproduced below for the users convenience, as well as the following apply 3.1 burn, intra
41、nsitive verb undergo combustion ISO/IEC 13943, definition 4.28 BS EN 60695-11-4:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-60695-11-4 IEC:2011 7 3.2
42、 burn, transitive verb cause combustion ISO/IEC 13943, definition 4.29 3.3 combustion exothermic reaction of a substance with an oxidizing agent NOTE Combustion generally emits fire effluent accompanied by flames and/or glowing. ISO/IEC 13943, definition 4.46 3.4 draught-free environment space in wh
43、ich the results of experiments are not significantly affected by the local air speed NOTE A qualitative example is a space in which a wax candle flame remains essentially undisturbed. Quantitative examples are small-scale fire tests in which a maximum air speed of 0,1 ms1or 0,2 ms1is sometimes speci
44、fied. ISO/IEC 13943, definition 4.70 3.5 fire hazard physical object or condition with a potential for an undesirable consequence from fire ISO/IEC 13943, definition 4.112 3.6 flame, noun rapid, self-sustaining, sub-sonic propagation of combustion in a gaseous medium, usually with emission of light
45、ISO/IEC 13943, definition 4.133 3.7 pre-mixed flame flame in which combustion occurs in an intimate mixture of fuel and oxidizing agent ISO/IEC 13943, definition 4.259 3.8 standardized 50 W nominal test flame test flame that conforms to this international standard and meets all of the requirements g
46、iven in Clause 4 4 Production of a standardized 50 W nominal test flame 4.1 Requirements A standardized 50 W nominal test flame, according to this method, is one that is produced using hardware according to Figures A.1 and A.2, supplied with methane gas of purity not less than 98 % at a flow rate eq
47、uivalent to 105 ml/min 5 ml/min at 23 C, 0,1 MPa1, using the arrangement of Figure A.3. 1When corrected from measurements taken under actual conditions of use. BS EN 60695-11-4:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for Res
48、aleNo reproduction or networking permitted without license from IHS-,-,- 8 60695-11-4 IEC:2011 NOTE The expected back pressure is less than 10 mm of water. The flame shall be symmetrical, stable and give a result of 44 s 2 s in the confirmatory test described in 4.4. The confirmatory test arrangement shown in Figure A.4 shall be used. The overall height of the flame should be typically within the range 18 mm to 22 mm, but targeted towards 20 mm when measured using the flame height gau
