EN 60695-11-2-2014 en Fire hazard testing - Part 11-2 Test flames - 1 kW nominal pre-mixed flame Apparatus confirmatory test arrangement and guidance.pdf

1、BSI Standards PublicationFire hazard testingPart 11-2: Test flames 1 kW nominal pre-mixed flame: Apparatus, confirmatory test arrangement and guidanceBS EN 60695-11-2:2014National forewordThis British Standard is the UK implementation of EN 60695-11-2:2014. It isidentical to IEC 60695-11-2:2013. It

2、supersedes BS EN 60695-11-2:2003which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/89, Fire hazard testing.A list of organizations represented on this committee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

3、 the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 72009 3ICS 13.220.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Sta

4、ndard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60695-11-2:2014EUROPEAN STANDARD EN 60695-11-2 NORME EUROPENNE EUROPISCHE NORM March 2014 CENELEC European Comm

5、ittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for

6、 CENELEC members. Ref. No. EN 60695-11-2:2014 E ICS 13.220.40 Supersedes EN 60695-11-2:2003 English version Fire hazard testing - Part 11-2: Test flames - 1 kW nominal pre-mixed flame: Apparatus, confirmatory test arrangement and guidance (IEC 60695-11-2:2013) Essais relatifs aux risques du feu - Pa

7、rtie 11-2: Flammes dessai - Flamme prmlange de 1 kW nominal - Appareillage, disposition dessai de vrification et indications (CEI 60695-11-2:2013) Prfungen zur Beurteilung der Brandgefahr - Teil 11-2: Prfflammen - 1-kW-Flamme mit Gas-Luft-Gemisch: Prfeinrichtung und Leitfaden (IEC 60695-11-2:2013) T

8、his European Standard was approved by CENELEC on 2014-01-14. 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 r

9、eferences 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 under the responsibility

10、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, Estonia, Finland, Former

11、 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 60695-11-2:2014EN 60695-11-2:2014

12、 - 2 - Foreword The text of document 89/1193/FDIS, future edition 2 of IEC 60695-11-2, prepared by IEC/TC 89 “Fire hazard testing“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60695-11-2:2014. The following dates are fixed: latest date by which the document has to be

13、implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-10-14 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-01-14 This document supersedes EN 60695-11-2:2003. EN 60695-11-2:2014 includes t

14、he following significant technical changes with respect to EN 60695-11-2:2003: editorial changes to align with other TC 89 test flame publications; editorially updated throughout; technical changes to the burner set up requirements see 4.1, 4.2.2, 5 and Fig. A.6; technical changes to the test flame

15、confirmation procedure see 6.2 and 6.3. 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. This standard covers the Principle Elements of

16、 the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC). Endorsement notice The text of the International Standard IEC 60695-11-2:2013 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibli

17、ography, the following notes have to be added for the standards indicated: IEC 60695-1-10 NOTE Harmonised as EN 60695-1-10. IEC 60695-1-11 NOTE Harmonised as EN 60695-1-11. BS EN 60695-11-2:2014- 3 - EN 60695-11-2:2014 Annex ZA (normative) Normative references to international publications with thei

18、r corresponding European publications 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 edition cited applies. For undated references, the latest edition of the referenced document (incl

19、uding 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 tables EN 60584-11) 1995 IEC 60584-2 + A1 1982 1989 Th

20、ermocouples - Part 2: Tolerances EN 60584-2 -2) 3) 1993 - ISO 13943 2008 Fire safety - Vocabulary - - 1) EN 60584-1 is superseded by EN 60584-1:2013, which is based on IEC 60584-1:2013. 2) EN 60584-2 includes A1 to IEC 60584-2. 3) EN 60584-2 is superseded by EN 60584-1:2013, which is based on IEC 60

21、584-1:2013. BS EN 60695-11-2:2014 2 60695-11-2 IEC:2013 CONTENTS INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms and definitions 6 4 Burner/supply arrangement 7 4.1 Requirements 7 4.2 Apparatus and fuel . 7 4.2.1 Burner 7 4.2.2 Flow control 7 4.2.3 Copper block 8 4.2.4 Thermocouple . 8 4

22、.2.5 Temperature/time indicating/recording devices . 8 4.2.6 Laboratory fumehood/chamber . 8 5 Production of the test flame . 8 6 Confirmation of the test flame 9 6.1 Principle 9 6.2 Frequency of confirmatory tests . 9 6.3 Procedure 9 7 Recommended arrangements for use of the test flame 10 Annex A (

23、normative) Burner construction . 12 Annex B (informative) Examples of test arrangements . 19 Bibliography 20 Figure 1 Flame dimensions 11 Figure A.1 General assembly . 12 Figure A.2 Pre-mixed burner details . 13 Figure A.3 Pre-mixed burner details . 14 Figure A.4 Pre-mixed burner details . 15 Figure

24、 A.5 Pre-mixed burner details . 16 Figure A.6 Example of supply arrangement for burner 17 Figure A.7 Copper block 17 Figure A.8 Confirmatory test arrangement 18 Figure B.1 Examples of test arrangements . 19 BS EN 60695-11-2:201460695-11-2 IEC:2013 5 INTRODUCTION In the design of any electrotechnical

25、 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 product design, as well as the choice of materials, is to reduce to acceptable levels the potential risks of fire during normal operating conditio

26、ns, reasonable foreseeable abnormal use, malfunction, and/or failure. IEC Technical Committee 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 guid

27、ance on how: a) to prevent ignition caused by an electrically energized component part, and b) to confine any resulting fire within the bounds of the enclosure of the electrotechnical product in the event of ignition. Secondary aims of these documents include the minimization of any flame spread bey

28、ond the products enclosure and the minimization of harmful effects of fire effluents such as heat, smoke, toxicity and/or corrosivity. Fires involving electrotechnical products can also be initiated from external non-electrical sources. Considerations of this nature should be dealt with in the overa

29、ll fire risk assessment. IEC 60695-11-2 provides a description of the apparatus required to produce a 1 kW test flame, and provides a description of the principle of a confirmation procedure to check that the effective power output of the flame is as intended. Guidance on confirmatory tests for test

30、 flames is given in IEC/TS 60695-11-40. This international standard may involve hazardous materials, operations, and equipment. It does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this international standard to establish appropri

31、ate safety and health practices and determine the applicability of regulatory limitations prior to use. BS EN 60695-11-2:2014 6 60695-11-2 IEC:2013 FIRE HAZARD TESTING Part 11-2: Test flames 1 kW nominal pre-mixed flame Apparatus, confirmatory test arrangement and guidance 1 Scope This part of IEC 6

32、0695 gives the requirements for the production and confirmation of a nominal 1 kW, propane/air pre-mixed test flame. 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 Guid

33、e 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 in

34、cluded 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 edition cited applies. For undated references, the latest edition of the ref

35、erenced document (including any amendments) applies. IEC 60584-1:1995, Thermocouples Part 1: Reference tables IEC 60584-2:1982, Thermocouples Part 2: Tolerances Amendment 1:1989 ISO 13943:2008, Fire safety Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definition

36、s given in ISO/IEC 13943:2008, some of which are reproduced below for the users convenience, as well as the following apply. 3.1 combustion exothermic reaction of a substance with an oxidizing agent Note 1 to entry: Combustion generally emits fire effluent accompanied by flames and/or glowing. SOURC

37、E: ISO/IEC 13943:2008, definition 4.46 3.2 draught-free environment space in which the results of experiments are not significantly affected by the local air speed BS EN 60695-11-2:201460695-11-2 IEC:2013 7 Note 1 to entry: A qualitative example is a space in which a wax candle flame remains essenti

38、ally undisturbed. Quantitative examples are small-scale fire tests in which a maximum air speed of 0,1 m s-1 or 0,2 m s-1 sometimes specified. SOURCE: ISO/IEC 13943:2008, definition 4.70 3.3 flame, noun rapid, self-sustaining, sub-sonic propagation of combustion in a gaseous medium, usually with emi

39、ssion of light SOURCE: ISO/IEC 13943:2008, definition 4.133 3.4 pre-mixed flame flame in which combustion occurs in an intimate mixture of fuel and oxidizing agent SOURCE: ISO/IEC 13943:2008, definition 4.259 3.5 standardized 1 kW test flame test flame conforming to this international standard and m

40、eeting all of the requirements given in Clauses 4 to 6 4 Burner/supply arrangement 4.1 Requirements A standardized 1 kW test flame, according to this method, is one that is produced using hardware according to Figures A.1 to A.8, supplied with propane gas of purity not less than 95 %, supplied with

41、air essentially free of oil and water. The flame shall be symmetrical, stable and give a result of 46 s 6 s in the confirmatory test described in Clause 6. The confirmatory test arrangement shown in Figure A.8 shall be used. 4.2 Apparatus and fuel 4.2.1 Burner The burner shall be in accordance with

42、Figures A.1 to A.5 inclusive. NOTE The gas injector and flame stabilizer are removable for cleaning purposes. 4.2.2 Flow control Flow controllers shall be used and shall be capable of: the measurement and control of a propane gas flow rate of about 650 cm3/min at 23 C and 0,1 MPa, with an accuracy o

43、f 2 %, the measurement and control of an air flow rate of about 10 dm3/min at 23 C and 0,1 MPa, with an accuracy of 2 %. NOTE Mass flow controllers will probably have to be used in order to meet the requirements of Clause 5. BS EN 60695-11-2:2014 8 60695-11-2 IEC:2013 4.2.3 Copper block A copper blo

44、ck 9 mm in diameter, with a mass of 10,00 g 0,05 g in the fully machined but undrilled state, as described in Figure A.7, shall be made from electrolytic tough pitch copper Cu-ETP USN C11000 11. 4.2.4 Thermocouple A class 1, in accordance with IEC 60584-1, mineral-insulated, metal-sheathed fine-wire

45、 thermocouple with an insulated junction, shall be used for measuring the temperature of the copper block. It shall have an overall nominal diameter of 0,5 mm and wires of, for example, NiCr and NiAl (type K), in accordance with IEC 60584-1, with the welded point located inside the sheath. The sheat

46、h shall consist of a metal resistant to continuous operation at a temperature of at least 1 050 C. Thermocouple tolerances shall be in accordance with IEC 60584-2, class 1. NOTE A sheath made from a nickel-based, heat resistant alloy (such as Inconel 6002) will satisfy the above requirements. The pr

47、eferred method of fastening the thermocouple to the copper block is by first ensuring that the thermocouple is inserted to the full depth of the hole and then by compressing the copper around the thermocouple as shown in Figure A.8. 4.2.5 Temperature/time indicating/recording devices The temperature

48、/time indicating/recording devices shall be appropriate for the measurement of the time for the copper block to heat up from 100 C 5 C to 700 C 3 C with a tolerance on the measured time of 0,5 s. 4.2.6 Laboratory fumehood/chamber The laboratory fume hood/chamber shall have an inside volume of at lea

49、st 1,0 m3. The chamber shall provide a draught-free environment, whilst allowing normal thermal circulation of air around the test specimen. The chamber shall permit observation of tests in progress. Unless otherwise stated in the relevant specification, the inside surfaces of the chamber shall be of a dark colour and when a lux meter, facing towards the rear of the chamber, is positioned in place of the test specimen, the recorded light leve