SIST EN 50502:2016

SLOVENSKI STANDARD
SIST EN 50502:2016
01-februar-2016
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Railway applications - Rolling stock - Electric equipment in trolley buses - Safety
requirements and connection systems
Bahnanwendungen - Fahrzeuge - Elektrische Ausrüstung in O-Bussen –
Sicherheitsanforderungen und Verbindungssysteme
Applications ferroviaires - Matériel roulant - Equipement électrique des trolleybus -
Exigences de sécurité et systèmes de connexion
Ta slovenski standard je istoveten z: EN 50502:2015
ICS:
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
SIST EN 50502:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50502:2016

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SIST EN 50502:2016


EUROPEAN STANDARD EN 50502

NORME EUROPÉENNE

EUROPÄISCHE NORM
August 2015
ICS 45.060.01 Supersedes CLC/TS 50502:2008
English Version
Railway applications - Rolling stock - Electric equipment in trolley
buses - Safety requirements and current collection systems
Applications ferroviaires - Matériel roulant - Equipement Bahnanwendungen - Fahrzeuge - Elektrische Ausrüstung in
électrique des trolleybus - Exigences de sécurité et O-Bussen - Sicherheitsanforderungen und
systèmes de connexion Verbindungssysteme
This European Standard was approved by CENELEC on 2015-03-30. 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.



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
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50502:2015 E

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EN 50502:2015 (E)


Contents
European foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .7
4 Voltages and classification of the voltage bands . 10
4.1 Voltages . 10
4.2 Classification of the voltage bands . 11
5 Trolley bus construction . 12
5.1 Protection and electrical safety criteria . 12
5.2 Electrical components in band III voltage (high voltage) . 16
5.3 Electric traction equipment . 17
5.4 Power supply independent from OCL . 18
5.5 Electrical components in band II voltage (medium voltage) . 19
5.6 Electrical components in band I voltage (low voltage) . 19
6 Checks and tests . 20
6.1 General information. 20
6.2 New trolley-vehicles . 21
6.3 Overhauled trolley-vehicles . 28
6.4 On-duty trolley vehicles (periodical checks) . 28
6.5 Leakage Detectors (overhaul, definitions, thresholds) . 29
Annex A (normative) Constructional detailed provisions . 39
A.1 General information. 39
A.2 Attachment of the current collection system and other components . 39
A.3 Insulations . 39
A.4 Ventilation . 39
A.5 Accessibility . 40
A.6 Location of the main circuit breaker . 40
A.7 Income and outlet points of cables . 40
A.8 Cabling . 40
A.9 Test terminal board . 40
A.10 Insulation leakage pre-alarm . 40
A.11 Equipment connected to different voltage band circuits . 40
A.12 Segregation of band III circuits . 40
A.13 Batteries and other energy storage devices . 41
A.14 Fuel cells . 41
A.15 Environmental conditions . 41
Annex B (normative) Trolley buses – Current collection system for overhead contact lines . 42
B.1 Scope . 42
B.2 General Characteristics . 42
B.3 Marking . 52
B.4 Checks and tests . 52
B.5 Inspections . 56
B.6 Electromagnetic compatibility . 56
Annex C (normative) Constructional requirements for current collection systems . 57
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C.1 General information. 57
C.2 Material of the trolley poles . 57
C.3 Current connections . 57
C.4 Joints . 57
C.5 Cable insulation . 57
C.6 Abnormal line height . 57
Bibliography . 59

Figures
Figure 1 — Insulation overview — Trolley buses . 13
Figure 2 — Test circuits . 23
Figure 3 — Megaohmmeter connection . 26
Figure 4 — Megaohmmeter connection . 27
Figure 5 — Leakage current monitoring . 31
Figure 6 — Insulation resistance monitoring . 32
Figure 7 — Touch voltage monitoring with sliding wires . 33
Figure 8 — Touch voltage monitoring with grounded overhead contact line . 33
Figure 9 — Compensation of the voltage drop on the grounded overhead contact line . 34
Figure 10 — Voltage development with a load connected to the overhead contact line . 34
Figure 11 — Function check of the leakage current monitoring. 36
Figure 12 — Function check of the insulation resistance monitor. 37
Figure 13 — Function check of the touch voltage monitor with test against the positive of
overhead line or external voltage source . 38
Figure 14 — Function check of the touch voltage monitor with test against the positive of
overhead line or external voltage source . 38
Figure B.1 — General characteristics of a typical current collector . 42
Figure B.2 — Preferred excursion of trolley poles versus distances of contact lines to ground . 43
Figure B.3 — Example of fit of pole and the head . 45
Figure B.4 — Example of fit of mounting frame with the support base . 45
Figure B.5 – Typical trolley . 46
Figure B.6 — Typical slipper . 47
Figure B.7 — Devices (if any) for recovering and excursion limiting of pole ropes position,
overall dimensions and signalling . 50
Figure B.8 — Scheme of the verification of the detachment the current collector head . 56
Tables
Table 1 — Voltage bands for trolley buses . 11
Table 2 — Voltage bands for France . 11
Table 3 — Voltage bands for Italy (Decree D.P.R. 547: 1955, Law 191:1974) . 11
Table 4 — Voltage bands for electric plants on road vehicles . 12
Table 5 — Test voltages U based on rated insulation voltage U . 24
a Nm
Table 6 — Summary of electric tests . 29
Table B.1 — Summary of tests and checks . 53
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European foreword
This document (EN 50502:2015) has been prepared by CLC/SC 9XB "Electromechanical material on
board rolling stock" of the Technical Committee CENELEC TC 9X “Electrical and electronic
applications for railways”.

The following dates are fixed:

(dop) 2016-03-30
• latest date by which this document has to be
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2018-03-30
conflicting with this document have to
be withdrawn

This document supersedes CLC/TS 50502:2008.

EN 50502:2015 includes the following significant technical changes with respect to
CLC/TS 50502:2008:

- Clause 1: a more detailed scope (guided vehicles) in reference to other electric vehicles;
- 5.6.1: insulation resistance and separate source applied voltage tests for voltage band I
components is waived with respect to other electric vehicles and with reference to ECE R100;
- Table 5: test voltages for components intended to break a current which are used with open
contacts for supplementary or basic insulation;
- 6.4.2: specification of periodical checks additional to insulation resistance tests;
- 6.2.5, Table 6: electrical tests of the insulation of entrance areas are waived, visual inspection is
added;
- 6.5: extension of description and test of different leakage detectors;
- A.3: description of special requirements for external insulations;
- A.13, A.14: addition of energy storage systems and fuel cells;
- B.2.4.6: equipment for switch operation of overhead contact line.
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.
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1 Scope
This European Standard applies to electrical systems on board of vehicles of the type trolley bus, as
defined in 3.1, fed with a nominal line voltage (U ) between 600 V d.c. and 750 V d.c.
n
This European Standard defines the requirements and constructional hints, especially to avoid
electrical danger to the public and to staff. Where special requirements are existing for trolley buses,
hints are given for mechanical and functional safety as well as for protection against fire.
This European Standard covers vehicles intended for public transport of persons. This Standard
applies to:
- trolley buses,
- buses with current rail for guidance in the road surface,
- guided buses with bipolar roof current collector.
This European Standard does not apply to:
a) electric driven vehicles with only internal power supply:
1) hybrid vehicles,
2) diesel - electric vehicles,
3) fuel - cell vehicles,
4) battery vehicles,
b) vehicles with safe protective bonding:
1) rubber tyred commuter trains,
2) guided buses with supply by a separate current rail,
3) rail guided buses with unipolar roof current collector,
c) vehicles operated outside publicly accessible areas:
1) electric driven lorries on motorways.
Guidance and current rails are special solutions and at this time are not under standardization like
trolley bus current collectors and overhead contact lines (OCL).
It refers mainly to earthed networks, but reference is made also to galvanically insulated networks.
Annex A is related to detailed design features for trolley buses.
Annexes B and C are related to the current collection systems. The detailed scope of these annexes is
given in Annex B.
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 45502 (all parts), Active implantable medical devices
EN 45545-5, Railway applications — Fire protection on railway vehicles — Part 5: Fire safety
requirements for electrical equipment including that of trolley buses, track guided buses and magnetic
levitation vehicles
EN 50110 (all parts), Operation of electrical installations
EN 50110-1:2013, Operation of electrical installations — Part 1: General requirements
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EN 50119, Railway applications — Fixed installations — Electric traction overhead contact lines
EN 50121 (all parts), Railway applications — Electromagnetic compatibility
EN 50122-1, Railway applications — Fixed installations — Electrical safety, earthing and the return
circuit — Part 1: Protective provisions against electric shock
EN 50124-1, Railway applications — Insulation coordination — Part 1: Basic requirements —
Clearances and creepage distances for all electrical and electronic equipment
EN 50125-1, Railway applications — Environmental conditions for equipment — Part 1: Rolling stock
and on-board equipment
EN 50153, Railway applications — Rolling stock – Protective provisions relating to electrical hazards
EN 50155, Railway applications — Electronic equipment used on rolling stock
EN 50163, Railway applications — Supply voltages of traction systems (IEC 60850)
EN 50178, Electronic equipment for use in power installations
EN 50215:2009, Railway applications — Rolling stock — Testing of rolling stock on completion of
construction and before entry into service
EN 50264 (all parts), Railway applications — Railway rolling stock power and control cables having
special fire performance
EN 50272-3, Safety requirements for secondary batteries and battery installations — Part 3: Traction
batteries
EN 50306 (all parts), Railway applications — Railway rolling stock cables having special fire
performance — Thin wall
EN 50343, Railway applications — Rolling stock — Rules for installation of cabling
CLC/TS 50457 (all parts), Conductive charging for electric vehicles
EN 50500, Measurement procedures of magnetic field levels generated by electronic and electrical
apparatus in the railway environment with respect to human exposure
EN 60034 (all parts), Rotating electrical machines (IEC 60034, all parts)
EN 60077 (all parts), Railway applications — Electrical equipment for rolling stock (IEC 60077, all
parts)
EN 60146 (all parts), Semiconductor converters (IEC 60146, all parts)
EN 60322, Railway applications — Electrical equipment for rolling stock — Rules for power resistors of
open construction (IEC 60322)
EN 60349 (all parts), Electric traction — Rotating electrical machines for rail and road vehicles
(IEC 60349, all parts)
EN 60445, Basic and safety principles for man-machine interface, marking and identification —
Identification of equipment terminals, conductor terminations and conductors (IEC 60445)
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
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EN 60721-3-5, Classfication of environmental conditions — Part 3: Classification of groups of
environmental parameters and their severities — Section 5: Ground vehicle installations (IEC 60721-
3-5)
EN 61111, Live working — Electrical insulating matting (IEC 61111)
EN 61287-1, Railway applications — Power converters installed on board rolling stock — Part 1:
Characteristics and test methods (IEC 61287-1)
EN 61373, Railway applications — Rolling stock equipment — Shock and vibration tests (IEC 61373)
EN 61557-2, Electrical safety in low voltage distribution systems up to 1 000V a.c. and 1 500 V d.c. —
Equipment for testing, measuring or monitoring of protective measures — Part 2: Insulation resistance
(IEC 61557-2)
EN 61557-8, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. —
Equipment for testing, measuring or monitoring of protective measures — Part 8: Insulation monitoring
devices for IT systems (IEC 61557-8)
EN 61851 (all parts), Electric vehicle conductive charging system (IEC 61851, all parts)
EN 61881 (all parts), Railway applications — Rolling stock equipment — Capacitors for power
electronics (IEC 61881, all parts)
EN 62196-1, Plugs, socket-outlets, vehicle connectors and vehicle inlets — Conductive charging of
electric vehicles — Part 1: General requirements (IEC 62196-1)
IEC 60479 (all parts), Effects of current on human beings and livestock
ISO 6469-3, Electrically propelled road vehicles — Safety specifications — Part 3: Protection of
persons against electric shock
ISO 10099, Pneumatic fluid power — Cylinders — Final examination and acceptance criteria
ISO 16750-2, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 2: Electrical loads
ISO 16750-3, Road vehicles — Environental conditions and testing for electrical and electronic
equipment — Part 3: Mechanical loads
ISO 23273, Fuel cell road vehicles — Safety specifications — Protection against hydrogen hazards for
vehicles fuelled with compressed hydrogen
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
trolley bus
vehicles with rubber tyres (with limited lateral operating range or guided) without safe protective
bonding of the chassis, which operate with an electrical drive in the public area accessible for persons
and galvanically externally powered by a supply line (overhead contact line, current rail)
Note 1 to entry: The two poles of the supply line are either both galvanically insulated from earth or one insulated and the
other earthed. This can take place at a central point or at every feed (substation).
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3.2
current collection system
whole of the components, generally mounted on the vehicle roof, having the task of taking the current
from the overhead contact lines to supply the equipment of the vehicle, both in standing and in running
conditions
3.3
mass
conductive part of an electrical component which is accessible and which is not energized in normal
conditions, but may become energized in fault conditions
Note 1 to entry: The equipment defined in 5.6.1 as normal bus vehicle components are not included in this term.
Note 2 to entry: The conductive parts of the chassis and of the bodywork are defined as the vehicle mass.
3.4
intermediate mass
conductive part between two insulating parts of a double insulated equipment (protection, enclosure,
etc.), which shall not be accessible to the public
3.5
basic insulation
insulation for personal safety between the electric parts which are subject to be energized and the
intermediate mass, to provide basic protection against electric shock
3.6
supplementary insulation
insulation for personal safety between the intermediate mass and the vehicle mass
3.7
double insulation
insulation comprising both basic insulation and supplementary insulation
Note 1 to entry: According to EN 60077-1 the basic and supplementary insulation may also be interchanged (refer also to
Table 5).
3.8
functional insulation
insulation not for personal safety, with lower requirements, that ensures the function of the plant
Note 1 to entry: To some extent, the design is specified in the product standards.
3.9
nominal voltage U
n
designated value for a system to which the general characteristics are referred
3.10
rated voltage range U
Ne
voltage range which, together with rated current, defines the use of the equipment and to which the
applicable tests and the utilization categories are referred
3.11
highest permanent voltage U
max1
maximum voltage value likely to be present indefinitely
3.12
rated insulation voltage U
Nm
value to which the dielectric test voltages and the creepage distances are referred and which can in no
cases be lower than U
Ne
Note 1 to entry: When no value is defined by the purchaser for U , the maximum operating voltage U , given by
Nm max1
EN 50163 is due to be assumed.
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3.13
power frequency withstand voltage U
a
r.m.s. a.c. voltage which does not cause an insulation fault according to specified test conditions
3.14
highest non-permanent voltage U
max2
maximum voltage value likely to be present for a limited period of time
3.15
overvoltage
voltage having a peak value exceeding the corresponding peak value of maximum steady-state
voltage at normal operating conditions
3.16
long term overvoltage
overvoltage higher than U lasting typically for more than 20 ms, due to low impedance phenomena,
max2
for example a rise in substation primary voltage
3.17
highest long term overvoltage U
max3
voltage defined as the highest value of the long term overvoltage for t = 20 ms
3.18
maximum current
maximum current value which the current collection system is able to carry
3.19
maximum speed
maximum speed the vehicle can reach, to be taken into account for the current collection system to
guarantee a proper operation of the same
3.20
static contact force
→
value of force F (see Figure B.8) applied by the slipper on the contact line, as measured with standing
vehicle
Note 1 to entry: This value is referred to the mean height of the contact lines (see Figure B.2, dimension “d”), without
displacement of the vehicle from the lines axis.
3.21
dewirement
sudden and permanent detachment of the trolley of one or both poles from the overhead contact
line(s) with running trolley bus
3.22
overhead contact line
OCL
contact line which is placed above or beside the upper limit of the vehicle gauge and which supplies
traction units with electrical energy via roof-mounted current collection equipment
Note 1 to entry: The characteristics of the overhead contact line are due to be made known to the manufacturer, together
with the type of service, the environmental conditions and the road profile. Mechanical properties are given in EN 50119,
minimum heights are given in EN 50122-1.
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3.23
trolley bus displacement from OCL
allowed displacement of the vehicle axis from the longitudinal contact lines axis in both transversal
directions as indicated in dimension “g” of Figure B.2
Note 1 to entry: The minimum displacement is referred to the height “d” (see Figure B.2) and represents the allowed excess
of the gauge in respect to the gauge normally allowed by the legislation.
3.24
involved parties
- manufacturer: who actually is responsible for the design and the manufacture of the vehicle;
- supplier: who acts as selling partner in a contract;
- purchaser: who acts as purchasing partner in a contract;
- operator: the final entity which is entitled to use the vehicles for public service
3.25
main contactor
remote controlled, two pole circuit breaker to connect/disconnect the entire downstream installation in
normal service mode and emergency situations
Note 1 to entry: Design also is possible with a single pole circuit breaker for one polarity combined with a single pole
follower contactor for the other polarity or a two pole fuse combined with a two pole follower contactor.
4 Voltages and classification of the voltage bands
4.1 Voltages
4.1.1 General
The voltage definition
...