EN 60695-11-3-2012 en Fire hazard testing - Part 11-3 Test flames - 500 W flames - Apparatus and confirmational test methods.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFire hazard testingPart 11-3: Test flames 500 W flames Apparatus and confirmational test methods (IEC 60695-11-3:2012)BS EN 60695-11-3:2012National forewordThis British Standard

2、is the UK implementation of EN 60695-11-3:2012. It is identical to IEC 60695-11-3:2012. It supersedes DD IEC/TS 60695-11-3:2004, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/89, Fire hazard testing.A list of organizations represented on this com

3、mittee can be obtained on request to its secretary.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 2012.Published by BSI Standards Limited 2012.ISBN 978 0 580 70441 3 ICS 13.

4、220.40; 29.020 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS

5、EN 60695-11-3:2012EUROPEAN STANDARD EN 60695-11-3 NORME EUROPENNE EUROPISCHE NORM October 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 100

6、0 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60695-11-3:2012 E ICS 13.220.40; 29.020 English version Fire hazard testing - Part 11-3: Test flames - 500 W flames - Apparatus and confirmational test methods (IEC 6

7、0695-11-3:2012) Essais relatifs aux risques du feu - Partie 11-3: Flammes dessai - Flamme de 500 W - Appareillage et mthodes dessai de vrification (CEI 60695-11-3:2012) Prfungen zur Beurteilung der Brandgefahr - Teil 11-3: Prfflammen - 500-W-Prfflamme - Prfeinrichtungen und Prfverfahren zur Besttigu

8、ng (IEC 60695-11-3:2012) This European Standard was approved by CENELEC on 2012-09-17. 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 l

9、ists 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 other language made by translation

10、 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, Cyprus, the Czech Republic, Denmark

11、, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, 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 60695-1

12、1-3:2012EN 60695-11-3:2012 Foreword The text of document 89/1113/FDIS, future edition 1 of IEC 60695-11-3, prepared by IEC/TC 89 “Fire hazard testing“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60695-11-3:2012. The following dates are fixed: latest date by which the

13、 document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-06-17 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-09-17 Attention is drawn to the possibility that some of the

14、 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. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits

15、 (LVD - 2006/95/EC). Endorsement notice The text of the International Standard IEC 60695-11-3:2012 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 60695-11-2:2003

16、 NOTE Harmonised as EN 60695-11-2:2003 (not modified). IEC 60695-11-4:2011 NOTE Harmonised as EN 60695-11-4:2011 (not modified). BS EN 60695-11-3:2012EN 60695-11-3:2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The followin

17、g documents, 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 When an intern

18、ational 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 tables EN 60584-1 1995 IEC 60584-2 + A1 1982 1989 Thermocouples - Part 2: Tolerances EN 60584-2 1993 1)I

19、EC Guide 104 1997 2)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 13943 2008 Fire safety - Vocabulary EN ISO 13943 2010 ASTM B187/B187M-06 -

20、Standard Specification for Copper, Bus Bar, Rod, and Shapes and General Purpose Rod, Bar, and Shapes - - 1) EN 60584-2 includes A1 to IEC 60584-2. 2)Superseded by IEC Guide 104:2010. BS EN 60695-11-3:201260695-11-3 IEC:2012 CONTENTS INTRODUCTION . 6 1 Scope . . 7 2 Normative references . 7 3 Terms a

21、nd definitions . 8 4 Method A Production of a standardized 500 W nominal test flame based on existing hardware 8 4.1 Requirements . 8 4.2 Apparatus and fuel 8 4.2.1 Burner . 8 4.2.2 Flowmeter . 8 4.2.3 Manometer 9 4.2.4 Control valve . . 9 4.2.5 Copper block . . 9 4.2.6 Thermocouple. 9 4.2.7 Tempera

22、ture/time indicating/recording devices . 9 4.2.8 Fuel gas . . 9 4.2.9 Laboratory fumehood/chamber 9 4.3 Production of the test flame . 10 4.4 Confirmation of the test flame . 10 4.4.1 Principle 10 4.4.2 Procedure 10 4.4.3 Verification . 11 5 Method C Production of a standardized 500 W nominal test f

23、lame based on nonadjustable hardware . 11 5.1 Requirements . . 11 5.2 Apparatus and fuel . 11 5.2.1 Burner . 11 5.2.2 Flowmeters . 11 5.2.3 Manometers . 12 5.2.4 Control valves 12 5.2.5 Copper block 12 5.2.6 Thermocouple. 12 5.2.7 Temperature/time indicating/recording devices . . 12 5.2.8 Fuel gas 1

24、2 5.2.9 Air supply 12 5.2.10 Laboratory fumehood/chamber 13 5.3 Production of the test flame . 13 5.4 Confirmation of the test flame . 13 5.4.1 Principle 13 5.4.2 Procedure 13 5.4.3 Verification . 14 6 Classification and designation . . 14 Annex A (normative) Test arrangements Method A 17 Annex B (n

25、ormative) Test arrangement Method C 21 BS EN 60695-11-3:201260695-11-3 IEC:2012 Annex C (informative) Recommended arrangements for the use of either of the test flames . 26 Annex D (informative) Test arrangements for tests on equipment . 27 Annex E (informative) Test arrangements for tests on materi

26、al . 28 Bibliography . 29 Figure 1 Flame dimensions . 15 Figure 2 Copper block . . 15 Figure 3 Flame height gauge 16 Figure A.1 General assembly and details 18 Figure A.2 Supply arrangement for burner (example) . 19 Figure A.3 Confirmatory test arrangement . 20 Figure B.1 Burner, method C General as

27、sembly . 21 Figure B.2 Burner details Burner barrel, O-ring, air manifold and air supply tube 22 Figure B.3 Burner details Gas supply tube and gas jet 23 Figure B.4 Burner details Burner base and elbow block. 23 Figure B.5 Supply arrangement for burner (example) . 24 Figure B.6 Confirmatory test arr

28、angement . 25 Figure D.1 Examples of test arrangements . 27 Figure E.1 Examples of test arrangements . 28 BS EN 60695-11-3:2012 6 60695-11-3 IEC:2012 INTRODUCTION The best method for testing electrotechnical products with regard to fire hazard is to duplicate exactly the conditions occurring in prac

29、tice. 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 resulted in a series of stand

30、ards 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, a 50 W flame is described in IEC 60695-11-4, and a 1 kW flame is described in IEC 60695-11-2. This international

31、 standard provides a description of the apparatus required to produce either of two 500 W test flames, and also provides 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 60695-11-40

32、. Four 500 W test flame methods were originally specified in Edition 1 of IEC/TS 60695-11-3, with the intention that users would determine a ranking preference. This process has resulted in two of these flame methods, B and D, being withdrawn, as shown below: 500 W test flame method Flame type Gas A

33、pproximate flame height / mm A Pre-mixed Methane 125 B Withdrawn C Pre-mixed Methane or propane 125 D Withdrawn Method A was first published in 1994 and was based on existing hardware. The flame is produced by burning methane, and the method makes use of a more tightly specified version of a burner

34、that was used in some countries for many years. Method C is based on non-adjustable hardware that has been specifically developed to produce a highly repeatable and stable test flame. The flame is produced by burning either methane or propane. Both methods have been developed as technical enhancemen

35、ts of previous technology. BS EN 60695-11-3:201260695-11-3 IEC:2012 7 FIRE HAZARD TESTING Part 11-3: Test flames 500 W flames Apparatus and confirmational test methods 1 Scope This part of IEC 60695-11 provides detailed requirements for the production of either of two 500 W nominal, pre-mixed type t

36、est flames. The approximate overall height of each flame is 125 mm. Two methods of producing a test flame are described: Method A uses methane. Method C can use either methane or propane. This basic safety publication is intended for use by technical committees in the preparation of standards in acc

37、ordance 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 preparation of its publications. The requirements, test methods or test conditions of this basic

38、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 this document and are indispensable for its application. For dated references, only the editi

39、on 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 am.1 ed.1:1989, Amendment 1, Thermocouples Part 2: Tolerances IEC Guide 104:1997, The preparation of safety

40、 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 Specification for Copper, Bus Bar, Rod, and Shapes and Genera

41、l Purpose Rod, Bar, and Shapes BS EN 60695-11-3:2012 8 60695-11-3 IEC:2012 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC 13945, as well as the following definition apply. 3.1 standardized 500 W nominal test flame test flame that conforms to thi

42、s international standard and meets all of the requirements given in Clause 4 and Clause 6 4 Method A Production of a standardized 500 W nominal test flame based on existing hardware 4.1 Requirements A standardized 500 W nominal test flame, according to this method, is one that is: produced using har

43、dware according to Figures A.1 and A.2, supplied with methane gas of purity not less than 98 % at a flow rate equivalent to 965 ml/min 30 ml/min at 23 C, 0,1 MPa 1, and at a back pressure of 125 mm 5 mm water, using the arrangements of Figure A.2. The flame shall be symmetrical, stable and give a re

44、sult of 54 s 2 s in the confirmatory test described in 4.4. The confirmatory test arrangement shown in Figure A.3 shall be used. The approximate dimensions of the flame (see Figure 1), when measured in the laboratory fumehood/chamber using the gauge as described in Figure 3, should be: height of inn

45、er blue cone: 40 mm; overall height of flame: 125 mm. 4.2 Apparatus and fuel 4.2.1 Burner The burner shall be in accordance with Figure A.1. NOTE The burner tube, gas injector and needle valve are removable for cleaning purposes. Care should be taken on re-assembly that the needle valve tip is not d

46、amaged and that the needle valve and valve seat (gas injector) are correctly aligned. 4.2.2 Flowmeter The flowmeter shall be appropriate for the measurement of the gas flow rate of 965 ml/min at 23 C, 0,1 MPa1to a tolerance of 2 %. NOTE A mass flowmeter is the preferred means of controlling accurate

47、ly the input flow rate of fuel to the burner. Other methods may be used if they can show equivalent accuracy. _ 1When corrected from the measurements taken under actual conditions of use. BS EN 60695-11-3:201260695-11-3 IEC:2012 9 4.2.3 Manometer The manometer shall be appropriate for the measuremen

48、t of pressure in the range of 0 kPa to 7,5 kPa. A water manometer may be used for this purpose. It should be adapted to read 0 kPa to 7,5 kPa. NOTE A manometer is required in conjunction with a mass flowmeter in order to maintain the required back pressure. 4.2.4 Control valve A control valve is req

49、uired to set the gas flow rate. 4.2.5 Copper block The copper block shall be 9 mm in diameter, of mass 10,00 g 0,05 g in the fully machined but undrilled state as shown in Figure 2. There is no verification method for the copper block. Laboratories are encouraged to maintain a standard reference unit, a secondary standard reference unit and a working unit, cross-comparing them as appropriate to verify the working system. 4.2.6 Ther