SIST EN 50264-1:2003
(Main)Railway applications - Railway rolling stock cables having special fire performance - Standard wall -- Part 1: General requirements
Railway applications - Railway rolling stock cables having special fire performance - Standard wall -- Part 1: General requirements
Superseded by EN 50264-1:2008
Bahnanwendungen - Kabel und Leitungen für Schienenfahrzeuge mit verbessertem Verhalten im Brandfall - Standard Isolierwanddicken -- Teil 1: Allgemeine Anforderungen
Applications ferroviaires - Câbles pour matériel roulant ferroviaire ayant des performances particulières de comportement au feu - Câbles à isolation d'épaisseur normale -- Partie 1: Prescriptions générales
Railway applications - Railway rolling stock cables having special fire performance - Standard wall - Part 1: General requirements
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Railway applications - Railway rolling stock cables having special fire performance - Standard wall - Part 1: General requirementsBahnanwendungen - Kabel und Leitungen für Schienenfahrzeuge mit verbessertem Verhalten im Brandfall - Standard Isolierwanddicken -- Teil 1: Allgemeine AnforderungenApplications ferroviaires - Câbles pour matériel roulant ferroviaire ayant des performances particulières de comportement au feu - Câbles à isolation d'épaisseur normale -- Partie 1: Prescriptions généralesRailway applications - Railway rolling stock cables having special fire performance - Standard wall -- Part 1: General requirements45.060.01Železniška vozila na splošnoRailway rolling stock in general29.060.20KabliCables13.220.20Fire protectionICS:Ta slovenski standard je istoveten z:EN 50264-1:2002SIST EN 50264-1:2003en01-februar-2003SIST EN 50264-1:2003SLOVENSKI
STANDARD
SIST EN 50264-1:2003
EUROPEAN STANDARDEN 50264-1NORME EUROPÉENNEEUROPÄISCHE NORMAugust 2002CENELECEuropean Committee for Electrotechnical StandardizationComité Européen de Normalisation ElectrotechniqueEuropäisches Komitee für Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B - 1050 Brussels© 2002 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 50264-1:2002 EICS 13.220.20; 29.060.20; 45.060.01English versionRailway applications -Railway rolling stock cables having special fire performance -Standard wallPart 1: General requirementsApplications ferroviaires -Câbles pour matériel roulant ferroviaireayant des performances particulièresde comportement au feu -Câbles à isolation d'épaisseur normalePartie 1: Prescriptions généralesBahnanwendungen -Kabel und Leitungen für Schienen-fahrzeuge mit verbessertem Verhaltenim Brandfall -Standard IsolierwanddickenTeil 1: Allgemeine AnforderungenThis European Standard was approved by CENELEC on 2002-03-01. CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member.This European Standard exists in three official versions (English, French, German). A version in anyother language made by translation under the responsibility of a CENELEC member into its ownlanguage and notified to the Central Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.SIST EN 50264-1:2003
EN 50264-1:2002- 2 -ForewordThis European Standard was prepared for Technical Committee CENELEC TC 20 “Electriccables” by Working Group 12 “Railway cables” as part of the overall programme of work inCENELEC TC 9X “Electrical and electronic applications for railways”.The text of the draft was submitted to the formal vote and was approved by CENELEC asEN 50264-1 on 2002-03-01.The following dates were fixed:-latest date by which the EN has to be implementedat national level by publication of an identicalnational standard or by endorsement(dop)2003-07-01-latest date by which the national standards conflictingwith the EN have to be withdrawn(dow)2008-07-01SIST EN 50264-1:2003
- 3 -EN 50264-1:2002ContentsPageIntroduction.41
Scope.52
Normative references.53
Definitions.64
Rated voltage.75
Marking.86
General requirements for the construction of cables.97
Electrical
performance.138
Reaction to fire - Cables.139
Reaction to fire - Components.14Bibliography.21Figure 1 - Example of marking.9Table 1 - Rated voltages.8Table 2 - Requirements for the tests for non halogenated insulating compounds.16Table 3 - Requirements for test for fillers, tapes and binders.18Table 4 - Requirements for the tests for non halogenated sheathing compounds.19SIST EN 50264-1:2003
EN 50264-1:2002- 4 -IntroductionThe railway industry is generally concerned with the movement of people as well as goods.It is therefore essential that a high level of safety is achieved, even when failures occurwhich may involve fire, howsoever caused, affecting railway rolling stock.Hence it is necessary to provide cables for use in railway environments which minimize thehazard to people when a fire may damage the cable, irrespective of whether the fire iscaused by an external source or from within the electrical system.European Standard EN 50264 specifies cables which, in the event of fire, will limit the riskto people and improve the safety on railways in general. It covers cables with standard wallthickness of insulation, both sheathed and unsheathed, based on halogen free materials,for use in railway rolling stock. In the event of a fire affecting cables to EN 50264 they willhave a limited flame spread and limited emission of toxic gases. In addition these cableswhen burnt, produce limited amounts of smoke. This last characteristic will minimize loss ofvisibility in the event of a fire and will aid reduced evacuation times.The objects of this standard are-to standardize cables that are safe
and reliable when properly used,-to state the characteristics, performance, and construction requirements directly orindirectly bearing on safety,-to specify methods for checking conformity with these requirements.EN 50264, which covers a range of cables rated at up to 3,6/6 kV with conductor sizes1,0 mm2 up to 400 mm2, is divided into 3 parts:Part 1: General requirements;Part 2: Single core cables;Part 3: Multicore cables.These cables are intended for a limited number of applications. Further information onthese applications is given in the guide to use (EN 50355 – under development).Special test methods referred to in EN 50264 are given in EN 50305.A separate European Standard, EN 50306 covers cables for similar applications but withthin wall insulation, restricted to 300 V rating and a maximum conductor size of 2,5 mm2.SIST EN 50264-1:2003
- 5 -EN 50264-1:20021ScopePart 1 of EN 50264 specifies the general requirements applicable to the cables given inpart 2 and part 3 of EN 50264. It includes the detailed requirements for the insulating andsheathing materials and other components called up in the separate parts.
In particularEN 50264-1 specifies those requirements relating to fire safety which enable the cables tosatisfy Hazard Levels 2, 3 and 4 of EN 45545-1.NOTE 1
Requirements for the emission of smoke and gases are not specified for Hazard Level 1 ofEN 45545-1.NOTE 2
EN 45545-1 is still under development and should be consulted.Based on proven experience and reliability over many years these cables are rated foroccasional thermal stresses causing ageing equivalent to continuous operational life at atemperature of 90 oC. The maximum temperature for short circuit conditions is 200 oC basedon a duration of 5 seconds.This part 1 should be used in conjunction with the other parts of EN 50264.2Normative referencesThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text andthe publications are listed hereafter. For dated references, subsequent amendments to orrevisions of these references apply to this European Standard only when incorporated in itby amendment or revision. For undated references the latest edition of the publicationreferred to applies.EN 10002-1Tensile testing of metallic materials - Method of test at ambienttemperatureEN 45545-11)Railway applications - Fire protection of railway vehicles -Part 1: GeneralEN 50264-2Railway applications - Railway rolling stock cables having special fireperformance - Standard wall - Part 2: Single core cablesEN 50264-3Railway rolling stock cables having special fire performance - Standardwall - Part 3: Multicore cablesEN 50265-2-1Common test methods for cables under fire conditions - Test forresistance to vertical flame propagation for a single insulated conductoror cable - Part 2-1: Procedures - 1 kW pre-mixed flameEN 50266-2-4Common test methods for cables under fire conditions - Test for verticalflame spread of vertically-mounted bunched wires or cables -Part 2-4: Procedures - Category CEN 50267-2-1Common test methods for cables under fire conditions - Tests ongasses evolved during combustion of materials from cables -Part 2-1: Procedures - Determination of the amount of halogen acid gas
1) At draft stage.SIST EN 50264-1:2003
EN 50264-1:2002- 6 -EN 50267-2-2Common test methods for cables under fire conditions - Tests on gasesevolved during combustion of materials from cables -Part 2-2: Procedures - Determination of degree of acidity of gases formaterials by measuring pH and conductivityEN 50268-2Common test methods for cables under fire conditions - Measurementof smoke density of cables burning under defined conditions -Part 2: ProcedureEN 50305Railway applications - Railway rolling stock cables having special fireperformance - Test methodsEN 50334Marking by inscription for the identification of cores of electric cablesEN 60684-2Flexible insulating sleeving - Part 2: Methods of testEN 60811-1-1Insulating and sheathing materials of electric and optical cables -Common test methods - Part 1-1: General application - Measurement ofthickness and overall dimensions - Tests for determining themechanical propertiesEN 60811-1-2Insulating and sheathing materials of electric cables - Common testmethods - Part 1-2: General application - Thermal ageing methodsEN 60811-1-3Insulating and sheathing materials of electric cables - Common testmethods - Part 1-3: General application - Methods for determining thedensity - Water absorption tests - Shrinkage testEN 60811-1-4Insulating and sheathing materials of electric cables - Common testmethods - Part 1-4: General application - Tests at low temperatureEN 60811-2-1Insulating and sheathing materials of electric cables - Common testmethods - Part 2-1: Methods specific to elastomeric compounds -Ozone resistance test - Hot set test - Mineral oil immersion testHD 383Conductors of insulated cables - First supplement: Guide to thedimensional limits of circular conductors3DefinitionsFor the purposes of all parts of EN 50264, the following definitions apply.The types or combination of insulating and sheathing compounds covered in this EN arelisted below.3.1cross-linked ethylene propylene rubber (EPR)a compound based on ethylene propylene rubber or similar (EPM or EPDM) which whencross-linked complies with the requirements given in the particular specifications3.2cross-linked ethylene copolymersa compound in which the characteristic constituent is a copolymer of ethylene such as EVAor other, which, when cross linked, complies with the requirements given in the particularspecificationsSIST EN 50264-1:2003
- 7 -EN 50264-1:20023.3type of compoundcategory, designated by one or several characteristics, in which a compound is placedaccording to its properties, as determined by specific testsNOTE
The type designation is not directly related to the composition of the compound. See also 6.2.1 and6.6.1.3.4halogen-free materialcombustible material which, when tested in accordance with the designated method,conforms to the following:maximum evolution of HCl-0,5 % to EN 50267-2-1minimum pH-4,3 to EN 50267-2-2maximum conductivity-10,0 S/mm to EN 50267-2-2NOTE
This value of maximum conductivity is subject to further consideration and review.maximum fluorine content-0,1 % to EN 60684-23.5type tests (Symbol T)tests required to be made before supplying a type of cable covered by this standard on ageneral commercial basis in order to demonstrate satisfactory performance characteristicsto meet the intended application. These tests are of such a nature that, after they havebeen made, they need not be repeated unless changes are made in the cable materials,design or type of manufacturing process which might change the performancecharacteristics3.6sample tests (Symbol S)tests made on samples of completed cable, or components taken from a completed cableadequate to verify that the finished product meets the design specification3.7routine tests (Symbol R)tests made on all complete cable lengths to demonstrate their integrity4Rated voltageThe rated voltage of a cable is the reference voltage for which the cable is designed, andwhich serves to define the electrical tests.The rated voltage V is expressed by the combination of the following values (in volts):Uo/U(Um)Uo is the r.m.s. value between any insulated conductor and earth, i.e. metalcovering of the cable or the surrounding medium, e.g.Uo = 600 V;Uis the r.m.s. value between any two phase-conductors of a multicore cableor of a system of single-core cables, e.g. U = 1 000 V;Umis the maximum r.m.s. value of the "highest system voltage" for which theequipment may be used, e.g.Um = 1 200 V.SIST EN 50264-1:2003
EN 50264-1:2002- 8 -In an alternating current system, the rated voltage of a cable shall be at least equal to thenominal voltage of the system for which it is intended.In a direct current system, the cables shall have a maximum voltage against earth (Vo) notexceeding 1,5 times the rated voltage(Uo) of the cable, whereVois the d.c. value between any insulated conductor and earth, i.e. metalcovering of the cable or the surrounding medium, e.g.Vo = 900 V.The rated voltage recognized for the purposes of all parts of EN 50264 shall be as given inTable 1.NOTE
In the railway industry it is common practice to identify cables and systems by the value of Uo, not themore usual normal practice of U.Table 1 - Rated voltagesRated voltageVAll values are in voltsUoUUmVo
* 300
* 500
* 600
* 450 6001 0001 200 9001 8003 0003 6002 7003 6006 0007 2005 400* Multicore cables only.NOTE
See Guide to Use (EN 50355 under development) for further information.5Marking5.1Indication of originCables shall be provided with an identification of origin consisting of the continuous markingof either the manufacturer’s name or trademark or registered identification number, by oneof the following methods:1) a printed tape within the cable;2) printing, indenting or embossing on the outer surface of
sheathed cable;3) printing on the outer surface of single core cables;4) printing on the insulation of at least one core.NOTE
Additional markings may be specified in EN 50264-2 or EN 50264-3.5.2Continuity of marksEach specified mark shall be regarded as continuous if the distance between the end of themark and the beginning of the next identical mark does not exceeda)550 mm if the marking is on the outer surface of the cable;b)275 mm if the marking is on the insulation or on a tape.SIST EN 50264-1:2003
- 9 -EN 50264-1:2002NOTE 1
A "specified mark" is any mandatory mark covered by this part of EN 50264 or by the particularrequirements of part 2 or 3.NOTE 2
An example of marking on the outer surface of the cable is given in Figure 1.Figure 1 - Example of markingConformity shall be checked by visual examination and measurement.5.3DurabilityPrinted markings shall be durable. Compliance shall be checked by the test given in 10.1 ofEN 50305.5.4LegibilityAll markings shall be legible.Printed markings shall be in contrasting colours.5.5Additional markingAdditional marking, specific to the individual cable type, shall be given in the particularspecification.5.6Use of the name CENELECThe name CENELEC, in full or abbreviated, shall not be directly marked on, or in, thecables.6General requirements for the construction of cables6.1Conductors6.1.1MaterialThe conductors shall be tin-coa
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