1、 IEC 60695-11-4 Edition 1.0 2011-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Fire hazard testing Part 11-4: Test flames 50 W flame Apparatus and confirmational test method Essais relatifs aux risques du feu Partie 11-4: Flammes dessai Flamme de 50 W Appareillage et mthodes dessai de vrification I
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16、cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60695-11-4 Edition 1.0 2011-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Fire hazard testing Part 11-4: Test flames 50 W flame Appa
17、ratus and confirmational test method Essais relatifs aux risques du feu Partie 11-4: Flammes dessai Flamme de 50 W Appareillage et mthodes dessai de vrification INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE S ICS 13.220.40; 29.020 PRICE CODE CODE PRIX ISBN 978-
18、2-88912-698-9 BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60695-11-4 IEC:2011 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normative reference
19、s 6 3 Terms and definitions . 6 4 Production of a standardized 50 W nominal test flame. 7 4.1 Requirements 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 d
20、evices . 9 4.2.8 Fuel gas 9 4.2.9 Laboratory fumehood/chamber . 9 4.3 Production of the test flame . 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
21、) Recommended arrangements for the use of the test flame . 17 Annex C (informative) Clearance 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
22、Flame height gauge 12 Figure A.1 Burner General assembly . 13 Figure A.2 Burner 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 arran
23、gements . 20 60695-11-4 IEC:2011 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIRE HAZARD TESTING Part 11-4: Test flames 50 W flame Apparatus and confirmational test method FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
24、 national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Tec
25、hnical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory wo
26、rk. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
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29、end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publi
30、cation shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by indepen
31、dent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any pe
32、rsonal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative r
33、eferences cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible
34、for identifying any or all such patent rights. International Standard IEC 60695-11-4 has been prepared by IEC technical committee 89: Fire hazard testing. This first edition of IEC 60695-11-4 cancels and replaces the second edition of technical specification IEC/TS 60695-11-4 published in 2004. It c
35、onstitutes a technical revision and now has the status of an International Standard. It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51. The main changes with respect to the previous edition are the integration of minor editorial and technical chang
36、es throughout the text. 4 60695-11-4 IEC:2011 The text of this standard is based on the following documents: FDIS Report on voting 89/1060/FDIS 89/1084/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publica
37、tion has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all the parts in the IEC 60695 series, under the general title Fire hazard testing, can be found on the IEC website. IEC 60695-11 consists of the following parts: Part 11-2: Test flames 1 kW nominal pre-mixed flame Ap
38、paratus, confirmatory test arrangement and guidance Part 11-3: Test flames 500 W flames Apparatus and confirmational test methods Part 11-4: Test flames 50 W flame Apparatus and confirmational test method Part 11-5: Test flames Needle-flame test method Apparatus, confirmatory test arrangement and gu
39、idance Part 11-10: Test flames 50 W horizontal and vertical flame test methods Part 11-11: Test flames Determination of the characteristic heat flux for ignition from a non- contacting flame source Part 11-20: Test flames 500 W flame test methods Part 11-30: Test flames History and development from
40、1979 to 1999 Part 11-40: Test flames Confirmatory tests Guidance The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, t
41、he publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 60695-11-4 IEC:2011 5 INTRODUCTION The best method for testing electrotechnical products with regard to fire hazard is to duplicate exactly the conditions occurring in practice. In most instances, this is not p
42、ossible. 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 standards that make available standardized
43、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 60695-11-2. This international standard provides a description
44、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 60695-11-40. Three 50 W test flame methods (A, B and C) were originally s
45、pecified 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 Approximate flame height / mm A Pre-mixed Methane 20 B Withdrawn C Wi
46、thdrawn 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 flowmeter to adjust the gas flow rate, and adjustable air ports
47、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 enhancement of previous technology. 6 60695-11-4 IEC:2011 FIRE HAZARD TE
48、STING Part 11-4: Test flames 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
49、the 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 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.
