SANS 60332-3-10-2009 Tests on electric and optical fibre cables under fire conditions Part 3-10 Test for vertical flame spread of vertically-mounted bunched wires or cables - Appar.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22442-4 SANS 60332-3-10:2009Edition 1.1 and nat. amdt 1IEC 60332-3-10:2009Edition 1.1SOUTH AFRICAN NATIONAL STANDARD Tests on electric and

4、 optical fibre cables under fire conditons Amdt 1 Part 3-10: Test for vertical flame spread of vertically-mounted bunched wires or cables Apparatus This national standard is the identical implementation of IEC 60332-3-10:2009 and is adopted with the permission of the International Electrotechnical C

5、ommission. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 60332-3-10:2009 Edition 1.1 and nat. amdt 1 IEC 60332-3-10:2009 Edition 1.1 Table of changes Change No. Date Scope Nat. amdt 1

6、 2007 Amended to change the designation from SABS to SANS, with no technical changes. IEC amdt 1 2008 Amended to change the title, to delete a paragraph from the introduction, to change requirements for the test apparatus, the type of ignition source and the details of a recommended burner, and to a

7、dd the details of recommended mass flowmeters. National foreword This South African standard was approved by National Committee SABS TC 66, Electric cables, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was publi

8、shed in May 2009. This SANS document supersedes SANS 60332-3-10:2000 (edition 1 as modified by nat. amdt 1:2007). IEC 60332-3-10Edition 1.1 2009-02INTERNATIONAL STANDARD NORME INTERNATIONALETests on electric and optical fibre cables under fire conditions Part 3-10: Test for vertical flame spread of

9、vertically-mounted bunched wires or cables Apparatus Essais des cbles lectriques et des cbles fibres optiques soumis au feu Partie 3-10: Essai de propagation verticale de la flamme des fils ou cbles monts en nappes en position verticale Appareillage INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSI

10、ON ELECTROTECHNIQUE INTERNATIONALE CEICS 29.060.20;13.220.40; 29.020 PRICE CODECODE PRIXISBN 2-8318-1029-4GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale SANS 603

11、32-3-10:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 2 60332-3-10 IEC:2000+A1:2008 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references6 3 Definitions 6 4 Test environment6 5 Test apparatus .7 5.1 Test chamber 7 5.2 Air

12、 supply 7 5.3 Ladder types7 5.4 Effluent cleaning attachment7 6 Ignition source 8 6.1 Type8 6.2 Positioning.9 Annex A (informative) Details of recommended burner 18 Annex B (informative) Flowmeter calibration correction factors 19 Figure 1 Test chamber .11 Figure 2 Thermal insulation of back and sid

13、es of the test chamber12 Figure 3 Positioning of burner and typical arrangement of test sample on ladder.13 Figure 4 Tubular steel ladders for cable test .14 Figure 5 Burner configurations15 Figure 6 Arrangement of holes for burners16 Figure 7 Schematic diagram of an example of a burner control syst

14、em using rotameters.17 SANS 60332-3-10:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60332-3-10 IEC:2000+A1:2008 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ TESTS ON ELECTRIC AND OPTICAL FIBRE CABLES UNDER FIRE CONDITIONS Part 3-10: T

15、est for vertical flame spread of vertically-mounted bunched wires or cables Apparatus 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

16、 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 Gu

17、ides (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

18、 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 p

19、ossible, 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.

20、 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 undert

21、ake 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

22、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 inclu

23、ding 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 relia

24、nce 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 el

25、ements 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. International Standard IEC 60332-3-10 has been prepared by IEC technical committee 20: Electric cables. It has the status of a group safety publication

26、 in accordance with IEC Guide 104. IEC 60332-3-10 forms one of a series of publications dealing with tests on electric cables under fire conditions; the series supersedes IEC 60332-3 published in 1992. The parts of the series are described in the introduction. All pre-existing categories of test are

27、 retained and updated. A new category (category D) has been added to cater for testing at very low non-metallic volumes. SANS 60332-3-10:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 4 60332-3-10 IEC:2000+A1:2008 This consolidated vers

28、ion of IEC 60332-3-10 consists of the first edition (2000) documents 20/402/FDIS and 20/426/RVD and its amendment 1 (2008) documents 20/933/CDV and 20/982A/RVC. The technical content is therefore identical to the base edition and its amendment and has been prepared for user convenience. It bears the

29、 edition number 1.1. A vertical line in the margin shows where the base publication has been modified by amendment 1. Annexes A and B are for information only. The committee has decided that the contents of the base publication and its amendments will remain unchanged until the maintenance result da

30、te indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. SANS 60332-3-10:2009This s tandard may only be used and printed by approved subscri

31、ption and freemailing clients of the SABS .60332-3-10 IEC:2000+A1:2008 5 INTRODUCTION Parts 1 and 2 of IEC 60332 specify methods of test for flame spread characteristics for a single vertical insulated wire or cable. It cannot be assumed that, because a wire or cable meets the requirements of parts

32、1 and 2, a vertical bunch of similar cables or wires will behave in a similar manner. This is because flame spread along a vertical bunch of cables depends on a number of features, such as a) the volume of combustible material exposed to the fire and to any flame which may be produced by the combust

33、ion of the cables; b) the geometrical configuration of the cables and their relationship to an enclosure; c) the temperature at which it is possible to ignite the gases emitted from the cables; d) the quantity of combustible gas released from the cables for a given temperature rise; e) the volume of

34、 air passing through the cable installation; f) the construction of the cable, for example armoured or unarmoured, multi- or single-core. All of the foregoing assume that the cables are able to be ignited when involved in an external fire. Part 3 of IEC 60332 gives details of a test where a number o

35、f cables are bunched together to form various test sample installations. For easier use and differentiation of various test categories, the parts are designated as follows: Part 3-10: Apparatus Part 3-21: Category A F/R Part 3-22: Category A Part 3-23: Category B Part 3-24: Category C Part 3-25: Cat

36、egory D Parts from 3-21 onwards define the various categories and the relevant procedures. The categories are distinguished by test duration, the volume of non-metallic material of the test sample and the method of mounting the sample for the test. In all categories, cables having at least one condu

37、ctor of cross-sectional area greater than 35 mm2are tested in a spaced configuration, whereas cables of conductor cross-sectional area of 35 mm2or smaller are tested in a touching configuration. The categories are not necessarily related to different safety levels in actual cable installations. The

38、actual installed configuration of the cables may be a major determinant in the level of flame spread occurring in an actual fire. The method of mounting described in category A F/R (part 3-21) is intended for special cable designs used in particular installations. Categories A, B, C and D (parts 3-2

39、2 to 3-25 respectively) are for general use where different non-metallic volumes are applicable. SANS 60332-3-10:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 6 60332-3-10 IEC:2000+A1:2008 TESTS ON ELECTRIC AND OPTICAL FIBRE CABLES UND

40、ER FIRE CONDITIONS Part 3-10: Test for vertical flame spread of vertically-mounted bunched wires or cables Apparatus 1 Scope The series of International Standards covered by Parts 3-10, 3-21, 3-22, 3-23, 3-24 and 3-25 of IEC 60332 specifies methods of test for the assessment of vertical flame spread

41、 of vertically-mounted bunched wires or cables, electrical or optical, under defined conditions. NOTE For the purpose of this standard the term “electric wire or cable” covers all insulated metallic conductor cables used for the conveyance of energy or signals. This part of IEC 60332 details the app

42、aratus and its arrangement and calibration. 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 ame

43、ndments) applies. IEC 60695-4, Fire hazard testing Part 4: Terminology concerning fire tests IEC Guide 104, The preparation of safety publications and the use of basic safety publications and group safety publications 3 Definitions For the purpose of this part of IEC 60332 the following definition a

44、pplies. The definition is taken from IEC 60695-4. 3.1 ignition source source of energy that initiates combustion 4 Test environment The test shall not be carried out if the external wind speed, measured by an anemometer fitted on the top of the test rig, is greater than 8 m/s and shall not be carrie

45、d out if the temperature of the inside walls is below 5 C or above 40 C measured at a point approximately 1 500 mm above floor level, 50 mm from a side wall, and 1 000 mm from the door. The enclosure door shall be closed throughout the test. SANS 60332-3-10:2009This s tandard may only be used and pr

46、inted by approved subscription and freemailing clients of the SABS .60332-3-10 IEC:2000+A1:2008 7 5 Test apparatus The test apparatus consists of the following: 5.1 Test chamber The test rig (see Figures 1a and 1b) shall comprise a vertical test chamber having a width of (1 000 100) mm, a depth of (

47、2 000 100) mm and a height of (4 000 100) mm; the floor of the chamber shall be raised above ground level. The test chamber shall be nominally airtight along its sides, air being admitted at the base of the test chamber through an aperture of (800 20) mm (400 10) mm situated (150 10) mm from the fro

48、nt wall of the test chamber (see figure 1). An outlet (300 30) mm x (1 000 100) mm shall be made at the rear edge of the top of the test chamber. The back and sides of the test chamber shall be thermally insulated to give a coefficient of heat transfer of approximately 0,7 Wm2K1. For example, a stee

49、l plate 1,5 mm to 2,0 mm thick covered with 65 mm of mineral wool with a suitable external cladding is satisfactory (see figure 2). The distance between the ladder and the rear wall of the chamber is (150 10) mm, and between the bottom rung of the ladder and the floor (400 5) mm. The clearance between the lowest point of the test piece and the floor is approximately 100 mm (see figure 3). 5.2 Air supply A means of supplying a controlled air flow through t