EN 50264-1:2008
(Main)Railway applications - Railway rolling stock power and control cables having special fire performance - Part 1: General requirements
Railway applications - Railway rolling stock power and control cables having special fire performance - Part 1: General requirements
EN 50264-1 specifies the general requirements applicable to the cables given in all other parts of EN 50264. It includes the detailed requirements for the insulating and sheathing materials and other components called up in the separate parts. In particular EN 50264-1 specifies those requirements relating to fire safety. Based on proven experience and reliability over many years these cables are rated for occasional thermal stresses causing ageing equivalent to continuous operational life at a conductor temperature of 90 °C. NOTE This rating is based upon the polymers defined in 3.1 and 3.2. Before these polymers had gained widespread acceptance in the cable industry, ageing performance had been assessed via long-term thermal endurance testing and had been extrapolated to 20 000 h using techniques equivalent to those in EN 60216 (series). Subsequent experience in service has demonstrated that the predicted performance levels were correct. Where extrapolated data is used to predict lifetime in service it should be confirmed with the cable manufacturer, and should be on the basis of a failure mode appropriate to the type of material or cable. The maximum conductor temperature for short circuit conditions is 200 °C based on a duration of 5 s. This Part 1 should be read in conjunction with the other parts of EN 50264.
Bahnanwendungen - Starkstrom- und Steuerleitungen für Schienenfahrzeuge mit verbessertem Verhalten im Brandfall - Teil 1: Allgemeine Anforderungen
EN 50264-1 legt die allgemeinen Anforderungen für Leitungen nach allen anderen Teilen von EN 50264 fest. Er enthält die detaillierten Anforderungen an die Isolier- und Mantelmaterialien und anderen Komponenten, die in den einzelnen Teilen angesprochen werden. Insbesondere legt EN 50264-1 die Anforderungen fest, die sich auf die Brandsicherheit beziehen. Aufgrund guter Erfahrung und Zuverlässigkeit über viele Jahre sind diese Leitungen für gelegentliche thermische Beanspruchung ausgelegt, die zu einer Alterung führen, die einem kontinuierlichen Betriebszustand bei 90 °C entsprechen. ANMERKUNG Die Bemessung basiert auf den Polymeren, die in 3.1 und 3.2 definiert sind. Bevor diese Polymere breite Anerkennung in der Kabelindustrie gewonnen hatten, wurden die Alterungseigenschaften durch thermische Langzeituntersuchungen ermittelt und unter Verwendung von Techniken, die denen in EN 60216 (Reihe) entsprechen, auf 20 000 h extrapoliert. Darauf basierende Erfahrungen im Betrieb haben gezeigt, dass die vorausgesagten Verhaltensstufen korrekt waren. Werden extrapolierte Daten verwendet, um die Lebensdauer im Betrieb vorherzusagen, sollten sie mit dem Hersteller der Leitung abgestimmt werden und sollten auf einer für den Werkstofftyp der Leitung geeigneten Fehlerart basieren. Die maximale Kurzschlusstemperatur am Leiter beträgt 200 °C bei 5 s Dauer. Dieser Teil 1 ist in Verbindung mit den anderen Teilen von EN 50264 anzuwenden.
Applications ferroviaires - Câbles de puissance et de contrôle à comportement au feu spécifié pour matériel roulant ferroviaire - Partie 1: Prescriptions générales
La EN 50264-1 spécifie les prescriptions générales applicables aux câbles faisant l’objet de toutes les autres parties de la EN 50264. Elle comporte les prescriptions détaillées pour les matériaux d’isolation et de gainage ainsi que celles des autres composants cités dans les autres parties. En particulier la EN 50264-1 spécifie les prescriptions relatives au comportement au feu. Basés sur une expérience éprouvée, et fiable de plusieurs années, ces câbles sont définis pour des contraintes thermiques occasionnelles entraînant un vieillissement équivalant à celui d’un régime permanent à la température de 90 °C au niveau de l’âme. NOTE Cette définition est basée sur les polymères définis en 3.1 et 3.2. Avant que ces polymères ne soient acceptés dans l’industrie du câble, des performances de vieillissement ont été évaluées au travers d’essais thermiques de longue durée et ont été extrapolés à 20 000 h en utilisant les techniques de la série EN 60216. Les expériences en service ont démontré que les niveaux de performances prédits sont corrects. Lorsque l’extrapolation des résultats est utilisée pour évaluer la durée de vie en service, il est recommandé qu’elle soit confirmée par le fabricant de câbles, et qu’elle soit fondée sur le mode de défaut approprié au type de matériau ou de câble.
Železniške naprave - Energetski in krmilni kabli za železniška vozna sredstva, ki imajo posebne ognjevarne lastnosti - 1. del: Splošne zahteve
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2008
1DGRPHãþD
SIST EN 50264-1:2003
Železniške naprave - Energetski in krmilni kabli za železniška vozna sredstva, ki
imajo posebne ognjevarne lastnosti - 1. del: Splošne zahteve
Railway applications - Railway rolling stock power and control cables having special fire
performance -- Part 1: General requirements
Bahnanwendungen - Starkstrom- und Steuerleitungen für Schienenfahrzeuge mit
verbessertem Verhalten im Brandfall -- Teil 1: Allgemeine Anforderungen
Applications ferroviaires - Câbles de puissance et de contrôle à comportement au feu
spécifié pour matériel roulant ferroviaire -- Partie 1: Prescriptions générales
Ta slovenski standard je istoveten z: EN 50264-1:2008
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
29.060.20 Kabli Cables
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 50264-1
NORME EUROPÉENNE
June 2008
EUROPÄISCHE NORM
ICS 13.220.20; 29.060.20; 45.060.01 Supersedes EN 50264-1:2002
English version
Railway applications -
Railway rolling stock power and control cables
having special fire performance -
Part 1: General requirements
Applications ferroviaires - Bahnanwendungen -
Câbles de puissance et de contrôle Starkstrom- und Steuerleitungen
à comportement au feu spécifié für Schienenfahrzeuge
pour matériel roulant ferroviaire - mit verbessertem Verhalten im Brandfall -
Partie 1: Prescriptions générales Teil 1: Allgemeine Anforderungen
This European Standard 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 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 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: 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 50264-1:2008 E
Foreword
This European Standard was prepared by Working Group 12, Railway cables, of the Technical Committee
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 50264-1 on
2008-03-01.
This European Standard supersedes EN 50264-1:2002.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2009-03-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2011-03-01
with the EN have to be withdrawn
__________
– 3 – EN 50264-1:2008
Contents
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Definitions . 6
4 Rated voltage . 7
5 Marking . 8
5.1 Indication of origin . 8
5.2 Code designation . 8
5.3 Continuity of marks. 8
5.4 Durability . 9
5.5 Legibility . 9
5.6 Use of the name CENELEC . 9
6 General requirements for the construction of cables . 9
6.1 Conductors . 9
6.2 Insulation system. 10
6.3 Fillers, tapes and inner coverings . 11
6.4 Metallic screen . 11
6.5 Sheath . 12
6.6 Overall diameter . 13
7 Electrical performance . 13
8 Reaction to fire – Cables . 13
8.1 Flame propagation (flame spread) – Single vertical cable . 13
8.2 Flame propagation (flame spread) – Bunched cables . 13
8.3 Smoke emission . 13
9 Reaction to fire – Components . 14
9.1 Assessment of halogens . 14
9.2 Toxicity . 14
Annex A (normative) Requirements for halogens . 25
Annex B (normative) Determination of halogens – Elemental test . 27
Annex C (normative) Preparation of test pieces for physical tests . 29
Annex D (normative) Thickness and overall diameter – Selection of samples and calculation of results . 30
Annex E (informative) Guidance on selection of cables for type approval . 32
Bibliography . 33
Figures
Figure 1 – Example of marking . 9
Tables
Table 1 – Rated voltages . 8
Table 2a – Requirements for the tests for halogen free insulating compounds for Part 2-1 and Part 2-2 . 15
Table 2b – Requirements for the tests for halogen free insulating compounds for Part 3-1 and Part 3-2 . 18
Table 3 – Requirements for the tests for fillers, tapes and binders . 21
Table 4 – Requirements for the tests for halogen free sheathing compounds. 22
Table A.1 – Type test . 25
Table A.2 – Sample test . 25
Introduction
The 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 occur which may involve fire, howsoever
caused, affecting railway rolling stock.
Hence it is necessary to provide cables for use in railway environments which minimise the hazard to people
when a fire may damage the cable, irrespective of whether the fire is caused by an external source or from
within the electrical system.
The EN 50264 series specifies cables for power, control and associated circuits which, in the event of fire,
will limit the risk to people and improve the safety on railways in general. It covers sheathed and unsheathed
cables with insulation and sheath based on halogen free materials, for use in railway rolling stock. In the
event of a fire affecting cables to EN 50264 they will have a limited flame spread and limited emission of
toxic gases. In addition these cables when burnt, produce limited amounts of smoke. This last characteristic
will minimise loss of visibility in the event of a fire and will aid reduced evacuation times.
The objects of this standard are
– to standardise cables that are safe and reliable when properly used,
– to state the characteristics, performance, and construction requirements directly or indirectly 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 sizes 1,0 mm² up to
400 mm², 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 crosslinked 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.
These cables are intended for a limited number of applications. Further information on these applications is
given in the guide to use, i.e. EN 50355.
Information regarding selection and installation of cables, 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.
A separate European Standard, EN 50306 (series), covers cables for similar applications but with thinner
wall thickness of both insulation and sheath, leading to reduced overall cable diameters. These cables are
restricted to 300 V rating and a maximum conductor size of 2,5 mm². A separate European Standard,
EN 50382 (series), covers high temperature cables. The range of cables covered is rated at up to 3,6/6 kV
with conductor sizes 1,5 mm² to 400 mm².
– 5 – EN 50264-1:2008
1 Scope
EN 50264-1 specifies the general requirements applicable to the cables given in all other parts of EN 50264.
It includes the detailed requirements for the insulating and sheathing materials and other components called
up in the separate parts. In particular EN 50264-1 specifies those requirements relating to fire safety.
Based on proven experience and reliability over many years these cables are rated for occasional thermal
stresses causing ageing equivalent to continuous operational life at a conductor temperature of 90 °C.
NOTE This rating is based upon the polymers defined in 3.1 and 3.2. Before these polymers had gained widespread acceptance in the
cable industry, ageing performance had been assessed via long-term thermal endurance testing and had been extrapolated to 20 000 h
using techniques equivalent to those in EN 60216 (series). Subsequent experience in service has demonstrated that the predicted
performance levels were correct. Where extrapolated data is used to predict lifetime in service it should be confirmed with the cable
manufacturer, and should be on the basis of a failure mode appropriate to the type of material or cable.
The maximum conductor temperature for short circuit conditions is 200 °C based on a durat
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