SIST EN 50119:2009

SLOVENSKI STANDARD
01-december-2009
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SIST EN 50119:2002
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Railway applications - Fixed installations - Electric traction overhead contact lines
Bahnanwendungen - Ortsfeste Anlagen - Oberleitungen für den elektrischen Zugbetrieb
Applications ferroviaires - Installations fixes - Lignes aériennes de contact pour la traction
électrique
Ta slovenski standard je istoveten z: EN 50119:2009
ICS:
29.280 (OHNWULþQDYOHþQDRSUHPD Electric traction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50119
NORME EUROPÉENNE
September 2009
EUROPÄISCHE NORM
ICS 29.280 Supersedes EN 50119:2001

English version
Railway applications -
Fixed installations -
Electric traction overhead contact lines

Applications ferroviaires -  Bahnanwendungen -
Installations fixes - Ortsfeste Anlagen -
Lignes aériennes de contact Oberleitungen
pour la traction électrique für den elektrischen Zugbetrieb

This European Standard was approved by CENELEC on 2009-04-01. 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: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50119:2009 E
Foreword
This European Standard was prepared by SC 9XC, Electric supply and earthing systems for public transport
equipment and ancillary apparatus (Fixed installations), of 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 50119 on
2009-04-01.
This European Standard supersedes EN 50119:2001.
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) 2010-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) –
References to definitions in IEC 60050-811 in Clause 3 are included for user reference and in some cases
may update or modify the current definition.
National Standards implementing EN 50119:
The National Standards implementing EN 50119 will comprise the full text of the Eurocode (including any
annexes), as published by CENELEC, which may be preceded by a national title page and national foreword,
and may be followed by a National Annex.
A National Annex, if included, may contain information on those parameters or statements in EN 50119 which
are not normative, e.g.
 values where alternative values or informative values only are given in the standard,
 country specific data (e.g. geographical, climatic, etc.), e.g. ice loads or temperature limits,
 the procedure to be used where alternative procedures are given in the standard.
It may also contain
 decisions on the use of informative annexes, and
 references to non-contradictory complementary information to assist the user to apply the standard.
The National Annex shall not alter any provisions of the European Standard.
__________
– 3 – EN 50119:2009
Contents
Page
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, symbols and abbreviated terms . 9
3.1 Systems . 9
3.2 Conductors. 10
3.3 Electrical . 11
3.4 Geometrical . 11
3.5 Foundations . 12
3.6 Symbols and abbreviated terms . 13
4 Fundamental design data . 15
4.1 General . 15
4.2 Line characteristics . 15
4.3 Electrical power system design . 15
4.4 Vehicle characteristics . 16
4.5 Current collectors . 16
4.6 Environmental conditions . 16
4.7 Design life . 16
5 System requirements . 16
5.1 Design of electrical system . 16
5.2 Design of current collection systems . 19
5.3 Mechanical design of contact wire loads . 22
5.4 Mechanical design of catenary wire loads . 23
5.5 Mechanical design of other stranded conductor loads . 25
5.6 Mechanical design of solid wire loads . 25
5.7 Mechanical design of ropes of non-conducting materials . 25
5.8 Suspension systems . 26
5.9 Tensioning systems . 26
5.10 Geometry of overhead equipment . 26
5.11 Contact line arrangement above turnouts and crossings . 29
5.12 Overlap arrangements . 30
5.13 Specific requirements for overhead contact lines for trolleybus systems . 30
5.14 Tolerances and limits . 32
6 Structures . 33
6.1 Basis of design. 33
6.2 Actions on overhead contact lines . 36
6.3 Types of structures and related load cases . 43
6.4 Design of cross-span supports and structures . 47
6.5 Foundations . 50
7 Component requirements . 58
7.1 General . 58
7.2 Supporting assemblies . 58
7.3 Contact wire . 58
7.4 Other conductors and ropes . 58
7.5 Tensioning devices . 59
7.6 Mechanical midpoints . 59
7.7 Droppers . 60
7.8 Clamps and line fittings . 60
7.9 Electrical connections . 61
7.10 Insulators . 61
7.11 Sectioning devices . 61
7.12 Disconnectors and drives . 62
7.13 Protection devices . 62
7.14 Specific components for trolleybus systems . 62

8 Testing . 63
8.1 General . 63
8.2 Support assemblies . 63
8.3 Contact wires . 73
8.4 Other conductors . 73
8.5 Tensioning devices . 74
8.6 Mechanical midpoints . 75
8.7 Droppers . 76
8.8 Clamps, splices and other fittings . 78
8.9 Electrical connections . 78
8.10 Insulators . 79
8.11 Sectioning devices . 79
8.12 Disconnectors and drives . 81
8.13 Surge protection devices . 81
8.14 Specific components for trolleybus systems . 81
8.15 System test . 81
9 Minimum documentation . 82
9.1 General . 82
9.2 System specification . 83
9.3 Basic design . 83
9.4 Installation design . 83
9.5 Installation and maintenance . 83
Annex A (informative) Current carrying capacity of conductors . 84
Annex B (informative) Structural details . 85
Annex C (informative) Information on geotechnical soil investigation and soil characteristics . 86
Bibliography . 88

Figures
Figure 1 — Relationship between contact wire heights and pantograph operating position . 29
Figure 2 — Position of return wire in relation to right-of-way . 31
Figure 3 — Wind action on lattice steel structures . 40
Figure 4 — Definition of drag factors for double channel structure . 41
Figure 5 — Description of dimensions and minimum conductor lengths . 70
Figure 6 — Potential measuring points at a connecting clamp and a butt joining clamp . 71
Figure 7 — Potential measuring points at a T-type infeed terminal . 71
Figure 8 — Example of a tensioning device measurement test . 75
Figure 9 — Example of a dropper test cycle . 77
Figure 10 — Example of a dropper tension test assembly . 78
Figure 11 — Example of a test cycle for an electrical connection . 79

– 5 – EN 50119:2009
Tables
Table 1 — Temperature limits for material mechanical properties . 17
Table 2 — Electrical clearances . 18
Table 3 — Clearance between differing phases . 19
Table 4 — Contact force . 21
Table 5 — Factor K for contact wires . 22
temp
Table 6 — Factor K for contact wires . 23
icewind
Table 7 — Factor K for stranded conductors . 24
temp
Table 8 — Factor K for stranded conductors . 24
wind
Table 9 — Factor K for stranded conductors . 24
ice
Table 10 — Factor K for ropes of non-conducting materials . 26
radius
Table 11 — Contact wire gradients . 27
Table 12 — Important parameters to assist in the definition of tolerances and limits . 33
Table 13 — Recommended values for factor C for different structure types . 41
str
Table 14 — Summary of load cases to be considered for each type of structures . 46
Table 15 — Summary of partial factors for actions . 47
Table 16 — Recommended values for partial factors γ for steel material . 48
M
Table 17 — Recommended values for partial factors γ for concrete structures . 48
M
Table 18 — Recommended values for partial factors γ for foundations . 54
M
Table 19 —Values for shear and compressive stress in case of anchoring of steel members in concrete . 56
Table 20 — Tightening torques M for regularly used bolts . 65
t
Table 21 — Examples of bolt connections . 65
Table 22 — Assignment of the strength of bolt and nut . 66
Table 23 — Conversion factor for tightening torques . 66
Table 24 — Minimum conductor lengths . 70
Table A.1 — Continuous current-carrying capacity of conductors and contact wires . 84
Table B.1 — Recommended dimensions of connections and edge distances of jointing components . 85
Table C.1 — Geotechnical characteristic parameters of some standard soils according
to EN 50341-1:2001, Annex N . 87

1 Scope
This European Standard applies to electric traction overhead contact line systems in heavy railways, light
railways, trolley busses and industrial railways of public and private operators.
It applies to new installations of overhead contact line systems and for the complete reconstruction of existing
overhead contact line systems.
This standard contains the requirements and tests for the design of overhead contact lines, requirements for
structures and their structural calculations and verifications as well as the requirements and tests for the
design of assemblies and individual parts.
This standard does not provide requirements for conductor rail systems where the conductor rails are located
adjacent to the running rails.
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 206-1, Concrete – Part 1: Specification, performance, production and conformity
EN 485-1, Aluminium and aluminium alloys – Sheet, strip and plate – Part 1: Technical conditions for
inspection and delivery
EN 755-1, Aluminium and aluminium alloys- Extruded rod/bar, tube and profiles – Part 1: Technical conditions
for inspection and delivery
EN 755-2, Aluminium and aluminium alloys – Extruded rod/bar, tube and profiles – Part 2: Mechanical
properties
EN 1536, Execution of special geotechnical work – Bored piles
EN 1537, Execution of special geotechnical work – Ground anchors
EN 1991-1-4:2005, Eurocode 1: Actions on structures – Part 1-4: General actions – Wind actions
ENV 1991-2-4:1995, Eurocode 1: Basis of design and actions on structures – Part 2-4: Actions on
structures – Wind actions
EN 1992 (all parts), Eurocode 2 – Design of concrete structures
EN 1993 (all parts), Eurocode 3: Design of steel structures
EN 1993-1-1:2005, Eurocode 3: Design of steel structures – Part 1-1: General rules and rules for buildings
EN 1995 (all parts), Eurocode 5: Design of timber structures
EN 1997-1:2004, Eurocode 7: Geotechnical design – Part 1: General rules
EN 1997-2:2007, Eurocode 7: Geotechnical design – Part 2: Ground investigation and testing
EN 1998 (all parts), Eurocode 8: Design of structures for earthquake resistance
EN 1999 (all parts), Eurocode 9: Design of aluminium structures
EN 10025 (all parts), Hot rolled products of structural steels

– 7 – EN 50119:2009
EN 10149 (all parts), Hot-rolled flat products made of high yield strength steels for cold forming
EN 10164, Steel products with improved deformation properties perpendicular to the surface of the product –
Technical delivery conditions
EN 10210 (all parts), Hot finished structural hollow sections of non-alloy and fine grain steels
EN 12510, Wood poles for overhead lines – Strength grading criteria
EN 12699, Execution of special geotechnical work – Displacement piles
EN 12843, Precast concrete products – Masts and poles
EN 20898-2, Mechanical properties of fasteners – Part 2: Nuts with specified proof load values – Coarse
thread (ISO 898-2)
EN 50121-2, Railway applications – Electromagnetic compatibility – Part 2: Emission of the whole railway
system to the outside world
1)
EN 50122 (all parts) , Railway applications – Fixed installations – Electrical safety, earthing and bonding
EN 50123 (all parts), Railway applications – Fixed installations – D.C. switchgear
EN 50124 (all parts), Railway applications – Insulation coordination
EN 50125-2, Railway applications – Environmental conditions for equipment – Part 2: Fixed electrical
installations
EN 50149, Railway applications – Fixed installations – Electric traction – Copper and copper alloy grooved
contact wires
EN 50151, Railway applications – Fixed installations – Electric traction – Special requirements for composite
insulators
EN 50152-2, Railway applications – Fixed installations – Particular requirements for a.c. switchgear – Part 2:
Single-phase disconnectors, earthing switches and switches with U above 1 kV
n
EN 50163, Railway applications – Supply voltages of traction systems
EN 50182, Conductors for overhead lines – Round wire concentric lay stranded conductors
EN 50183, Conductors for overhead lines – Aluminium-magnesium-silicon alloy wires
EN 50189, Conductors for overhead lines – Zinc coated steel wires
EN 50206-1:1998, Railway applications – Rolling stock – Pantographs: Characteristics and tests – Part 1:
Pantographs for main line vehicles
EN 50206-2:1999, Railway applications – Rolling stock – Pantographs: Characteristics and tests – Part 2:
Pantographs for metros and light rail vehicles
EN 50317, Railway applications – Current collection systems – Requirements for and validation of
measurements of the dynamic interaction between pantograph and overhead contact line
EN 50318, Railway applications – Current collection systems – Validation of simulation of the dynamic
interaction between pantograph and overhead contact line

1)
At draft stage.
EN 50326, Conductors for overhead lines – Characteristics of greases
EN 50341-1:2001, Overhead electrical lines exceeding AC 45 kV – Part 1: General requirements – Common
specifications
EN 50345, Railway applications – Fixed installations – Electric traction – Insulating synthetic rope assemblies
for support of overhead contact lines
EN 50367:2006, Railway applications – Current collection systems – Technical criteria for the interaction
between pantograph and overhead line (to achieve free access)
EN 60071 (all parts), Insulation co-ordination (IEC 60071, all parts)
EN 60099 (all parts), Surge arresters (IEC 60099, all parts, mod.)
EN 60168, Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal
voltages greater than 1 kV (IEC 60168)
EN 60265-1, High-voltage switches – Part 1: Switches for rated voltages above 1 kV and less than 52 kV
(IEC 60265-1)
EN 60305, Insulators for overhead lines with a nominal voltage above 1 kV – Ceramic or glass insulator units
for a.c. systems – Characteristics of insulator units of the cap and pin type (IEC 60305)
EN 60383 (all parts), Insulators for overhead lines with a nominal voltage above 1 kV (IEC 60383, all parts)
EN 60433, Insulators for overhead lines with a nominal voltage above 1 kV – Ceramic insulators for a.c.
systems – Characteristics of insulator units of the long rod type (IEC 60433)
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60660, Insulators – Tests on indoor post insulators of organic material for systems with nominal voltages
greater than 1 kV up to but not including 300 kV (IEC 60660)
EN 60672 (all parts), Ceramic and glass insulating materials (IEC 60672, all parts)
EN 60889, Hard-drawn aluminium wire for overhead line conductors (IEC 60889)
EN 60947-1, Low-voltage switchgear and controlgear – Part 1: General rules (IEC 60947-1)
EN 61109, Insulators for overhead lines - Composite suspension and tension insulators for a.c. systems with
a nominal voltage > 1 000 V - Definitions, test methods and acceptance criteria (IEC 61109)
EN 61232, Aluminium-clad steel wires for electrical purposes (IEC 61232, mod.)
EN 61284:1997, Overhead lines – Requirements and tests for fittings (IEC 61284:1997)
EN 61325, Insulators for overhead lines with a nominal voltage above 1 kV – Ceramic or glass insulator units
for d.c. systems – Definitions, test methods and acceptance criteria (IEC 61325)
EN 61773, Overhead lines – Testing of foundations for structures (IEC 61773)
EN 61952, Insulators for overhead lines - Composite line post insulators for A.C. systems with a nominal
voltage > 1 000 V - Definitions, test methods and acceptance criteria (IEC 61952)
EN 62271-102:2002, High-voltage switchgear and controlgear – Part 102: Alternating current disconnectors
and earthing switches (IEC 62271-102:2001 + corrigendum April 2002 + corrigendum May 2003)
EN ISO 898-1:1999, Mechanical properties of fasteners made of carbon steel and alloy steel – Part 1: Bolts,
screws and studs (ISO 898-1:1999)

– 9 – EN 50119:2009
EN ISO 1461:1999, Hot dip galvanized coatings on fabricated iron and steel articles – Specifications and test
methods (ISO 1461:1999)
HD 578, Characteristics of indoor and outdoor post insulators for systems with nominal voltages greater than
1 kV (IEC 60273)
IEC 60050-811, International Electrotechnical Vocabulary (IEV) – Chapter 811: Electric traction
IEC/TR 61245, Artificial pollution tests on high-voltage insulators to be used on d.c. systems
3 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the terms and definitions given in IEC 60050-811 and the following apply.
3.1 Systems
3.1.1
contact line system
support network for supplying electrical energy from substations to electrically powered traction units, which
covers overhead contact line systems and conductor rail systems; the electrical limits of the system are the
feeding point and the contact point to the current collector
NOTE  The mechanical system may comprise
 the contact line,
 structures and foundations,
 supports and any components supporting or registering the conductors,
 head and cross spans,
 tensioning devices,
 along-track feeders, reinforcing feeders, and other lines like earth wires and return conductors as far as they are supported from
contact line system structures,
 any other equipment necessary for operating the contact line,
 conductors connected permanently to the contact line for supply of other electrical equipment such as lights, signal operation,
point control and point heating.
3.1.2
contact line
conductor system for supplying traction units with electrical energy via current-collection equipment
NOTE  This includes all current-collecting conductors and conducting rails or bars, including the following:
 reinforcing feeders;
 cross-track feeders;
 disconnectors;
 section insulators;
 over-voltage protection devices;
 supports that are not insulated from the conductors;
 insulators connected to live parts;
but excluding other conductors, such as the following:
 along-track feeders;
 earth wires and return conductors.

3.1.3
overhead contact line system
contact line system using an overhead contact line to supply current for use by traction units
3.1.4
overhead contact line
contact line placed above or beside the upper limit of the vehicle gauge, supplying traction units with electrical
energy via roof-mounted current collection equipment
3.1.5
conductor rail system
contact line system using a conductor rail for current collection
3.1.6
overhead conductor rail
rigid overhead contact line, of simple or composite section, mounted above or beside the upper limit of the
vehicle gauge, supplying traction units with electrical energy via roof-mounted current collection equipment
3.1.7
conductor rail
contact line made of a rigid metallic section or rail, mounted on insulators located near the running rails
3.1.8
supporting assembly
assembly of components attached to the main support structure that supports and registers the overhead
contact line
3.1.9
static load gauge
maximum cross-sectional profile of the vehicles using the railway line
3.1.10
kinematic load gauge
static load gauge enlarged to allow for dynamic movements of the vehicle, e.g. suspension travel and bounce
3.1.11
kinematic envelope
kinematic load gauge further enlarged to allow for possible tolerances in the position of the track
3.1.12
swept envelope
kinematic envelope enlarged to allow for centre and end throw of the vehicles on horizontal and vertical
curves
3.1.13
tensioning device
device to maintain the tension of conductors within the system design parameters
3.1.14
urban mass transportation system
light rail, trolleybus and tramway system, operating in urban areas, excluding heavy rail systems
3.2 Conductors
3.2.1
along-track feeder
overhead conductor mounted on the same structure as the overhead contact line to supply successive
feeding points
– 11 – EN 50119:2009
3.2.2
reinforcing feeder
overhead conductor mounted adjacent to the overhead contact line, and directly connected to it at frequent
intervals, in order to increase the effective cross sectional area of the overhead contact line
3.3 Electrical
3.3.1
nominal voltage
voltage by which an installation or part of an installation is designated
NOTE  The voltage of the contact line may differ from the nominal voltage by a quantity within permitted tolerances given in EN 50163.
3.3.2
feeding section
electrical section of the route fed by individual track feeder circuit breakers within the area supplied by the
substation
3.3.3
fault current
maximum current passed through the overhead contact line system under fault conditions between live
equipment and earth, within a short defined time period
3.3.4
short-circuit
accidental or intentional conductive path between two or more points in a circuit forcing the voltages between
these points to be relatively low. Any such conductive path whether between conductors or between
conductor and earth is regarded as a short-circuit
3.3.5
short-circuit current
electric current flowing through the short-circuit
3.3.6
continuous current rating
permanent rated current carrying capacity of the overhead contact line within the system operating
parameters
3.3.7
feeding point
point at which the feeding system is connected to the contact line
3.3.8
isolation
disconnection of a section of overhead contact line from the source of electrical energy, either in an
emergency or to facilitate maintenance
3.4 Geometrical
3.4.1
tension length
length of overhead contact line between two terminating points
3.4.2
gradient
ratio of the difference in height of the overhead contact line above top of rail (or road surface for overhead
contact line system for trolleybus applications) at two successive supports to the length of the span

3.4.3
contact wire height
distance from the top of the rail (or road surface for overhead contact line system for trolleybus applications)
to the lower face of the contact wire, measured perpendicular to the track
3.4.4
minimum contact wire height
minimum value of the contact wire height in the span in order to avoid the arcing between one or more
contact wires and the vehicles in all conditions
3.4.5
minimum design contact wire height
theoretical contact wire height including tolerances, designed to ensure that the minimum contact wire height
is always achieved
3.4.6
nominal contact wire height
nominal value of the contact wire height at a support in the normal conditions
3.4.7
maximum contact wire height
maximum possible contact wire height which the pantograph is required to reach, in all conditions
3.4.8
maximum design contact wire height
theoretical contact wire height taking account of tolerances, movements etc, designed to ensure the
maximum contact wire height is not exceeded
3.4.9
contact wire uplift
vertical upward movement of the contact wire due to the force produced from the pantograph
3.5 Foundations
3.5.1
gravity foundation
shallow foundation installed by excavation and backfilling
3.5.2
pile foundation
foundation which is flexible enough to show both rotation and deformations in the pile element itself subjected
to horizontal loading or overturning moments. The cross section may be circular or non-circular and it is
installed by boring and/or ramming
3.5.3
sidebearing foundation
relatively short, rigid foundation installed by excavation or boring which is subjected to horizontal loading or
overturning moments. The cross section may be circular or rectangular

– 13 – EN 50119:2009
3.6 Symbols and abbreviated terms
A projected area of an insulator
ins
A characteristic value of accidental actions
K
A effective area of the elements of a lattice structure
lat
A projected area of a structure
str
AACSR Aluminium alloy conductor steel reinforced
ACSR Aluminium conductor steel reinforced
a.c. alternating current
C compression amplitude for dropper test
C drag factor of a conductor
C
C drag factor for insulators
ins
C drag factor for lattice structures
lat
C drag factor of a structure
str
d.c. direct current
E total design value of actions
d
EMI electromagnetic interference
EMC electromagnetic compatibility
F minimum breaking load of stranded conductors and ropes
Bmin
F design value of an action
d
F characteristic value of an action
K
F internal force for dropper test
L
F maximum or failure force for test specimens
max
F nominal force
nom
F . permissible operating force
perm.op
F permissible tensile loading of stranded conductors & ropes
w
G structural response factor for conductors
C
G structural resonance factor for insulator sets
ins
G characteristic value of permanent actions
K
G structural resonance factor for lattice structures
lat
G gust response factor
q
G structural resonance factor for a structure
str
G terrain factor
t
g characteristic ice loads
IK
M M design bending moments
dyy, dzz
N internal axial force of an element
dax
n safety factor for calculating the permissible loading in wires
OCS overhead contact line system
OCL overhead contact line
P externally applied heat
prim
Q conductor tensile forces depending on the temperatures and climate related loads
CK
Q characteristic ice load
IK
Q characteristic value of variable actions
K
Q construction and maintenance loads
PK
Q wind load
W
Q wind load on conductors
WC
Q wind load on lattice structures
Wt
Q wind load on structures
Wstr
q characteristic dynamic wind pressure
K
R axial resistance under tension or compression
dax
R , R design bending resistances
dyy dzz
R characteristic value of the foundation ultimate resistance
k
R 0,2 % yield point
p 0,2 min
u variation in elasticity (also named ‘degree of non-uniformity’)
V wave propagation velocity of the contact wire
c
V reference wind velocity
R
v wind speed
w
X design value of a material property
d
X characteristic value of a material property
K
α heat transmission coefficient
Φ angle of incidence of the critical wind direction
γ partial factor for accidental loads
A
γ partial factor for conductor tensile forces
C
γ partial factor for actions
F
γ partial factor for permanent actions
G
γ partial factor for ice loads
I
γ partial factor for a material property
M
γ partial factor for construction and maintenance loads
P
γ partial factor for wind loads
W
µ coefficient of friction for bolt connections
tot
ρ density of air
ρ unit weight force of ice
I
σ minimum failing tensile stress of the contact wire
min
σ maximum permissible working tensile stress of a contact wire
w
– 15 – EN 50119:2009
4 Fundamental design data
4.1 General
The function of an overhead contact line system is not only to transmit energy from fixed installations like
substations to the vehicle but also from vehicles back to substations and auxiliary consumers using
regenerative braking. In order to fulfil this function the principal features of the contact line system shall be
designed in accordance with the requirements set out in this clause. In particular the integration of the
overhead contact line design with the corresponding features of other interconnected systems, e.g. the power
supply system and the traction system, shall be considered.
The requirements for overhead contact lines shall also apply to masts that are erected in connection with the
overhead contact line system and used for feeder lines.
The current collection system is a combination of overhead contact line and pantograph equipment, and the
quality of the current collection system depends on the characteristics of both. Both sets of equipment shall
be designed to appropriately fulfil their tasks. The design shall take cognisance of the compatibility with the
other.
The data listed in 4.2 to 4.7 are normally specified by the purchaser.
4.2 Line characteristics
The train service characteristics and operational requirements to be considered in the design shall include
 the speed and performance capability of the train/traction units to be employed,
 the future performance capability to be anticipated and allowed for in the design, including any
allowances for over speeding,
 the type and frequency of electrically hauled trains,
 the line speed for main and station tracks,
 track gradient profile and location of the route; including turnouts and transitions,
 type of turnouts.
4.3 Electrical power system design
The overhead contact line system design shall be based upon the consideration of the electrical
characteristics of the power supply system design, including
 nominal voltage and frequency, in accordance with EN 50163,
 short-circuit current details,
 required current rating,
 required impedance for a.c. systems where stated,
 required resistance for d.c. systems where stated,
 proposed feeding system,
 proposed return system,
 earthing and stray current protection in accordance with EN 50122-1 and EN 50122-2,
 requirements to mitigate EMI and facilitate EMC in accordance with EN 50121-2,
 requirements for over-voltage protection.
For urban mass transportation systems the short-circuit current details are not required.

4.4 Vehicle characteristics
The overhead contact line system design shall consider clearances for all vehicle types to be used on the
line. In particular the following shall be determined:
a) the static and kinematic load gauge, kinematic envelope and the swept envelope as well as any nat
...