DD-IEC-TS-60695-11-4-2004.pdf

DRAFT FOR DEVELOPMENT DD IEC TS 60695-11-4:2004 Fire hazard testing Part 11-4: Test flames 50 W flame Apparatus and confirmational test method ICS 13.220.40; 29.020 ? Licensed Copy: London South Bank University, London South Bank University, Mon Dec 11 00:51:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD IEC TS 60695-11-4:2004 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 24 June 2004 © BSI 24 June 2004 ISBN 0 580 43965 8 National foreword This Draft for Development reproduces verbatim IEC TS 60695-11-4:2004. This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature because the subject matter is in an area which is rapidly developing. It should be applied on this provisional basis, so that information and experience of its practical application may be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the international organization responsible for the Technical Specification. A review of this publication will be initiated not later than 3 years after its publication by the international organization so that a decision can be taken on its status at the end of its 3-year life. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards. According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into an international standard, to extend the life of the Technical Specification for another 3 years or to withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee GEL/89, Fire hazard testing, at British Standards House, 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. Summary of pages This document comprises a front cover, an inside front cover, the IEC TS title page, pages 2 to 24, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Mon Dec 11 00:51:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI SPÉCIFICATION TECHNIQUE CEI IEC TECHNICAL SPECIFICATION TS 60695-11-4 Deuxième édition Second edition 2004-04 Essais relatifs aux risques du feu Partie 11-4: Flammes d'essai Flamme de 50 W Appareillage et méthodes d'essai de vérification Fire hazard testing Part 11-4: Test flames 50 W flame Apparatus and confirmational test method Numéro de référence Reference number CEI/IEC/TS 60695-11-4:2004 PUBLICATION FONDAMENTALE DE SÉCURITÉ BASIC SAFETY PUBLICATION DD IEC TS 60695114:2004 Licensed Copy: London South Bank University, London South Bank University, Mon Dec 11 00:51:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TS-59606 -11 4 4002:CEI 3 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references7 3 Terms and definitions .7 4 Method A Production of a standardized nominal 50 W flame test 8 4.1 Requirements8 4.2 Apparatus and fuel 8 4.2.1 Burner .8 4.2.2 Flowmeter8 4.2.3 Manometer 8 4.2.4 Control valve .8 4.2.5 Copper block .9 4.2.6 Thermocouple9 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 test flame.10 4.4 Confirmation of the test flame10 4.4.1 Principle 10 4.4.2 Procedure10 4.4.3 Verification 10 5 Method B (withdrawn) .11 6 Method C (withdrawn).11 7 Classification and designation.11 Annex A (normative) Test arrangements Method A 13 Annex B (withdrawn) .17 Annex C (withdrawn) 18 Annex D (informative) Recommended arrangements for the use of the test flame .19 Annex E (informative) Clearance gauge.20 Annex F (informative) Test arrangements for tests on equipment21 Annex G (informative) Test arrangements for tests on bar test specimens .22 Annex H (informative) Access to equipment manufacturers and suppliers .23 Bibliography24 Figure 1 Copper block 11 Figure 2 Flame height gauge12 Figure A.1 Burner method A General assembly13 Figure A.2 Burner details14 DD IEC TS 60695114:2004 2 Licensed Copy: London South Bank University, London South Bank University, Mon Dec 11 00:51:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TS-59606 -11 4 4002:CEI 5 Figure A.3 Supply arrangement for burner (example)15 Figure A.4 Confirmatory test arrangement 16 Figure E.1 Clearance gauge .20 Figure F.1 Examples of test arrangements21 Figure G.1 Examples of test arrangements.22 DD IEC TS 60695114:2004 3 Licensed Copy: London South Bank University, London South Bank University, Mon Dec 11 00:51:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TS-59606 -11 4 4002:CEI 7 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 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, Technical 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 work. 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. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any 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 publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 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 personal 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 references 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 for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, or the subject is still under technical development or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. DD IEC TS 60695114:2004 4 Licensed Copy: London South Bank University, London South Bank University, Mon Dec 11 00:51:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TS-59606 -11 4 4002:CEI 9 IEC 60695-11-4, which is a technical specification, has been prepared by IEC technical committee 89: Fire hazard testing. This second edition cancels and replaces the first edition published in 2000 and constitutes a technical revision. It is to be used in conjunction with IEC 60695-1-1 and IEC 60695-11-3. The main changes with respect to the previous edition are described below: The introduction has been revised. Test methods B and C have been withdrawn. Test method A has been retained with its original letter designation. Normative reference ISO 1337 has been withdrawn without a replacement by ISO/TC 26. The callout Cu-ETP UNS 11000 is the replacement for all references to ISO 1337. It is taken from ASTM B187-00 and describes high conductivity electrolytic copper. A new Annex H has been added which provides access to equipment manufacturers and suppliers. Alignment with other publications in the IEC 60695-11 series has been made, where appropriate. It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51. The text of this technical specification is based on the following documents: Enquiry draft Report on voting 89/624/DTS 89/647/RVC Full information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until 2012. At this date, the publication will be transformed into an International standard; reconfirmed; withdrawn; replaced by a revised edition, or amended. DD IEC TS 60695114:2004 5 Licensed Copy: London South Bank University, London South Bank University, Mon Dec 11 00:51:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TS-59606 -11 4 4002:CEI 11 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 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. This technical specification provides a general description of the apparatus required to produce a test flame and a general description of the principle of a calibration procedure to check that the flame produced meets the requirements. Detailed information for the confirmation of a test flame can be found in IEC 60695-11-40. This technical specification provides: a) guidance on the design and use of a flame test method to assess the effect on the test specimen of flames such as may arise from other ignited items in the vicinity, or from a fire in its early stages; b) a general description of the apparatus required to produce the test flame; c) a general description of the principle of a calibration procedure to check that the flame produced meets the requirements. The detailed description of the apparatus needed to produce and verify the test flames is given in a series of sheets, of which this is one. The status of this series of test flames, currently under study, is summarized as follows: Nominal power of the flame W Type Gas Present status Apparent overall height mm 50 (A) Pre-mixed Methane Method A of this technical specification Approximately 20 50 (B) (Withdrawn) 50 (C) (Withdrawn) NOTE IEC 60695-11-2 describes the apparatus and confirmatory test method for a 1 000 W nominal test flame and IEC 60695-11-3 describes the apparatus and confirmatory test method for a 500 W nominal test flame. The aim of the work, initiated by ACOS, is to make available an appropriate (minimum) series of standardized test flames, covering a range of powers for the use of all committees needing test flames. Wherever possible these test flames have been based on existing types, but with improved specifications. Method A as described in Clause 4 produces the 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 on the burner tube. This method has been developed as a technical enhancement of previous technology. Flame A as described in Clause 4 is produced by methane and makes use of a more tightly specified version of a burner that has been used in some countries for many years. DD IEC TS 60695114:2004 6 Licensed Copy: London South Bank University, London South Bank University, Mon Dec 11 00:51:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TS-59606 -11 4 4002:CEI 31 FIRE HAZARD TESTING Part 11- 4: Test flames 50 W flame Apparatus and confirmational test method 1 Scope This technical specification provides detailed requirements for the production of a 50 W nominal, pre-mixed type test flame. The approximate overall height is 20 mm. One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its 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 60584-1:1995, Thermocoup