CLC/TS 50502:2008

SLOVENSKI STANDARD
01-oktober-2008
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SIST-TS CLC/TS 50502:2007
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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: CLC/TS 50502:2008
ICS:
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CLC/TS 50502
SPÉCIFICATION TECHNIQUE
July 2008
TECHNISCHE SPEZIFIKATION
ICS 45.060.01 Supersedes CLC/TS 50502:2007

English version
Railway applications –
Rolling stock –
Electric equipment in trolley buses –
Safety requirements and connection systems

Applications ferroviaires –  Bahnanwendungen –
Matériel roulant – Fahrzeuge –
Equipement électrique des trolleybus – Elektrische Ausrüstung in O-Bussen –
Exigences de sécurité et systèmes Sicherheitsanforderungen
de connexion und Verbindungssysteme

This Technical Specification was approved by CENELEC on 2008-05-09.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to
make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting
national standards in force.
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. CLC/TS 50502:2008 E
Foreword
This Technical Specification was prepared by SC 9XB, Electromechanical material on board rolling
stock, of Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways.
The text of the draft was submitted to vote in accordance with the Internal Regulations, Part 2,
Subclause 11.3.3.3 and was approved by CENELEC as CLC/TS 50502 on 2008-05-09.
This Technical Specification supersedes CLC/TS 50502:2007.
The following date was fixed:
– latest date by which the existence of the CLC/TS
has to be announced at national level (doa) 2008-11-09
__________
– 3 – CLC/TS 50502:2008
Contents
1 General . 4
1.1 Scope . 4
1.2 Normative references . 4
1.3 Definitions . 5
1.4 Voltages . 7
1.5 Classification of the voltage bands . 7
2 Trolley bus construction . 8
2.1 Protection and electrical safety criteria . 8
2.2 Electrical components in band III voltage (high voltage) . 10
2.3 Electric traction equipment . 10
2.4 Emergency running equipment (independent from OHL) . 11
2.5 Electrical components in band II voltage (medium voltage) . 12
2.6 Electrical components in band I voltage (low voltage) . 12
3 Checks and tests . 13
3.1 General . 13
3.2 New trolley-vehicles . 13
3.3 Overhauled trolley-vehicles . 19
3.4 On-duty trolley vehicles (periodical checks) . 20
3.5 Le ak ag e d et ec tors . 20
Annex A (normative) Constructional detailed provisions . 23
Annex B (normative) Trolley buses – Connection system to overhead
contact lines. 25
Annex C (normative) Constructional hints for connection systems . 40
Bib lio gr ap h y . 41
Figures
Figure 1 – Test circuits . 14
Figure 2 – Megaohmmeter connection . 17
Figure 3 – Megaohmmeter connection . 18
Figure 4 – Typical efficiency verification criteria for the leakage detector . 21
Figure B.1 – General characteristics of a typical current collector . 25
Figure B.2 – Preferred excursion of trolley poles versus distances of contact lines to
gr o u nd . 26
Figure B.3 – Example of coupling of rod with this head and underbase . 28
Figure B.4 – Typical trolley . 29
Figure B.5 – Typical slipper . 30
Figure B.6 – Devices (if any) for recovering and excursion limiting of rod ropes
position, overall dimensions and signalling . 33
Figure B.7 – Scheme of the verification of the slipping off of the current collector head . 38
Tables
Table 1 – Voltage bands for trolley buses . 8
Table 2 – Test voltages U based on rated insulation voltage U . 16
a Nm
Table 3 – Calibration of the insulation resistance . 21
Table 4 – Summary of electric tests . 22
Table B.1 – Summary of tests and checks . 35

1 General
1.1 Scope
This Technical Specification applies to electrical systems on board trolley buses, as defined in 1.3.1,
fed with a nominal line voltage (U ) between 600 V d.c. and 750 V d.c.
n
This Technical Specification defines the requirements and constructional hints, especially to avoid
danger of electrical kind to the public and to the personnel.
CLC/TS 50502 is normative only for vehicles ordered and designed after publication of the same.
This Technical Specification covers vehicles intended for public transport of persons.
It refers mainly to earthed networks, but reference is made also to galvanically insulated networks.
Annexes B and C are related to the connection systems. The detailed scope of these annexes is given
in Annex B.
1.2 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 45 Definition of weldability
EN 50119 Railway applications – Fixed installations – Electric traction overhead contact lines
EN 50121 series Railway applications – Electromagnetic compatibility
EN 50122-1 Railway applications – Fixed installations
Part 1: Protective provisions relating to electrical safety and earthing
EN 50124 series Railway applications – Insulation coordination
EN 50125 series Railway applications – Environmental conditions for equipment
EN 50153 Railway applications – Rolling stock – Protective provision relating to electrical
hazards
EN 50155 Railway applications – Electronic equipment used on rolling stock
EN 50163 Railway applications – Supply voltages of traction systems
1)
EN 50207 Railway applications – Electronic power converters for rolling stock
EN 50215 Railway applications – Testing of rolling stock after completion of construction and
before entry into service
1)
Superseded by EN 61287-1.
– 5 – CLC/TS 50502:2008
EN 50264 series Railway applications – Railway rolling stock cables having special fire
performance – Standard wall
EN 50272-3 Safety requirements for secondary batteries and battery installations
Part 3: Traction batteries
EN 50306 series Railway applications – Railway rolling stock cables having special fire
performance – Thin wall
EN 50343 Railway applications – Rolling stock – Rules for installation of cabling
EN 60077 series Railway applications – Electrical equipment for rolling stock
(IEC 60077 series, mod.)
EN 60322 Railway applications – Electrical equipment for rolling stock – Rules for power
resistors of open construction (IEC 60322)
EN 60349-1 Electric traction – Rotating electrical machines for rail and road vehicles
Part 1: Machines other than electronic convertor-fed alternating current motors
(IEC 60349-1)
EN 60349-2 Railway applications – Rotating electrical machines for rail and road vehicles
Part 2: Electronic converter-fed alternating current motors (IEC 60349-2, mod.)
EN 61373 Railway applications – Rolling stock equipment – Shock and vibration tests
(IEC 61373)
EN ISO 9001 Quality management systems – Requirements (ISO 9001)
ISO 10099 Pneumatic fluid power – Cylinders – Final examination and acceptance criteria
1.3 Definitions
For the purposes of this document, the following terms and definitions apply.
1.3.1
trolley bus
rubber tyred vehicle, connected to a direct current overhead contact line, driven by one or more
electrical motors. The conductors of the overhead contact line are either both insulated or one
insulated and one earthed
1.3.2
current collection system
the whole of the components, generally mounted on the vehicle roof, having the task of taking the
current from the overhead lines to supply the equipment of the vehicle, both in standing and in running
conditions
1.3.3
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; the equipment defined in 2.6.1 as normal
bus vehicle components are not covered in this definition. The conductive parts of the chassis and of
the bodywork are defined as the vehicle mass

1.3.4
intermediate mass
conductive part comprised between two insulating parts of a double insulated equipment (protection,
enclosure, etc.), which shall be in any case not accessible to the public
1.3.5
main insulation
insulation between the electric parts which are subject to be energized and the intermediate mass
NOTE In EN 50124-1 this insulation is named “basic insulation” and is defined as the insulation applied to live parts to provide
basic protection against electric shock.
1.3.6
supplementary insulation
insulation between the intermediate mass and the vehicle mass
1.3.7
double insulation
insulation comprising both main (basic) insulation and supplementary insulation
1.3.8
nominal voltage U
n
voltage value with which the system or one part of the same is nominated and which the general
characteristics are referred to
1.3.9
rated voltage U
Ne
voltage which, together with rated current, defines the use of the equipment and which the applicable
tests and the use categories are referred to
1.3.10
rated insulation voltage U
Nm
value the dielectric test voltages and the creepage distances are referred to. In no cases this value
can be lower than U . When no value is defined by the purchaser for U , the maximum operating
Ne Nm
voltage U , given by EN 50163 shall be assumed
max1
1.3.11
power frequency withstand voltage U
a
r.m.s. a.c. voltage which does not cause an insulation fault according to specified test conditions
1.3.12
highest non-permanent voltage U
max2
maximum value of the voltage likely to be present for maximum 5 min
1.3.13
maximum current
maximum current value which the current collection system is able to carry
1.3.14
maximum speed
maximum speed the vehicle can reach, to be taken into account for the connection system to
guarantee a proper operation of the same
1.3.15
static contact force
→
value of force F (see Figure B.7) applied by the slipper on the contact line, as measured with standing
vehicle. 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 l
...