CLC/TS 50717:2022
(Main)Technical Requirements for Current Collectors for ground-level feeding system on road vehicles in operation
Technical Requirements for Current Collectors for ground-level feeding system on road vehicles in operation
This document specifies the general characteristics which are to be applied to ground level current collector devices, to enable conductive current collection by road vehicles from a feeding track integrated in the roadway. It defines the interfaces between the current collector device and its environment as well as the electrical safety concept. It also specifies the necessary tests for the current collector devices and gives recommendations for their maintenance. This document is applicable to current collector devices on road vehicles for ground-level feeding operation on electrified public roads and highways. This document is not applicable to motorcycles (including tricycles and quadricycles). This document is not applicable to vehicles or electric buses with dynamic or static inductive charging systems and related power supplies.
Technische Anforderungen an Stromabnehmer für bodennahe Einspeiseanlagen in Straßenfahrzeugen im Betrieb
Exigences techniques relatives aux capteurs de courant pour les systèmes d'alimentation au sol sur les véhicules routiers
Tehnične zahteve za tokovne odjemnike za prizemno električno napajanje za cestna vozila v obratovanju
Ta dokument določa splošne lastnosti, ki jih je treba zagotoviti tokovnim odjemnikom na tleh za odjem konduktivnih tokov s strani cestnih vozil iz napajalne tračnice, vgrajene v cestišče.
Določa vmesnike med tokovnim odjemnikom in njegovo okolico ter koncept električne varnosti.
Prav tako določa potrebne preskuse za tokovne odjemnike in navaja priporočila za njihovo vzdrževanje.
Ta dokument se uporablja za tokovne odjemnike na cestnih vozilih za talno napajanje na elektrificiranih javnih cestah in avtocestah.
Dokument se ne uporablja za motorna kolesa (vključno s trikolesnimi in štirikolesnimi vozili).
Dokument se ne uporablja za vozila ali električne avtobuse z dinamičnim ali statično induktivnim sistemom polnjenja in s tem povezanim napajanjem.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2023
Tehnične zahteve za tokovne odjemnike za prizemno električno napajanje za
cestna vozila v obratovanju
Technical Requirements for Current Collectors for ground-level feeding system on road
vehicles in operation
Technische Anforderungen an Stromabnehmer für bodennahe Einspeiseanlagen in
Straßenfahrzeugen im Betrieb
Exigences techniques relatives aux capteurs de courant pour les systèmes
d'alimentation au sol sur les véhicules routiers
Ta slovenski standard je istoveten z: CLC/TS 50717:2022
ICS:
43.120 Električna cestna vozila Electric road vehicles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL SPECIFICATION CLC/TS 50717
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION December 2022
ICS 43.120
English Version
Technical Requirements for Current Collectors for ground-level
feeding system on road vehicles in operation
Exigences techniques relatives aux capteurs de courant Technische Anforderungen an Stromabnehmer für
pour les systèmes d'alimentation au sol sur les véhicules bodennahe Einspeiseanlagen in Straßenfahrzeugen im
routiers Betrieb
This Technical Specification was approved by CENELEC on 2022-11-07.
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, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TS 50717:2022 E
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Abbreviations .10
5 Current collector device main characteristics .10
6 Interface requirements .11
6.1 General .11
6.2 Interface with conductive segments and feeding track (interface number 1) .11
6.3 Interface with ERS Vehicle Power supply management system (interface number 2) .11
6.4 Interface with ERS control devices (interface number 3) .12
6.5 Interface with extra-low voltage (ELV) power supply (interface number 4) .12
6.6 Interface with the vehicle chassis (interface number 5) .12
7 Technical requirements .12
7.1 General .12
7.2 Gauge .12
7.3 Working range of the current collector .12
7.4 Electrical values .13
7.5 Force requirements .13
7.6 Wearing strip .13
7.7 CCD actuator system .13
7.8 Weak link .13
7.9 Mass and force in the vehicle chassis .13
7.10 Protection against corrosion .14
7.11 Marking .14
8 Environmental requirements .14
8.1 General .14
8.2 Environmental conditions .14
8.3 Electrical disturbances .15
8.4 Noise .15
9 Operational requirements .15
9.1 Physical CCD states .15
9.2 Operational speed .17
9.3 Communication .17
10 Reliability and availability requirements .17
11 Safety requirements .17
12 Validation requirements .17
12.1 Categories of tests .17
12.2 General tests .18
12.3 Operating tests .19
12.4 Endurance tests .20
12.5 Dielectric test (Type and Routine test) .21
12.6 Sealing Test (Type Test) .21
13 Maintenance requirements .23
Annex A (informative) ERS architecture .24
General .24
A.1
A.2 ERS Traction Power Supply equipment .25
A.3 ERS On-board equipment .26
Annex B (normative) Mechanical interface between CCD and infrastructure equipment .27
B.1 General .27
B.2 Mechanical interface for type A system .27
B.3 Mechanical interface for type B system .27
B.4 Mechanical interface for type C system .28
Annex C (normative) Communication interface between CCD and infrastructure equipment .30
C.1 Communication interface for type A system .30
C.2 Communication interface for type B system .31
C.3 Communication interface for type C system .32
Bibliography .33
European foreword
This document (CLC/TS 50717:2022) has been prepared by CLC/TC 9X/WG 30 “Technical Requirements for
Current Collectors for ground-level feeding system on road vehicles in operation”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a Standardization Request given to CENELEC by the European
Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national committee. A complete
listing of these bodies can be found on the CENELEC website.
Introduction
Road traffic borne carbon dioxide and other emissions create a growing challenge that needs to be overcome
to achieve commonly agreed climate targets.
This document is limited to current collector devices used in ground-based conductive feeding system by
contact. The dynamic electric power supply of a road vehicle is achieved by the collection of current from the
metallic segments at road level by means of one or more current collector devices installed underneath the
electric vehicle or coupled traction trailers.
As road traffic is highly internationalized and standardized, Electric Road System (ERS) solutions for dynamic
supply of vehicles need to be standardized.
The current collector device interoperability objectives are defined between countries and vehicle types, but
not between ground-based conductive feeding system technical solutions.
NOTE Annex A presents the architecture for the whole Electric Road System (ERS) for information.
1 Scope
This document specifies the general characteristics which are to be applied to ground level current collector
devices, to enable conductive current collection by road vehicles from a feeding track integrated in the
roadway.
It defines the interfaces between the current collector device and its environment as well as the electrical safety
concept.
It also specifies the necessary tests for the current collector devices and gives recommendations for their
maintenance.
This document is applicable to current collector devices on road vehicles for ground-level feeding operation
on electrified public roads and highways.
This document is not applicable to motorcycles (including tricycles and quadricycles).
This document is not applicable to vehicles or electric buses with dynamic or static inductive charging systems
and related power supplies.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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 50121-1:2017, Railway applications — Electromagnetic compatibility — Part 1: general
EN 50121-2:2017, Railway applications — Electromagnetic compatibility — Part 2: Emission of the whole
railway system to the outside world
EN 50121-5:2017, Railway applications — Electromagnetic compatibility — Part 5: Emission and immunity of
fixed power supply installations and apparatus
EN 50125-1:2014, Railway applications — Environmental conditions for equipment — Part 1: Rolling stock
and on-board equipment
EN 50125-2:2002, Railway applications — Environmental conditions for equipment — Part 2: Fixed electrical
installations
EN 50126-1:2017, Railway Applications — The Specification and Demonstration of Reliability, Availability,
Maintainability and Safety (RAMS) – Part 1: Generic RAMS process
EN 50163:2004, Railway applications — Supply voltages of traction systems
EN 60529:1991, Degrees of Protection Provided by Enclosures (IP Code)
EN 61373:2010, Railway applications — Rolling stock equipment — Shock and vibration tests
IEC 60068-2-64:2008+AMD1:2019, Environmental testing — Part 2-64: Tests — Test Fh: Vibration,
broadband random and guidance
ISO 4892-2:2013, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenonarc lamps
ISO 7637-2:2011, Road vehicles — Electrical disturbances from conduction and coupling
ISO 9227:2017, Corrosion tests in artificial atmospheres — Salt spray tests
As impacted by EN 50125-2:2002/corrigendum Jun. 2010.
As impacted by EN 60529:1991/corrigendum May 1993, EN 60529:1991/A1:2000, EN 60529:1991/A2:2013,
EN 60529:1991/AC:2016-12, EN 60529:1991/A2:2013/AC:2019-02.
ISO 10605:2008, Road vehicles — Test methods for electrical disturbances from electrostatic discharge
ISO 16750-2:2012, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 2: Electrical loads
ISO 16750-3:2012, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 3: Mechanical loads
ISO 16750-4:2010, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 4: Climatic loads
ISO 16750-5:2010, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 5: Chemical loads
ISO 20653:2013, Road vehicles — Degrees of protection (IP code) — Protection of electrical equipment
against foreign objects, water and access
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/
3.1
electric road system
ERS
system that enables dynamic power transfer to ERS vehicles whilst they are driving
Note 1 to entry: By integrating power transfer technology into existing road infrastructure, an electrified road will be
accessible to both vehicles that use power transmission and other vehicles.
3.2
current collector device
CCD
retractable mechanical apparatus mounted underneath the vehicle which is intended to collect by contact the
current from ERS segments
Note 1 to entry: CCD is “on” when supplied with ELV and “off” when it is not supplied.
3.3
wearing strip
part of the collector shoe which is the friction and wearing part of the CCD
3.4
collector shoe
part of the current collector device which is lowered to be in contact with the conductive segment and collects
power through its wearing strips
3.5
CCD control unit
electronic device responsible for managing the positions of the retractable current collector device
3.6
actuator system
system used to operate the current collector device from one position to another
3.7
on rail position
running position of the collector shoe at which it touches the conductor rail and at which it is able to draw the
electrical power dependent upon the track load conditions
[SOURCE: EN 50702:2021, 3.8]
3.8
retracted position
position where the collector shoe is retracted from the conductor rail by the means of a mechanism system
[SOURCE: EN 50702:2021, 3.9 modified – “(pneumatic or manual)” removed]
3.9
cleared state
retracted position of the CCD with additional interlocking (e.g. position sensor)
Note 1 to entry: Position of the CCD when the vehicle is not on an electric road.
3.10
feeding track
continuous insulated track integrated into the roadway and containing the conductive segments
3.11
electrical section
part of the feeding track that is powered and controlled by a main circuit breaker
3.12
conductive segment
elementary longitudinal element of the feeding track composed of the metallic parts in interface with the CCD
to transfer the current and bring back the return current
3.13
ERS vehicle
standard vehicle which is compatible with ERS
3.14
ERS vehicle power supply management system
part of the ERS vehicle which contains all components providing or managing the power transfer from the ERS
Traction Power Supply sub-system to the battery or the drive management system, e.g. DC/DC converter,
galvanic isolation
3.15
ERS control devices
part of the ERS vehicle which contains all components providing or managing the interface between the CCD
and the vehicle
3.16
rated voltage,
voltage at which the current collector device is designed to function
3.17
rated current,
average value of the current withstand for a given time by the current collector device at standstill
[SOURCE: EN 50702:2021, 3.12]
3.18
maximum current,
maximum value of the current withstand by the current collector device at standstill for a given time
[SOURCE: EN 50702:2021, 3.13]
3.19
rated current,
continuous current transfer capacity of the current collector device
[SOURCE: EN 50702:2021, 3.14]
3.20
short circuit current
maximum current that the current collector device is expected to withstand under abnormal conditions, when
there is a fault and the protection system has been operated to protect against fault
Note 1 to entry: Typical fault clearance times varying from a few tens of milliseconds through to half a second dependent
upon the protection operation.
[SOURCE: EN 50702:2021, 3.15]
3.21
type test
conformity test made on one or more items representative of the production
[SOURCE: IEC 60050-151:2001, 151-16-16]
3.22
routine test
conformity test made on each individual item during or after manufacture
[SOURCE: IEC 60050-151:2001, 151-16-17]
3.23
gauge,
space envelope dedicated for the current collector device, normally defined by the vehicle manufacturer and
where all parts of the equipment are bound to remain during operation
3.24
extra-low voltage
ELV
voltage normally not exceeding 50 V alternating current (AC) or 120 V ripple free direct current (DC) whether
between conductors or to earth
Note 1 to entry: This includes SELV, PELV and FELV (see HD 60364-4-41).
[SOURCE: IEC 60050-826:2004, 826-12-30, modified – “the relevant voltage limit of band I specified in
IEC 60449” has been replaced by “50 V alternating current (AC) or 120 V ripple free direct current (DC)
whether between conductors or to earth”. The note 1 to entry has been added.]]
3.25
low voltage
LV
voltage normally not exceeding 1 000 V AC or 1 500 V DC
[SOURCE: IEC 60050-195:2021, 195-05-25, modified – The content of the notes 1 and 2 to entry have been
merged in the definition.]
3.26
high voltage
HV
voltage normally exceeding the conventionally adopted limit for low voltage
[SOURCE: IEC 60050-195:2021, 195-05-26]
4 Abbreviations
CCD: Current collector device
ELV: Extra-Low Voltage
EMC: Electro Magnetic Compatibility
ERS: Electric Road System
HV: High Voltage
IP: Ingress Protection
LV: Low Voltage
MRT: Mean Repair Time
MTBF: Mean Time Between Failures
RMS: Root Mean Square
UV: Ultra-Violet
5 Current collector device main characteristics
The current collector device (CCD) is a retractable mechanical apparatus located underneath the vehicle to
collect by contact the current from a feeding track and to transfer it to the vehicle.
The main components of the CCD are described in Figure 1.
Key
1 Wearing strips 8 ELV power cable
2 Collector shoe 9 Control and Communication cable
3 Mechanical arm 10 Feeding track
4 Actuator 11 Conductive segments
5 Mechanical interface 12 ERS Vehicle Power Supply Management System
6 CCD Control unit 13 Vehicle control unit
7 Power supply cables 14 Vehicle low voltage battery
Figure 1 — Current collector device main components
NOTE ERS current collector device has variations in design and characteristics. Different types of ERS current
collector device are described in Annex B.
6 Interface requirements
6.1 General
Figure 2 shows the main interfaces of the current collector device:
Figure 2 — ERS vehicle schematic
These interfaces are described in 6.2 to 6.6.
6.2 Interface with conductive segments and feeding track (interface number 1)
There are two interfaces to be considered between the current collector device and the conductive segments:
a mechanical interface and an electrical interface.
• The design of collector shoes shall ensure a good continuous sliding contact to manage the power transfer
efficiently.
• The current collector shoes shall be strong enough to withstand at maximum operating speed impact with
gravels or small objects that may be on the ERS segments.
• The collector shoes shall be made from a material which causes appropriate wear on the ERS segment
so that the ERS segments fulfils its lifespan requirements.
• During current collection, the collector shoes shall guarantee good contact with the feeding and the current
return parts of the ERS segments to minimize arcing or cut in power transfer.
In addition, the CCD Control Unit via the Current collector device shall be able to communicate with the
infrastructure ERS equipment. It shall transmit at least the vehicle presence and information about its speed.
The different types of ERS Current collector device are presented in Annex B.
6.3 Interface with ERS Vehicle Power supply management system (interface number 2)
There is only an electrical interface between the CCD and the ERS Vehicle Power Supply management
system.
Once the CCD collects the energy from the feeding track, it transfers this energy to the ERS vehicle through
the different power supply devices composing the ERS Vehicle Power Supply Management System.
The feeder cables used for the interface between the CCD and the ERS Vehicle Power Supply Management
System shall be designed to withstand the maximum RMS current within the worst environmental conditions.
NOTE Refer to 7.4 for more details.
6.4 Interface with ERS control devices (interface number 3)
There is only a communication interface between the CCD and the ERS control devices.
The actuators and the sensors of the current collector device shall be in interface with the CCD Control Unit
that monitors and controls them.
The CCD control unit shall continuously monitor the current collector device via the sensors.
The CCD control unit shall be able to control the positions of the CCD according to the needs of the vehicle
and according to safety.
6.5 Interface with extra-low voltage (ELV) power supply (interface number 4)
There is only an electrical interface between the CCD and the ELV power supply as all the electronic
components of the CCD require an extra-low voltage (ELV) power supply source coming from the ERS vehicle.
The ELV power supply in interface shall comply with ISO 16750-2 and ISO 7637-2.
6.6 Interface with the vehicle chassis (interface number 5)
There is a mechanical interface between the CCD and the ERS vehicle.
The vehicle manufacturer shall export to the CCD supplier the shock and vibration requirements according to
EN 61373 as well as its vehicle characteristics (suspension, speed limits, anchoring system…).
The anchoring system on the vehicle chassis shall be designed according to these requirements and the
weight of the CCD.
7 Technical requirements
7.1 General
All general characteristics are given in the vehicle manufacturer’s specifications. Unless otherwise specified,
environmental conditions are defined in EN 50125-1:2014. The category of environment shall be specified by
the vehicle manufacturer.
7.2 Gauge
The current collector device in all positions shall be inside the specified gauge which is provided by the vehicle
manufacturer.
NOTE Gauge is defined according to ERS vehicle type.
7.3 Working range of the current collector
The vehicle manufacturer’s specification should state the values for the working range of the current collector
device (distance d and angle α) according to dynamic movement of the vehicle, as shown in Figure 3.
Figure 3 — Working range parameters
NOTE Working range is defined according to ERS vehicle type.
7.4 Electrical values
The CCD shall be designed for the nominal DC voltage of 750 V as defined in EN 50163:2004.
NOTE Other ERS standardization processes and other DC voltages will also be considered to enable the usage of
consistent drivetrain technology.
A two-phase AC feeding system may be used, with a line-to-line voltage of 800 V RMS.
Additionally, the CCD shall be supplied with a nominal extra-low voltage of 12 V DC or 24 V DC. This voltage
shall in any case remain between the range of +8 V DC and +16 V DC (code B) or +16 V DC and +32 V DC
(code F) based on ISO 16750-2 for Power Supply System.
7.5 Force requirements
Static contact forces applied to the conductive segments during normal operation shall be defined by the CCD
supplier. Static contact forces measured on the whole working range of the collector shoe shall lie within the
boundaries defined in the vehicle manufacturer’s specification.
7.6 Wearing strip
The material of the wearing strip shall preferably be cast-iron, stainless steel, mixed alloys or any equivalent
in terms of abrasion to enable a moderated erosion of the wearing strip, compatible with vehicle manufacturer's
maintenance cycle.
7.7 CCD actuator system
The CCD actuator system should be specified (pneumatic, hydraulic, electric and/or mechanical actuated).
The CCD actuator system shall be designed such that the collector shoe may be disconnected from the
conductor rail within a short time to be defined for preventing electrical flashes.
7.8 Weak link
If required in the vehicle manufacturer specification, a weak link shall allow a rupture of the collector shoe in
the event of a collision.
7.9 Mass and force in the vehicle chassis
The mass of the current collector device and the maximum force at every fixing point shall be specified.
Additionally, all relevant parameters shall be specified to enable the calculation of the maximum efforts at every
fixing point.
7.10 Protection against corrosion
The requirements for the corrosion protection application and the type of corrosion protection shall be given in
the vehicle manufacturer’s specification.
7.11 Marking
As a minimum, the following shall be labelled on the current collector device:
— manufacturer's name;
— article number;
— serial number;
— revision or modification level.
If requested by the vehicle manufacturer:
— Nominal Voltage;
— type of current collector;
— weight of current collector;
— nominal current.
Taking into consideration operation in a road environment, the label shall be readable after cleaning.
8 Environmental requirements
8.1 General
The main function of the current collector device is to transfer current from the ERS segments at ground-level
to the vehicle. This is achieved thanks to the collector shoes of the CCD that are lowered and put in contact
with powered ERS segments when it is in operation.
The CCD shall be designed to work under defined operational and environmental conditions and to perform
safely the requested technical functionalities.
8.2 Environmental conditions
The following environmental conditions are specified as minimum requirements to be achieved. Those
requirements may be extended according to the climate use case and the vehicle manufacturer’s specification:
• Operational temperature range: −20 °C to +50 °C. Test according to ISO 16750-4:2010.
• Corrosion protection against salt mist: ISO 9227:2017 for 240 h (10 cycles). (Alternative: IEC 60721-3-5],
Table 3, A.3.3.)
• Ingress protection: IP54 according to ISO 20653:2013.
• UV resistance: according to ISO 4892-2:2013.
• Mechanical vibration and resonance search: according to IEC 60068-2-64:2008+AMD1:2019.
• Mechanical shock: according to ISO 16750-3:2012.
• Design life: Minimum 7 years with 1 000 h of operation and 1 000 cycles per year.
• Chemical resistance: according to ISO 16750-5:2010.
• Relative Humidity: up to 100 % (rain) according to EN 50125-1:2014, 4.4, pp. 7.
• EMC requirements, emission: [EN 50121-1] - [EN 50121-2] - EN 50121-5 :2017.
NOTE UN ECE 10/R5 also provides requirements on this topic.
• EMC requirements, immunity: EN 50121-5 :2017.
• Electrostatic discharge (ESD) protection: test according to ISO 10605:2008 and IEC 61000-4-2.
• Altitude class: A2 as specified in EN 50125-2 – with altitudes up to 1 000 m. This corresponds to an air
pressure in the range from 89,9 kPa (1 000 m) to 106,9 kPa (−400 m) at normal pressure of 101,325 kPa
at sea level according to EN 60721-2-3:2014. Low air pressure shall be considered for insulation, heat
dissipation and accelerated temperature-related effects (evaporation of plasticizers, volatilization of
lubricants).
8.3 Electrical disturbances
For electrical disturbances, the CCD shall be compliant to ISO 7637-2.
Electrical disturbances shall be performed according to ISO 10605:2008.
8.4 Noise
NOTE For the noise emissions of the CCD, see the requirements in UN ECE-R51.03.
The additional noise caused by the CCD shall be negligible in comparison to other sound sources i.e. diesel
engine or wheels.
9 Operational requirements
9.1 Physical CCD states
The CCD can either be “on” or “off”.
When “off”, the CCD shall be verified in retracted position (cleared state).
When switched “on”, the CCD shall be initialized in a cleared state and the CCD control unit shall monitor
continuously the CCD state by means of position sensors or equivalent. The CCD shall remain in this state
without any request from the CCD control unit.
During normal operation, once authorized by the CCD control unit, the CCD shall change its state from a
cleared state to an on rail position. This lowering operation shall be completed in less than 2 s.
If the lowering operation of the CCD is aborted, the CCD shall change its state from lowering to lifting.
From this position, once requested by the CCD control unit, the CCD shall change its state from an on rail
position to a retracted position. This lifting operation shall be completed in less than 1 s.
In case of emergency, triggered by the driver or the CCD control unit, the CCD shall be lifted automatically in
cleared state.
The positions of the current collector devices are managed by CCD control unit as shown in Figure 4.
Figure 4 — CCD state diagram
An optional intermediate state in the lowering of the CCD may be used between the retracted position and the
on-rail position. This intermediate state is used for certain ground level feeding systems where positioning of
the CCD is required to connect to the feeding track. If applied, the maximum lowering time of 2 s may be used
for the transition between the intermediate state and the on-rail position.
Table 1 provides further description on CCD states which are to be transmitted to the vehicle via the CCD
control devices.
Table 1 — CCD states description
CCD State Description
0: Initializing The current state and position of the CCD are unknown. The CCD is usually lifted, but it could
be lowered as well, e.g. during service. After power on, the CCD will be in this state for e.g. self-
tests.
1: Retracted The CCD is in retracted position and without faults. All actuators are deactivated. Only when
verified (cleared state), a lowering request is allowed.
The CCD is lowering but has no or no safe contact with the feeding track. It is without faults.
2: Lowering
The duration of this state is limited. If the CCD does not detect a feeding track within 2 s, it
stops lowering and lifts.
3: Lifting The CCD is lifting, but it is not in cleared position. It is without faults. The duration of this state is
limited. If the CCD does not detect the cleared position within 1 s, it shall change into state
"Error".
4: On rail The CCD is lowered and has safe contact with the feeding track. It is without faults.
5: Warning A fault occurred in the CCD. The CCD is in retracted position or lifts to the retracted position. It
is possible to drive within this state but is it not possible to trigger the lowering of the CCD. If it
was a temporary fault, the CCD will go to state "Retracted" after a few seconds. Otherwise, it
will stay in this state until power off. The CCD shall be inspected in a workshop, if it is
permanently in state "Warning" or if this state occurs very often.
6: Error The CCD should be in retracted position, but it is not. This state shall be activated if the CCD
starts to lift (state "Lifting" or state "Warning") and does not reach the retracted position within
1 s or if the CCD leaves the retracted position without lowering request from the vehicle. Driving
in this state is very dangerous. The CCD can collide with any obstacle on the road. The driver
shall stop immediately and carefully with respect to the other traffic and check visually the
position of the CCD. If state "Error" is signalized permanently, but the CCD is in retracted
position, the driver shall deactivate the CCD manually. If the CCD is not in cleared state, it is
not allowed to drive.
>= 7 Undefined These states are reserved for future applications.
9.2 Operational speed
The CCD shall be capable to operate when the vehicle is travelling between a minimum and a maximum speed
in forwards driving.
Due to the different technologies and use cases for the overall ERS system, these operational speeds may
vary.
Outside the boundaries defined, no power transfer shall be authorized.
9.3 Communication
In normal operation on a feeding track, the vehicle through the CCD shall send at least a presence signal to
the feeding track on order to authorize power transfer.
The characteristics of the presence signal may be of different types (analogue or digital for instance). This
communication may be bidirectional, and a lot of data may be exchanged.
The communication between the vehicle and feeding track should follow as much as possible the
recommendations from IEC 61851-24 for DC systems.
For AC systems, the communication requirements shall be equivalent to the one used for the DC systems.
NOTE Refer to Annex C for more details regarding communication interface.
10 Reliability and availability requirements
As per all equipment in automotive and railway industries, the availability and the reliability are key data.
Therefore MTBF and MRT shall be provided for operational and maintenance purposes.
For each component, the MTBF and MRT shall be defined according to EN 50126-1.
11 Safety requirements
The CCD shall at least respect the following safety requirements to authorize the feeding to provide power to
the vehicle:
• The CCD shall not generate debris on the road.
• Except for traction circuits, every part of the CCD which may potentially be at the traction voltage shall not
transfer this voltage to the other parts of the CCD or to the vehicle.
12 Validation requirements
12.1 Categories of tests
12.1.1 Overview
There are four categories of tests:
— type tests;
— routine tests;
— investigation tests;
— combined tests.
The tests, mentioned above, are described in 12.1.2 to 12.1.5. See also Table 2.
12.1.2 Type tests
Type tests shall be performed on a single piece of apparatus of a given design. Equipment in current
manufacture shall be considered to have satisfied the type tests and shall be exempted from them, if the
manufacturer provides signed reports of type tests already made on identical or derived apparatus constructed
previously. A derived product might have different interfaces to the vehicle, but the main dimensions and
functions shall be the same. For derived products, a declaration of conformity is mandatory.
Supplementary type tests shall be required if they are requested in the vehicle manufacturer’s specification.
12.1.3 Routine tests
Routine tests shall be carried out to verify that the properties of a product correspond to those measured during
the type test. Routine tests shall be performed by the supplier on each equipment. For certain equipment, after
agreement between vehicle manufacturer and supplier, routine tests may be replaced by sampling tests
(sampling rate shall be agreed between supplier and vehicle manufacturer).
12.1.4 Investigation tests
Investigation tests are special tests, which are supplementary, and performed on a single item to obtain
additional information. They are required only if they are specified in the vehicle manufacturer’s specification.
The acceptance of the apparatus shall not rely on the results of these investigation tests.
12.1.5 Combined tests
Combined tests are special and supplementary tests which may only be carried out in an operating
environment. They shall take into account the type of vehicle to be used, its speed and direction of travel. They
shall be carried out using the track and/or defined in the vehicle manufacturer’s specification. These tests apply
to both basic and derived current collector models. Combined tests shall be negotiated between the supplier
and the vehicle manufacturer.
12.2 General tests
12.2.1 Visual inspection (routine test)
This task is performed on a fully assembled series production product.
Test acceptance criteria:
a) All bolting hardware shall be marked with a special paint. The whole joint shall be covered with a
continuous line. In case of missing paint, the product shall be checked with an appropriate torque wrench
set to 80 % of the supposed applied torque for the bolt.
b) Use care with small parts especially small washers and bolts that could be hidden by other parts.
c) The current collector device shall include all electrical and mechanical components. It shall be free from
physical defects and surface treated (see 7.10).
d) No scratch or trace on painting areas shall be noticed.
e) Use care when handling the product at this stage.
f) Check all labels required as per the vehicle manufacturer’s specification. It includes hazard labels.
12.2.2 Weight measurement (Type test)
The current collector device shall be completely assembled.
The product is then put on a scale of the appropriate accuracy with 1 % (range: 100 kg or more).
As a minimum, the following measurements shall be carried out:
a) Measurement of bolting points layout.
b) Measurement of outline dimensions of the product.
Test acceptance criteria:
1) The measured mass shall be within the tolerance of the contractual mass stated on the main assembly
drawing.
12.2.3 Dimensions (Type test)
The dimensions of current collector device (including tolerances), as specified on the drawings, shall be verified
with an appropriate measurement apparatus.
Test acceptance criteria:
a) The dimensions shall be within tolerances specified on the drawings.
12.2.4 Identification (Routine test)
Test acceptance criteria:
a) All marking labels or firm labels shall be checked and compared to the manufacturing order to make sure
of a right identification.
b) Check all labels required (hazard labels, etc.).
c) The marking shall comply with the requirements described in 7.11.
12.3 Operating tests
12.3.1 Measurement of static force at ambient temperature (Routine test)
The measuring device shall be so installed that the force application is vertical at the middle of the collector
shoe.
Test acceptance criteria:
a) The measured forces shall comply with 7.5.
12.3.2 Checking of the actuator system of the current collector device (Routine test)
The current collector device shall be coupled to the whole actuator system. The test shall be carried out at
rated ambient temperature and at rated air supply pressure or rated voltage in the case of an electrical actuator
system.
Test acceptance criteria:
a) The movement from the on-rail position to the retracted position shall be achieved in a time of less than
indicated in specification.
b) The movement from the retracted position to the on-rail position shall be achieved in a time of less than
indicated in specification.
12.3.3 Operating climatic test (Type test)
The tests as described in 12.3.2 shall be carried out at the extremes of temperature and humidity specified in
the vehicle manufacturer specification. The above tests, at the extremes of temperature shall also be carried
out at the minimum and maximum values of air pressure or voltage specified in the vehicle manufacturer
specificat
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