1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationTests on electric and optical fibrecables under fire conditions Part 3-10: Test for vertical flame spread of vertically-mounted bunched wires or cables ApparatusBS EN 60332-3-10:
2、2009National forewordThis British Standard is the UK implementation of EN 60332-3-10:2009. It isidentical to IEC 60332-3-10:2000, incorporating amendment 1:2008.It supersedes BS EN 50266-1:2001 which is withdrawn.The UK participation in its preparation was entrusted by Technical CommitteeGEL/20, Ele
3、ctric cables, to Subcommittee GEL/20/18, Fire testing.A list of organizations represented on this subcommittee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 201
4、0 ISBN 978 0 580 66767 1 ICS 29.060.20; 13.220.40; 29.020; 33.180.10Compliance 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 31 January 2010Amendments/corrigenda issued s
5、ince publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60332-3-10:2009The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is
6、 indicated by !“.EUROPEAN STANDARD EN 60332-3-10 NORME EUROPENNE EUROPISCHE NORM October 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 10
7、00 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60332-3-10:2009 E ICS 29.060.20, 13.220.40; 29.020 Supersedes EN 50266-1:2001 + corr. March 2002English version Tests on electric and optical fibre cables under fire
8、 conditions - Part 3-10: Test for vertical flame spread of vertically-mounted bunched wires or cables - Apparatus (IEC 60332-3-10:2000 + A1:2008) 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
9、en nappes en position verticale - Appareillage (CEI 60332-3-10:2000 + A1:2008) Prfungen an Kabeln, isolierten Leitungen und Glasfaserkabeln im Brandfall - Teil 3-10: Prfung der vertikalen Flammenausbreitung von vertikal angeordneten Bndeln von Kabeln und isolierten Leitungen - Prfvorrichtung (IEC 60
10、332-3-10:2000 + A1:2008) This European Standard was approved by CENELEC on 2009-08-01. 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
11、ists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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
12、 responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, G
13、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 60332-3-10:2009EN 60332-3-10:2009 2 Foreword The text of the International Standard
14、 IEC 60332-3-10:2000 and its amendment A1:2008, prepared by IEC TC 20, Electric cables, was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 60332-3-10 on 2009-08-01 without any modification. This European Standard supersedes EN 50266-1:2001 + corrigendum March 2002. Th
15、e following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2010-08-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2012-08-01 Annex ZA has
16、 been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60332-3-10:2000 and its amendment A1:2008 was approved by CENELEC as a European Standard without any modification. _ BS EN 60332-3-10:2009 3 EN 60332-3-10:2009 Annex ZA (normative) Normative references to interna
17、tional publications with their corresponding European publications 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
18、ndments) applies. NOTE Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60695-4 -1)Fire hazard testing - Part 4: Terminology concerning fire tests EN 60695-4 20062)IEC Guide 104 -1)The
19、preparation of safety publications and the use of basic safety publications and group safety publications - - 1)Undated reference. 2) Valid edition at date of issue. BS EN 60332-3-10:2009 4 60332-3-10 IEC:2000+A1:2008 CONTENTS INTRODUCTION.5 1 Scope.6 2 Normative references6 3 Definitions 6 4 Test e
20、nvironment 6 5 Test apparatus .7 5.1 Test chamber 7 5.2 Air 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 T
21、est chamber .11 Figure 2 Thermal insulation of back and sides 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 Figur
22、e 7 Schematic diagram of an example of a burner control system using rotameters. 17 BS EN 60332-3-10:200960332-3-10 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
23、that, because a wire or cable meets the requirements of parts 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
24、the fire and to any flame which may be produced by the combustion 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
25、from the cables for a given temperature rise; e) the volume of 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
26、. Part 3 of IEC 60332 gives details of a test where a number of 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: Categor
27、y A Part 3-23: Category B Part 3-24: Category C Part 3-25: Category 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
28、 the test. In all categories, cables having at least one conductor 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
29、to different safety levels in actual cable installations. The 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
30、 particular installations. Categories A, B, C and D (parts 3-22 to 3-25 respectively) are for general use where different non-metallic volumes are applicable. BS EN 60332-3-10:2009!Text deleted“ 6 60332-3-10 IEC:2000+A1:2008 TESTS ON ELECTRIC AND OPTICAL FIBRE CABLES UNDER FIRE CONDITIONS Part 3-10:
31、 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 of vertically-mounted bunche
32、d 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 apparatus and its arrangement an
33、d 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 amendments) applies. IEC 60695-4
34、, 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 applies. The definition is tak
35、en 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 carried out if the temperature of t
36、he 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. BS EN 60332-3-10:2009!“60332-3-10 IEC:2000+A1:2008 7 5 Test apparatus The test apparatu
37、s 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 (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
38、 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 front 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
39、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 steel 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).
40、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 co
41、ntrolled air flow through the chamber shall be fitted. Air shall be introduced into the test chamber through a box fitted directly underneath, and of approximately the same dimensions as, the air inlet aperture. Air shall be blown into the box from a suitable fan through a straight section of duct w
42、hich shall enter from the rear of the test chamber and be parallel to the floor and along the burner centre line as shown in Figure 1b. The duct shall be arranged to allow air into the box through an opening in the longest side. NOTE 1 A grille may be placed over the air inlet aperture to facilitate
43、 accessing the test chamber but should neither restrict the airflow nor modify its direction. NOTE 2 A duct of constant cross-section of approximately 240 cm2and minimum length of 60 cm is recommended. Prior to burner ignition, the air flow shall be adjusted to a rate of (5 000 500) l/min at a const
44、ant controlled temperature of (20 10) C and at atmospheric pressure and measured at the inlet side before the test commences. This air flow rate shall be maintained throughout the test until cable burning or glowing has ceased or for a maximum time of 1 h from completion of the test flame applicatio
45、n period, after which period the flame or glowing shall be extinguished. NOTE 3 In order to remove noxious gases, it is recommended to maintain the air flow for some minutes after the end of the test, before entering the test chamber. 5.3 Ladder types There are two types of tubular steel ladder: a s
46、tandard ladder of (500 5) mm width and a wide ladder of (800 10) mm width. Details of the types of ladder are given in figures 4a and 4b. 5.4 Effluent cleaning attachment Legal requirements may make it necessary for equipment for collecting and washing the effluent to be fitted to the test chamber.
47、This equipment shall not cause a change in the air flow rate through the test chamber. BS EN 60332-3-10:2009!“!“! “ 8 60332-3-10 IEC:2000+A1:2008 6 Ignition source 6.1 Type As required by the test procedure the ignition source shall be one or two ribbon-type propane gas burners complete with venturi
48、 mixer, and their own set of flowmeters. The propane gas shall be technical grade propane of nominal 95 % purity. The flame-producing surface of the burner(s) shall consist of a flat metal plate through which 242 holes of 1,32 mm in diameter are drilled on 3,2 mm centres in three staggered rows of 8
49、1, 80 and 81 holes each to form an array having the nominal dimensions 257 mm 4,5 mm. As the burner plate may be drilled without the use of a drilling jig, the spacing of the holes may vary slightly. Additionally, a row of small holes may be milled on each side of the burner plate to serve as pilot holes with the function of keeping the flame burning. The burners are shown in figures 5a and 5b, and the placement of the holes in fi
