SIST EN 50382-1:2008

SLOVENSKI STANDARD
SIST EN 50382-1:2008
01-julij-2008
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Railway applications - High temperature power cables for railway rolling stock and having
special fire performance - Part 1: General requirements
Bahnanwendungen - Hochtemperaturkabel und -leitungen für Schienenfahrzeuge mit
verbessertem Verhalten im Brandfall - Teil 1: Allgemeine Anforderungen
Applications ferroviaires - Câbles pour matériel roulant ferroviaire ayant des
performances particulières de comportement au feu - Partie 1: Prescriptions générales
Ta slovenski standard je istoveten z: EN 50382-1:2008
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
29.060.20 Kabli Cables
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
SIST EN 50382-1:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 50382-1

NORME EUROPÉENNE
March 2008
EUROPÄISCHE NORM

ICS 13.220.40; 29.060.20; 45.060.01


English version


Railway applications -
Railway rolling stock high temperature power cables
having special fire performance -
Part 1: General requirements



Applications ferroviaires -  Bahnanwendungen -
Câbles pour matériel roulant ferroviaire Hochtemperaturkabel und -leitungen
ayant des performances particulières für Schienenfahrzeuge mit verbessertem
de comportement au feu - Verhalten im Brandfall -
Partie 1: Prescriptions générales Teil 1: Allgemeine Anforderungen





This European Standard was approved by CENELEC on 2008-02-01. 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 50382-1:2008 E

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EN 50382-1:2008 – 2 –
Foreword
This European Standard was prepared for the Technical Committee CENELEC 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 text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50382-1 on
2008-02-01.
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) 2009-02-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-02-01
––––––––––––

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– 3 – EN 50382-1:2008
Contents
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Definitions . 6
4 Rated voltage . 7
5 M arking . 8
5.1 Indication of origin . 8
5.2 Continuity of marks . 8
5.3 Durability . 8
5.4 Legibility . 9
5.5 Additional marking. 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 Tapes . 10
6.4 Sheath . 11
6.5 Overall diameter . 11
6.6 Non-metallic components . 11
7 Electrical performance . 12
8 Reaction to fire – Cables . 12
8.1 Flame propagation (flame spread) – Single vertical cable . 12
8.2 Flame propagation (flame spread) – Bunched cables . 12
8.3 Smoke emi s s i on . 12
9 Reaction to fire – Components . 12
9.1 Assessment of halogens . 12
9.2 Toxicity . 12
Annex A (normative) Requirements for halogens . 19
Annex B (normative) Determination of halogens – Elemental test . 21
Annex C (normative) Thickness and overall diameter – Selection of samples and
calculation of results . 23
Annex D (informative) Guidance on selection of cables for type approval . 24
Bibliography . 25
Figures
Figure 1 – Example of marking . 8
Tables
Table 1 – Rated voltages . 8
Table 2 – Requirements for the tests for halogen free insulating compounds for Part 2 . 13
Table 3 – Requirements for the tests for halogen free sheathing compounds for Part 2 . 16
Table A.1 – Type test . 19
Table A.2 – Sample test . 19
Table D.1 – Selection of cables for type approval . 24

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EN 50382-1:2008 – 4 –
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.
EN 50382 specifies cables for power 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 cables, for use in railway rolling stock, and
having standard wall thickness of insulation, based on materials that allow them to operate at high
temperature and which are also halogen free. In the event of a fire affecting cables to EN 50382 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 50382, which covers a range of cables rated at up to 3,6/6 kV with conductor sizes 1,5 mm² up to
400 mm², is divided into 2 parts:
– Part 1: General requirements;
– Part 2: Single core silicone rubber insulated cables for 120 °C or 150 °C.
These cables are intended for a limited number of applications.
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, are described in EN 50343.
NOTE Current ratings for inclusion in EN 50355 are under development for the next amendment.
Special test methods referred to in EN 50382 are given in EN 50305.

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– 5 – EN 50382-1:2008
1 Scope
This Part 1 of EN 50382 specifies the general requirements applicable to the cables given in EN 50382-2. It
includes the detailed requirements for the insulating and sheathing materials and other components called up
in EN 50382-2. In particular EN 50382-1 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 either 120 °C
or 150 °C.
NOTE  This rating is based upon the polymer defined in 3.1. Before this polymer 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. 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 based
on a failure mode appropriate to the type of material or cable.
The maximum temperature for short circuit conditions for silicone rubber is 350 °C based on a duration of 5 s.
Although both of the insulating and one of the sheathing compounds specified in this standard are thermally
capable of operating at 150 °C, where tinned conductors are used the maximum operating temperature is
limited to 120 °C and for the same technical reason the maximum short circuit temperature, for tinned copper
conductors, is limited to 250 °C. The choice of sheath may also limit the operating temperature to 120 °C.
This Part 1 should be used in conjunction with EN 50382-2.
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 – Part 1: Method of test (at ambient
temperature)
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 50267-2-1 Common test methods for cables under fire conditions – Tests on gases
evolved during combustion of materials from cables – Part 2–1: Procedures –
Determination of the amount of halogen acid gas
EN 50267-2-2 Common test methods for cables under fire conditions – Tests on gases
evolved during combustion of materials from cables – Part 2–2: Procedures –
Determination of degree of acidity of gases for materials by measuring pH
and conductivity
EN 50305:2002 Railway applications – Railway rolling stock cables having special fire
performance – Test methods
EN 50382-2 Railway applications – Railway rolling stock high temperature power cables
having special fire performance – Part 2: Single core silicone rubber insulated
cables for 120 °C or 150 °C

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EN 50382-1:2008 – 6 –
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)
EN 60684-2 Flexible insulating sleeving – Part 2: Methods of test (IEC 60684-2)
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)
3 Definitions
For the purposes of all parts of EN 50382, the following terms and definitions apply. The types or combination
of insulating and sheathing compounds covered in this EN are listed below.
3.1
cross-linked silicone rubber (SiR)
compound based on a poly-siloxane polymer which, when cross-linked, meets with the requirements given in
the particular specification
3.2
cross-linked ethylene copolymers
compound in which the characteristic constituent is a copolymer of ethylene such as EVA or other, which,
when cross-linked, complies with the requirements given in the particular specifications
3.3
type of compound
category, designated by one or several characteristics, in which a compound is placed according to its
properties, as determined by specific tests
NOTE The type designation is not directly related to the composition of the compound. See also 6.2.1 and 6.4.1.
3.4
halogen-free material
combustible material which complies with the requirements of Annexes A and B

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– 7 – EN 50382-1:2008
3.5
variation
difference between the median value after treatment and the median value without treatment, expressed as a
percentage of the latter
3.6
type tests (symbol T)
tests required to be made before supplying a type of cable covered by this standard on a general commercial
basis in order to demonstrate satisfactory performance characteristics to meet the intended application
NOTE  These tests are of such a nature that, after they have been made, they need not be repeated unless changes are made in the
cable materials, design or type of manufacturing process which might change the performance characteristics.
3.7
sample tests (symbol S)
tests made on samples of completed cable, or components taken from a completed cable adequate to verify
that the finished product meets the design specification
3.8
routine tests (symbol R)
tests made on all complete cable lengths to demonstrate their integrity
4 Rated voltage
The rated voltage of a cable is the reference voltage for which the cable is designed, and which serves to
define the electrical tests.
The rated voltage V is expressed by the combination of the following values (in volts):
U /U (U )
o m
where
U is the r.m.s. value between any insulated conductor and earth, i.e. metal covering of the cable or the
0
surrounding medium, e.g. U = 1 800 V;
0
U is the r.m.s. value between any two phase-conductors of a multicore cable or of a system of single-
core cables, e.g. U = 3 000 V;
U is the maximum r.m.s. value of the "highest system voltage" for which the equipment may be used,
m
e.g. U = 3 600 V.
m
In an alternating current system, the rated voltage of a cable shall be at least equal to the nominal voltage of
the system for which it is intended.
In a direct current system, the cables shall have a maximum voltage against earth (V ) not exceeding
0
1,5 times the rated voltage (U ) of the cable, where
0
V is the d.c. value between any insulated conductor and earth, i.e. metal covering of the cable or the
0
surrounding medium, e.g. V = 2 700 V.
0
The rated voltage recognized for the purposes of all parts of EN 50382 shall be as given in Table 1.
NOTE In the railway industry it is common practice to identify cables and systems by the value of U , not the more usual practice of U.
o

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EN 50382-1:2008 – 8 –
Table 1 – Rated voltages
Rated voltage
V
U U U V
o m o
1 800 3 000 3 600 2 700
3 600 6 000 7 200 5 400
NOTE See Guide to use (EN 50355) for further information.

5 Marking
5.1 Indication of origin
Cables shall be provided with an identification of origin consisting of the continuous marking of the
manufacturer’s name, trademark, or registered identification number, by one of 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 the cable.
NOTE Additional markings may be specified in EN 50382-2.
5.2 Continuity of marks
Each specified mark shall be regarded as continuous if the distance between the end of the mark and the
beginning of the next identical mark does not exceed
a) 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.
NOTE 1 A "specified mark" is any mandatory mark covered by this Part of EN 50382 or by the particular requirements of Part 2.
NOTE 2 An example of marking on the outer surface of the cable is given in Figure 1.

Figure 1 – Example of marking
Compliance shall be checked by visual examination and measurement.
5.3 Durability
Printed markings shall be durable.
Compliance shall be checked by the test given in EN 50305, 10.1.

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– 9 – EN 50382-1:2008
5.4 Legibility
All markings shall be legible.
Printed markings shall be in contrasting colours.
5.5 Additional marking
Additional marking, specific to the individual cable type, shall be given in EN 50382-2.
5.6 Use of the name CENELEC
The name CENELEC, in full or abbreviated, shall not be directly marked on, or in, the cables.
6 General requirements for the construction of cables
6.1 Conductors
6.1.1 Material
The conductors shall be tin coated or plain annealed copper.
When tested in accordance with EN 10002-1 the minimum average elongation of wires from the conductors
shall be 15 %, with a minimum value of 10 % for an individual wire.
6.1.2 Construction
Conductors shall be in accordance with EN 60228.
NOTE The classes of the conductors relevant to the various types of cables are given in EN 50382-2.
6.1.3 Check of construction
Conformity with the requirements of 6.1.1 and 6.1.2 shall be checked by inspection and by measurement.
6.1.4 Electrical resistance
The resistance of each conductor at 20 °C shall be in accordance with the requirements of EN 60228 for the
given class of conductor.
Compliance shall be checked by the test given in EN 50305, 6.1.
6.1.5 Separator tape
It is permitted to place a non-hygroscopic separator tape of coloured material between the conductor and
insulation. If used, the separator tape shall be easily removable from the conductor.
6.1.6 Conductor screening
Where specified in EN 50382-2 the conductor screening shall consist of a semiconducting tape, a layer of
extruded semi-conducting compound, or a combination of both.
It shall be easily removable from the conductor.

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EN 50382-1:2008 – 10 –
6.2 Insulation system
6.2.1 Material
The insulation system shall be manufactured from materials as defined in 3.1 of this part. It shall conform to
the requirements given in Table 2 and as specified for each type of cable in EN 50382-2.
Insulation types available are
a) for unsheathed cables:
– Type EI 111: extra low temperature resistant, oil resistant;
b) for sheathed cables:
– Type EI 111: extra low temperature resistant, oil resistant;
– Type EI 112: extra low temperature resistant.
NOTE Compound Type EI 112 is not oil resistant.
6.2.2 Application
The insulation system shall be applied by extrusion and may consist of one or more closely adherent layers.
The insulation system shall form a compact and homogeneous body and shall be so applied that it fits closely
on the conductor, the separator tape or conductor screening and it shall be possible to remove the insulation
without to damage the conductor.
The insulation system shall be smooth, uniformly applied and be substantially circular.
Conformity shall be checked by inspection and by manual testing.
6.2.3 Thickness
The mean value of the thickness of insulation shall not be less than the specified value for each type and size
of cable as specified in EN 50382–2.
It is permissible for the thickness at any one place to be less than the specified value provided that the
difference does not exceed 0,1 mm + 10 % of the specified value.
Conformity shall be checked by the procedure given in Annex C.
6.3 Tapes
6.3.1 General
It is permitted to apply tapes as a separator over the insulation.
In such cases the requirements in 6.3.2 shall apply.
6.3.2 Material
Tapes, if any, shall be composed of non-hygroscopic and halogen free material, having no harmful
interactions with the constituents of the cable, be suitable for the operating temperature and be compatible
with the cable components with which they are in contact.
Conformity with this requirement shall be checked by the tests given in EN 50382-2.
Tapes, if any, shall be halogen free.
Conformity shall be checked by the tests specified in 9.1.

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– 11 – EN 50382-1:2008
6.4 Sheath
6.4.1 Material
The sheath shall be a material as defined in 3.1 or 3.2. It shall conform to the requirements given in Table 3
and as specified for each type of cable in EN 50382-2.
Sheath types available are
a) for cable rated at 120 °C:
- Type EM 105: low temperature resistant, oil resistant;
- Type EM 106: extra low temperature resistant, oil resistant;
b) for cable rated at 150 °C:
- Type EM 107: extra low temperature resistant, oil resistant.
6.4.2 Application
The sheath shall be applied by extrusion in one or more closely adherent layers of the same type.
The sheath shall form a compact, homogeneous body and shall be so applied that it fits closely over the core
or separator tape. It shall be smooth on the outer surface, uniform without blisters, lumps or other defects and
shall not adhere to the core.
It shall be possible to remove the sheath without damage to the insulation.
NOTE A separator, consisting of a tape, may be placed beneath the sheath.
Conformity shall be checked by inspection and by manual testing.
6.4.3 Thickness
The mean value of the thickness of the sheath shall not be less than the specified value for each type and
size of cable as given in EN 50382-2.
It is permissible for the thickness at any one place to be less than the specified value provided that the
difference does not exceed 0,1 mm + 15 % of the specified value.
Conformity shall be checked by the test given in Annex C.
6.5 Overall diameter
The overall diameter of the cable shall be as detailed in the particular specification for each type and size of
cable shown in the relevant table.
The overall diameter shall be within the limits given for the particular cable.
Conformity shall be checked by the test given in Annex C.
6.6 Non-metallic components
All non-metallic components shall be halogen free.
Conformity shall be checked by the tests specified in 9.1 and 9.2.

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EN 50382-1:2008 – 12 –
7 Electrical performance
The electrical performance of the completed cable shall be as given in EN 50382-2.
8 Reaction to fire – Cables
8.1 Flame propagation (flame spread) – Single vertical cable
The completed cable shall be tested in accordance with EN 60332-1-2, and shall conform to the
recommended performance requirements given in Annex A of that standard.
8.2 Flame propagation (flame spread) – Bunched cables
8.2.1 Cables with diameter more than or equal to 12 mm
The completed cable shall be tested in accordance with EN 50266-2-4, and shall conform to the
recommended performance requirements given in Annex B of that standard.
8.2.2 Cables with diameter greater than 6 mm and less than 12 mm
The completed cable shall be tested in accordance with EN 50266-2-5.
At the conclusion of the test the maximum extent of the charred portion measured on the sample shall not
have reached a height exceeding 2,5 m above the bottom edge of the burner, neither at the front nor the rear
of the ladder.
8.3 Smoke emission
The completed cable shall be tested in accordance with EN 61034-2. The percentage light transmission shall
not be less than 70 %
9 Reaction to fire – Components
9.1 Assessment of halogens
Samples of insulation, sheath and, where applicable, fillers and tapes shall be tested in accordance with
Annex A.
The maximum evolution of HCl, minimum pH, maximum conductivity and maximum fluorine content shall be
in accordance with the requirements given in Annex A as applicable.
9.2 Toxicity
All cable materials shall be tested in accordance with EN 50305, 9.2. The toxicity index shall not exceed 3.
If the toxicity index of any of the non extruded elements is higher than 3 and the combined mass of these
elements (fillers, tapes and binders) does not exceed 5 % of the total weight of combustible materials in the
cable, then the whole cable shall not exceed the weighted toxicity (ITC´) of 3.
The weighted toxicity index is defined as:

ITC ×w
∑ i i
i
ITC'=
w
∑
i
i
where
ITC :  ITC of each extruded or non extruded non metallic material
...