EN 50355:2013

SLOVENSKI STANDARD
01-maj-2014
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SIST EN 50355:2004
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Railway applications - Railway rolling stock cables having special fire performance -
Guide to use
Bahnanwendungen - Kabel und Leitungen für Schienenfahrzeuge mit verbessertem
Verhalten im Brandfall - Leitfaden für die Verwendung
Applications ferroviaires - Câbles à comportement au feu spécifié pour matériel roulant
ferroviaire - Guide d'emploi
Ta slovenski standard je istoveten z: EN 50355:2013
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 50355
NORME EUROPÉENNE
August 2013
EUROPÄISCHE NORM
ICS 13.220.20; 29.060.20; 45.060.01 Supersedes EN 50355:2003

English version
Railway applications -
Railway rolling stock cables having special fire performance -
Guide to use
Applications ferroviaires -  Bahnanwendungen -
Câbles à comportement au feu spécifié Kabel und Leitungen für
pour matériel roulant ferroviaire - Schienenfahrzeuge mit verbessertem
Guide d'emploi Verhalten im Brandfall -
Leitfaden für die Verwendung
This European Standard was approved by CENELEC on 2013-07-01. 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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50355:2013 E
CONTENTS
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms, definitions and abbreviations.7
4 Requirements for safety .7
5 Fire . 10
6 Limiting conditions . 11
7 Cable designation . 16
8 Initial and periodic inspections . 16
9 Electrical test after installation. 16
Annex A (informative) Recommended current ratings for railway rolling stock cables . 31
Annex B (informative) Recommended short-circuit current ratings for rolling stock
cables of 90 °C maximum conductor temperature . 34
Bibliography . 36

Figure 1 — Definition of internal bending radius . 15

Table 1 - Properties Available .9
Table 2 - Voltages . 11
Table 3 - Temperature for expected lifetime according to reference standard . 14
Table 4 - Single-core cables Standard wall EN 50264-2-1 and reduced wall EN 50264-
3-1 18
Table 5 - Single-core cables Use conditions Standard wall EN 50264-2-1 and reduced
wall EN 50264-3-1 . 19
Table 6 - Multicore cables Standard wall EN 50264-2-2 and reduced wall EN 50264-3-2 . 20
Table 7 - Multicore cables Use conditions Standard wall EN 50264-2-2 and reduced
wall EN 50264-3-2 . 21
Table 8 - Single-core cables EN 50382-2 . 22
Table 9 - Single-core cables Use conditions EN 50382-2 . 23
Table 10 - Single-core cables Thin wall insulation, thin wall sheathed EN 50306-2 and -
3 24
Table 11 - Single-core cables Use conditions Thin wall insulation, thin wall sheathed
EN 50306-2 and -3 . 25
Table 12 - Multicore cables (pairs, triples and quads) Thin wall insulation, thin wall
sheathed EN 50306-3 . 26
Table 13 - Multicore cables (pairs, triples and quads) Use conditions Thin wall
insulation, thin wall sheathed EN 50306-3 . 27
Table 14 - Multicore and Multipair cables Thin wall insulation, Standard wall sheathed
EN 50306-4 . 28
Table 15 - Multicore and Multipair cables Use conditions Thin wall insulation, Standard
wall sheathed EN 50306-4 . 29

- 3 - EN 50355:2013 (E)
Table 16 - Minimum bending radii . 30
Table A.1 - Railway applications – Cables for railway rolling stock , for 90 °C
maximum conductor temperature, Current ratings. 32
Table A.2 - Derating factors for other ambient temperatures . 33
Table A.3 - Correction factors for other maximum conductor temperatures. 33
Table B.1 - Recommended short-circuit current ratings for rolling stock cables of 90 °C
maximum conductor temperature EN 50264 and EN 50382 . 34
Table B.2 - Value of K . 35

Foreword
This document (EN 50355:2013) has been prepared by CLC/TC 20 "Electric cables" by Working
Group 12 “Railway cables” as part of the overall programme of work in the Technical Committee
CENELEC TC 9X “Electrical and electronic applications for railways”.
The following dates are fixed:
• latest date by which this document has to be
(dop) 2014-07-01
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards
(dow) 2016-07-01
conflicting with this document have to
be withdrawn
This document supersedes EN 50355:2003.
- requirements for additional cable type: EN 50264-3-1, EN 50264-3-2 and EN 50382-2;
- modified voltage table.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
- 5 - EN 50355:2013 (E)
Introduction
The railway industry is generally concerned with the movement of people as well as goods. It
is therefore essential that safety is achieved, even when failures occur which may involve fire,
however 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 aims of this European Standard are to:
– inform railway vehicle manufacturers, installers of cables and railway operators of the
properties and limiting conditions of rolling stock cables in order to safeguard life and
equipment;
– avoid misuse of rolling stock cables.
The information is given as limiting values and illustrated by examples which cannot be
exhaustive but nevertheless indicate ways by which safety (a tolerable level of risk) can be
obtained.
It has been assumed in the preparation of this guidance document that the execution of its
provisions will be entrusted to appropriately qualified and experienced people, for whose use
it has been produced.
This European Standard should be used in conjunction with:
 EN 50264 series, Railway applications — Railway rolling stock power and control cables
having special fire performance
 EN 50306 series, Railway applications — Railway rolling stock cables having special fire
performance — Thin wall
 EN 50382 series, Railway applications — Railway rolling stock high temperature power
cables having special fire performance
 EN 50343, Railway applications — Rolling stock — Rules for installation of cabling

1 Scope
This European Standard gives guidance on the safe use of rolling stock cables specified in
EN 50264, EN 50306 and EN 50382.These cables will only be used for the wiring of railway
rolling stock and within the limits given in the manner described in this European Standard. All
these cables are for fixed installation where there is no free movement of cable, except for
stresses due to typical service.
This European Standard will be applied in conjunction with the relevant product and
installation standards. Stricter requirements than those given in this standard could be
necessary; see in particular EN 50343.
This European Standard is not applicable to:
– intercarriage jumpers;
– cables subject to continual flexing;
– pantograph cables;
– coaxial, data and fibre optic cables;
– wire wrap;
– cables rated at voltages greater than 3,6/6 kV;
– applications other than the cabling of railway rolling stock;
– cables requiring circuit integrity.
Legal or statutory requirements do take precedence over the guidance given in this document.
In cases where no guidance exists or where it cannot be derived from general information, it
is recommended that advice be sought from the cable manufacturer.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 50121-1 Railway applications — Electromagnetic compatibility — Part 1: General
EN 50125-1 Railway applications – Environmental conditions for equipment — Part 1:
Equipment on board rolling stock
EN 50163 Railway Applications — Supply voltages of traction systems
EN 50200 Method of test for resistance to fire of unprotected small cables for use in
emergency circuits
EN 50264-2-1 Railway applications — Railway rolling stock power and control cables
having special fire performance — Part 2-1: Cables with crosslinked
elastomeric insulation — Single core cables
EN 50264-2-2 Railway applications — Railway rolling stock power and control cables
having special fire performance — Standard wall — Part 2-2:Cables with
crosslinked elastomeric insulation — Multicore cables

- 7 - EN 50355:2013 (E)
EN 50264-3-1 Railway applications — Railway rolling stock power and control cables
having special fire performance — Part 3-1: Cables with crosslinked
elastomeric insulation with reduced dimensions — Single core cables
EN 50264-3-2 Railway 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
EN 50306-2 Railway applications — Railway rolling stock cables having special fire
performance — Thin wall — Part 2: Single core cables
EN 50306-3 Railway applications — Railway rolling stock cables having special fire
performance — Thin wall — Part 3: Single core and multicore cables (pairs,
triples and quads) screened and thin wall sheathed
EN 50306-4 Railway applications — Railway rolling stock cables having special fire
performance — Thin wall — Part 4: Multicor
...