SIST EN 50264-3-1:2008

SLOVENSKI STANDARD
SIST EN 50264-3-1:2008
01-september-2008
Železniške naprave - Energetski in krmilni kabli za železniška vozna sredstva, ki
imajo posebne ognjevarne lastnosti - 3-1. del: Kabli z zamreženo elastomerno
izolacijo z zmanjšanimi merami - Enožilni kabli
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
Bahnanwendungen - Starkstrom- und Steuerleitungen für Schienenfahrzeuge mit
verbessertem Verhalten im Brandfall -- Teil 3-1: Leitungen mit vernetzter elastomerer
Isolierung mit reduzierten Abmessungen - Einadrige Leitungen
Applications ferroviaires - Câbles de puissance et de contrôle à comportement au feu
spécifié pour matériel roulant ferroviaire -- Partie 3-1: Câbles à enveloppe isolante
réticulée de faibles dimensions - Câbles monoconducteurs
Ta slovenski standard je istoveten z: EN 50264-3-1:2008
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
SIST EN 50264-3-1:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50264-3-1:2008

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SIST EN 50264-3-1:2008


EUROPEAN STANDARD
EN 50264-3-1

NORME EUROPÉENNE
June 2008
EUROPÄISCHE NORM

ICS 13.220.20; 29.060.20; 45.060.01



English version


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



Applications ferroviaires - Bahnanwendungen -
Câbles de puissance et de contrôle Starkstrom- und Steuerleitungen
à comportement au feu spécifié für Schienenfahrzeuge mit verbessertem
pour matériel roulant ferroviaire - Verhalten im Brandfall -
Partie 3-1: Câbles à enveloppe isolante Teil 3-1: Leitungen mit vernetzter
réticulée de faibles dimensions - elastomerer Isolierung
Câbles monoconducteurs mit reduzierten Abmessungen -
Einadrige Leitungen


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 50264-3-1:2008 E

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SIST EN 50264-3-1:2008
EN 50264-3-1:2008 - 2 -
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 50264-3-1 on
2008-03-01.
The 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) 2009-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-03-01
__________

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Contents

Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Definitions . 6
4 Rated voltage . 6
5 Marking and identification. . 6
5.1 Marking of cable . 6
5.2 Core identification. 7
5.3 Sheath . 7
6 Construction of cables . 7
6.1 General . 7
6.2 Conductor . 7
6.3 Conductor screening . 7
6.4 Separator . 7
6.5 Insulation system. 8
6.6 Sheath . 8
6.7 Constructional components . 8
7 Tests . 14
7.1 Definitions relating to tests . 14
7.2 Conductor resistance . 14
7.3 Voltage test . 14
7.4 Insulation resistance . 14
7.5 Dielectric strength. 14
7.6 Spark test . 15
7.7 DC stability . 15
7.8 Surface resistance. 15
7.9 Ageing test . 16
7.10 Hot set test . 16
7.11 Compatibility . 16
7.12 Water absorption test on sheath . 17
7.13 Ozone resistance . 17
7.14 Mineral oil resistance . 17
7.15 Fuel resistance . 18
7.16 Acid and alkali resistance . 18
7.17 Bending test at low temperature ( cores and cables with OD ≤ 12,5 mm). 19
7.18 Cold elongation test (cables with OD > 12,5 mm) . 19
7.19 Impact test at low temperature . 19
7.20 Reaction to fire - Cables . 19
7.21 Reaction to fire - Components . 19
Annex A (normative) Code designation . 23
Bibliography . 23
Tables
Table 1 - General data - Cable type 0,6/1 kV unsheathed . 10
Table 2 - General data - Cable type 1,8/3 kV unsheathed . 11
Table 3 - General data - Cable type 1,8/3 kV sheathed . 12
Table 4 - General data - Cable type 3,6/6 kV sheathed . 13
Table 5 - Schedule of tests for cables . 19

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Introduction
The EN 50264 series covers cables, based upon halogen free materials, for use in railway 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 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.
Information regarding selection and installation of cables, including current ratings can be found in EN 50355
(Guide to use) and EN 50343 (Rules for installation of cabling). 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.
The cables in Part 3-1 may also be used in EN 50264-3-2 to build up multicore sheathed cables.
Part 1, "General requirements", contains a more extensive introduction to EN 50264, and should be read in
conjunction with this Part 3-1.

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1 Scope
EN 50264-3-1 specifies requirements for, and constructions and dimensions of, single core cables of the
following types and voltage ratings:
2 2
• 0,6/1 kV unscreened, unsheathed (1 mm to 400 mm );
2 2
• 1,8/3 kV unscreened, unsheathed (1,5 mm to 400 mm );
2 2
• 1,8/3 kV unscreened, sheathed (1,5 mm to 400 mm );
2 2
• 3,6/6 kV unscreened, sheathed (2,5 mm to 400 mm ).
All cables have class 5 tinned copper 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 temperature 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 50264-3-1 should be read 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 (including 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 cables 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 –
Small cables – Category D
EN 50305:2002 Railway applications – Railway rolling stock cables having special fire
performance – Test methods
EN 60228 Conductors of insulated cables (IEC 60228)
EN 60332-1-2 Tests on electric and 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)

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EN 60811-1-1:1995 Insulating and sheathing materials of electric and optical cables – 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 – Thermal 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 60811-1-4:1995 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
methods – 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 in 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 single-core insulated cables shall be as follows:
a) unsheathed: 0,6/1 kV; 1,8/3 kV;
b) sheathed: 1,8/3 kV; 3,6/6 kV.
5 Marking and identification
5.1 Marking of cable
Cables shall be marked with the following:
• manufacturer's name;
• EN reference;
• voltage rating (U );
0
• conductor size;
• a code designation according to Annex A.

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An example of a complete mark is:
 XYZ EN 50264-3-1  1800 V 400  FF
The marking shall conform to the requirements of EN 50264-1, Clause 5.
5.2 Core identification
The core insulation of all cables shall be black unless otherwise specified. If a colour other than black is
specified it shall be a colour in accordance with HD 308. The colour shall be throughout the whole of the
insulation or on its surface.
The colour shall be clearly identifiable and durable. Durability shall be checked by the test given in
EN 50305, 10.1.
Conformity with these requirements shall be verified by visual examination.
5.3 Sheath
The sheath shall be black unless otherwise agreed between the manufacturer and purchaser.
6 Construction of cables
6.1 General
The cable shall conform to the applicable general requirements given in EN 50264-1 and to the specific
requirements of this part.
Conformity with the requirements shall be checked by inspection and by the tests given in Table 5.
The cable dimensions shall be as given in Tables 1 to 4 as appropriate to the cable type.
6.2 Conductor
Conductors shall be tin-coated annealed copper, class 5, according to EN 60228.
When tested in accordance with EN 10002-1 the minimum average elongation of 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, should be selected at
random.
6.3 Conductor screening
For cables in Table 4 conductor screening shall be as given in EN 50264-1, 6.1.6.
6.4 Separator
6.4.1 A separator may be used over the conductor if the cable construction does not include a conductor
screen.
6.4.2 A separator may be included between the insulation and the sheath.

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6.5 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 107  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 insulation and sheath 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 4.
6.6 Sheath
Sheath shall be an extruded material as defined in EN 50264-1 applied so as to meet the requirements of
compound type EM 101 to EM 104:
EM 101 low temperature resistant, oil resistant;
EM 102 extra low temperature resistant, oil resistant;
EM 103 low temperature resistant, extra oil and fuel resistant;
EM 104 extra lo
...