1、BRITISH STANDARDBS EN 50264-3-2:2008Railway applications Railway rolling stock power and control cables having special fire performance Part 3-2: Cables with crosslinked elastomeric insulation with reduced dimensions Multicore cables ICS 13.220.20; 29.060.20; 45.060.01g49g50g3g38g50g51g60g44g49g42g3
2、g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 50264-3-2:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 Au
3、gust 2008 BSI 2008ISBN 978 0 580 64074 2National forewordThis British Standard is the UK implementation of EN 50264-3-2:2008.The UK participation in its preparation was entrusted by Technical Committee GEL/20, Electric cables, to Subcommittee GEL/20/12, Railway cables.A list of organizations represe
4、nted on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/co
5、rrigenda issued since publicationDate CommentsEUROPEAN STANDARD EN 50264-3-2 NORME EUROPENNE EUROPISCHE NORM June 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat:
6、 rue de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50264-3-2:2008 E ICS 13.220.20; 29.060.20; 45.060.01 English version Railway applications - Railway rolling stock power and control cables
7、 having special fire performance - Part 3-2: Cables with crosslinked elastomeric insulation with reduced dimensions - Multicore cables Applications ferroviaires - Cbles de puissance et de contrle comportement au feu spcifi pour matriel roulant ferroviaire - Partie 3-2: Cbles enveloppe isolante rticu
8、le de faibles dimensions - Cbles multiconducteurs Bahnanwendungen - Starkstrom- und Steuerleitungen fr Schienenfahrzeuge mit verbessertem Verhalten im Brandfall - Teil 3-2: Leitungen mit vernetzter elastomerer Isolierung mit reduzierten Abmessungen - Mehr- und vieladrige Leitungen This European Stan
9、dard was approved by CENELEC on 2008-03-01. 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 lists and bibliographical references concern
10、ing 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 responsibility of a CENELEC member into it
11、s 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, Germany, Greece, Hungary, Iceland, Ireland,
12、Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 50264-3-2:2008 - 2 - Foreword This European Standard was prepared by Working Group 12, Railway cables, of the Technical Committee
13、 CENELEC TC 20, Electric cables, as part of the overall programme of work in the Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50264-3-2 on 2008-03-01. The following dat
14、es 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) 2009-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-03-01 _ BS EN 50264-3-2:2008- 3 -
15、 EN 50264-3-2:2008 Contents Introduction . 5 1 Scope 6 2 Normative references 6 3 Definitions 7 4 Rated voltage . 7 5 Marking and identification. . 7 5.1 Marking of cable 7 5.2 Core identification 8 5.3 Sheath . 8 6 Construction of cables 8 6.1 General 8 6.2 Conductor 8 6.3 Insulation system. 9 6.4
16、Laying up of cores and fillers 9 6.5 Metallic screen 9 6.6 Sheath . 9 6.7 Construction 10 7 Tests . 22 7.1 Definitions relating to tests 22 7.2 Conductor resistance 22 7.3 Voltage test . 22 7.4 Insulation resistance . 23 7.5 Dielectric strength on sample 23 7.6 Spark test 23 7.7 Surface resistance.
17、23 7.8 Ageing test 23 7.9 Hot set test 24 7.10 Compatibility 24 7.11 Water absorption test on sheath . 24 7.12 Ozone resistance 24 7.13 Mineral oil resistance 25 7.14 Fuel resistance 26 7.15 Acid and alkali resistance 26 7.16 Bending test at low temperature (cores and cables with OD 12,5 mm). 26 7.1
18、7 Cold elongation test (cores and cables with OD 12,5 mm) 27 7.18 Impact test at low temperature 27 7.19 Reaction to fire 27 7.20 Reaction to fire components 27 Annex A (normative) Code designation 31 Bibliography 31 BS EN 50264-3-2:2008EN 50264-3-2:2008 - 4 - Tables Table 1 - Multicore cables - uns
19、creened (300/500 V) 10 Table 2 - Multicore cables - screened (300/500 V) 12 Table 3 - Dimensions of core (0,6/1 kV) . 14 Table 4 - Two cores - (0,6/1 kV) unscreened . 15 Table 5 - Two cores - (0,6/1 kV) screened . 16 Table 6 - Three cores - (0,6/1 kV) unscreened. 17 Table 7 - Three cores - (0,6/1 kV
20、) screened. 18 Table 8 - Four cores - (0,6/1 kV) unscreened. 19 Table 9 - Four cores - (0,6/1 kV) screened. 20 Table 10 - Schedule of tests for cables 27 BS EN 50264-3-2:2008- 5 - EN 50264-3-2:2008 Introduction The EN 50264 series covers cables, based upon halogen free materials, for use in railway
21、rolling stock. It is divided into 5 parts under the generic title “Railway applications - Railway rolling stock power and control cables having special fire performance”. Part 1 General requirements Part 2-1 Cables with crosslinked elastomeric insulation Single core cables Part 2-2 Cables with cross
22、linked elastomeric insulation Multicore cables Part 3-1 Cables with crosslinked elastomeric insulation with reduced dimensions Single core cables Part 3-2 Cables with crosslinked elastomeric insulation with reduced dimensions Multicore cables Information regarding selection and installation of cable
23、s, including current ratings can be found in EN 50355 and EN 50343. The procedure for selection of cable cross-sectional area, including reduction factors for ambient temperature and installation type, is described in EN 50343. Special test methods referred to in EN 50264 are given in EN 50305. Part
24、 1, “General requirements”, contains a more extensive introduction to EN 50264, and should be read in conjunction with this Part 3-2. BS EN 50264-3-2:2008EN 50264-3-2:2008 - 6 - 1 Scope EN 50264-3-2 specifies requirements for, and constructions and dimensions of, multicore cables of the following ty
25、pes and voltage ratings: 300/500 V screened or unscreened (1 mm2, 1,5 mm2and 2,5 mm2, number of cores from 2 to 40); 0,6/1 kV screened or unscreened, (1,5 mm2to 50 mm2, 2, 3 and 4 cores). NOTE Not all conductor sizes or number of cores are specified for every type. All cables have class 5 tinned cop
26、per conductors to EN 60228, halogen-free insulation and halogen-free sheath. They are for use in railway rolling stock as fixed wiring, or wiring where limited flexing in operation is encountered. The requirements provide for a continuous conductor temperature not exceeding 90 C and a maximum temper
27、ature for short circuit conditions of 200 C based on a duration of 5 s. Under fire conditions the cables exhibit special performance characteristics in respect of maximum permissible flame propagation (flame spread) and maximum permissible emission of smoke and toxic gases. EN 50264-3-2 should be re
28、ad in conjunction with Part 1 “General requirements”. 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 (includi
29、ng any amendments) applies. EN 10002-1 Metallic materials Tensile testing Methods of test at ambient temperature EN 50264-1:2008 Railway applications Railway rolling stock power and control cables having special fire performance Part 1: General requirements EN 50266-2-4 Common test methods for cable
30、s under fire conditions Test for vertical flame spread of vertically-mounted bunched wires or cables Part 2-4: Procedures Category C EN 50266-2-5 Common test methods for cables under fire conditions Test for vertical flame spread of vertically-mounted bunched wires or cables Part 2-5: Procedures Sma
31、ll cables Category D EN 50305:2002 Railway applications Railway rolling stock cables having special fire performance Test methods EN 50334 Marking by inscription for the identification of cores of electric cables EN 60228 Conductors of insulated cables (IEC 60228) EN 60332-1-2 Tests on electric and
32、optical fibre cables under fire conditions Part 1-2: Test for vertical flame propagation for a single insulated wire or cable Procedure for 1 kW pre-mixed flame (IEC 60332-1-2) BS EN 50264-3-2:2008- 7 - EN 50264-3-2:2008 EN 60811-1-1:1995 Insulating and sheathing materials of electric and optical ca
33、bles Common test methods Part 1-1: General application Measurement of thickness and overall dimensions Tests for determining the mechanical properties (IEC 60811-1-1:1993) EN 60811-1-2:1995 Insulating and sheathing materials of electric cables Common test methods Part 1-2: General application Therma
34、l ageing methods (IEC 60811-1-2:1985 + A1:1989 + corr. May 1986) EN 60811-1-3:1995 Insulating and sheathing materials of electric and optical cables Common test methods Part 1-3: General application Methods for determining the density Water absorption tests Shrinkage test (IEC 60811-1-3:1993) EN 608
35、11-1-4:1995 Insulating and sheathing materials of electric and optical cables Common test methods Part 1-4: General application Tests at low temperature (IEC 60811-1-4:1985 + A1:1993 + corr. May 1986) EN 60811-2-1:1998 Insulating and sheathing materials of electric and optical cables Common test met
36、hods Part 2-1: Methods specific to elastomeric compounds Ozone resistance, hot set and mineral oil immersion tests (IEC 60811-2-1:1998) EN 61034-2 Measurement of smoke density of cables burning under defined conditions Part 2: Procedure and requirements (IEC 61034-2) HD 308 Identification of cores i
37、n cables and flexible cords 3 Definitions For the purposes of this document, the terms and definitions given in EN 50264-1 apply. 4 Rated voltage The rated voltage for multicore cables shall be as follows: a) 300/500 V (1 mm2to 2,5 mm2) control cables; b) 0,6/1 kV (1,5 mm2to 50 mm2) power cables. 5
38、Marking and identification 5.1 Marking of cable Cables shall be marked with the following: manufacturers name; EN reference; voltage rating (Uo); number of cores and conductor size; a code designation according to Annex A. If a cable is screened, an additional letter, S, shall be added. BS EN 50264-
39、3-2:2008EN 50264-3-2:2008 - 8 - An example of a complete mark is: XYZ EN 50264-3-2 300 V 37 x 1,5 FF S The marking shall conform to the requirements of EN 50264-1, Clause 5. 5.2 Core identification The cores of all cables, except the earthing conductor, shall be black unless otherwise specified. The
40、 identification of the individual core in a cable, except the earthing conductor, shall be by printed number or colour. The number shall be printed in a colour, which contrasts with the core colour. If a colour other than black is specified it shall be a clearly identifiable colour in accordance wit
41、h HD 308 and shall be durable. The colour shall be throughout the whole of the insulation or on its surface. Durability shall be checked by the test given in EN 50305, 10.1. The marking by numbers shall conform to EN 50334, unless otherwise specified, and conformity shall be checked by visual examin
42、ation and measurement. 5.3 Sheath The sheath shall be black unless otherwise agreed between the manufacturer and purchaser. 6 Construction of cables 6.1 General Cores complying with this part or EN 50264-3-1 may be used as components of multicore cables The control cable dimensions shall be as given
43、 in Tables 1 or 2 as appropriate to the cable type. The power cable core dimensions shall be as given in Table 3 and the other cable dimensions as given in Tables 4 to 9 as appropriate to the cable type. If agreed between the purchaser and manufacturer, cables may be made with a number of cores not
44、specified in Tables 1 and 2. In such cases the thickness of the sheath and diameter of the braid wire (if any) shall be those specified in the relevant table for the cable containing the next higher number of cores. 6.2 Conductor Conductors shall be tin-coated annealed copper, class 5, according to
45、EN 60228. When tested in accordance with EN 10002-1 the minimum average elongation of the wires from the conductor shall be 15 %, with a minimum value of 10 % for any individual wire. NOTE It is not necessary to test all individual wires. 5 % of wires or 10 wires, whichever is the least number, shou
46、ld be selected at random. BS EN 50264-3-2:2008- 9 - EN 50264-3-2:2008 6.3 Insulation system The insulation shall be one or more extruded materials as defined in EN 50264-1 applied so as to meet the requirements of compound type EI 106 to EI 110: EI 106 low temperature resistant, oil resistant; EI 10
47、7 extra low temperature resistant, oil resistant; EI 108 low temperature resistant, extra oil and fuel resistant; EI 109 extra low temperature resistant, extra oil and fuel resistant; EI 110 extra low temperature resistant, non oil resistant. To claim extra low temperature performance both insulatio
48、n and sheaths shall be extra low temperature resistant. The insulation shall be applied to meet the requirements of EN 50264-1, 6.2. The insulation thickness shall conform to the specified value given in Tables 1 to 3. 6.4 Laying up of cores and fillers The cores shall be twisted together with eithe
49、r a continuous right or left-hand direction of lay. The pitch or lay for primary cores shall not be greater than 20 times the diameter of the bunch of cores in the cable. NOTE Non-hygroscopic fillers may be applied as given in EN 50264-1, 6.3. A synthetic binder tape may be used over the laid-up assembly at the manufacturers discretion. 6.5 Metallic screen Where screens are applied over cores a tape shall be used between cores and screens. The me
