SIST EN 50702:2021
(Main)Railway applications - Rolling stock - Third rail current collectors (shoegear): Characteristics and tests
Railway applications - Rolling stock - Third rail current collectors (shoegear): Characteristics and tests
The document specifies the tests for the current collectors to enable current collection from the third or fourth rail system as well as associated fuses and short circuit devices. It also specifies the general assembly characteristics to be applied to current collectors. This document is applicable to all types of vehicles with third or fourth rail current collectors. This document does not apply to roof mounted pantographs.
Bahnanwendungen – Fahrzeuge – Stromabnehmer für Stromschienen (Schleifschuhträger): Merkmale und Prüfungen
Applications ferroviaires - Matériel roulant - Appareil de prise de courant sur le rail de contact (capteur de courant) : Caractéristiques et essais
Le présent document spécifie les essais concernant les appareils de prise de courant pour le troisième ou quatrième rail, ainsi que les fusibles et les dispositifs de court-circuit associés. Il spécifie également les caractéristiques générales d'assemblage applicables aux appareils de prise de courant. Le présent document s'applique à tous les types de véhicules équipés d'appareils de prise de courant pour le troisième ou quatrième rail. Il ne s'applique pas aux pantographes montés sur le toit.
Železniške naprave - Vozna sredstva - Tokovni odjemniki s tretje tirnice (čevlji) - Karakteristike in preskusi
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50702:2021
01-september-2021
Železniške naprave - Vozna sredstva - Tokovni odjemniki s tretje tirnice (čevlji) -
Karakteristike in preskusi
Railway applications - Rolling stock - Third rail current collectors (shoegear):
Characteristics and tests
Ta slovenski standard je istoveten z: EN 50702:2021
ICS:
45.060.10 Vlečna vozila Tractive stock
SIST EN 50702:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50702:2021
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SIST EN 50702:2021
EUROPEAN STANDARD EN 50702
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2021
ICS 45.060.10
English Version
Railway applications - Rolling stock - Conductor rail current
collectors (shoegear): Characteristics and tests
Applications ferroviaires - Matériel roulant - Appareil de Bahnanwendungen - Fahrzeuge - Stromabnehmer für
prise de courant sur le rail de contact (capteur de courant) : Stromschienen (Schleifschuhträger): Merkmale und
Caractéristiques et essais Prüfungen
This European Standard was approved by CENELEC on 2021-04-12. 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, 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,
Turkey 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50702:2021 E
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EN 50702:2021 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Abbreviations . 9
5 Technical requirements . 9
5.1 General . 9
5.2 Gauge . 9
5.3 Working range of the current collector . 9
5.4 Electrical values . 9
5.5 Force requirements . 9
5.6 Collector shoe . 9
5.7 Operating system .10
5.8 Weak link .10
5.9 Current collector mass and force in the bogie .10
5.10 Protection against corrosion .10
6 Marking .10
7 Tests .10
7.1 Categories of tests .10
7.1.1 Overview .10
7.1.2 Type tests .11
7.1.3 Routine tests .11
7.1.4 Investigation tests .11
7.1.5 Combined tests .11
7.2 General tests .11
7.2.1 Visual inspection (routine test) .11
7.2.2 Weight measurement (type test) .11
7.2.3 Dimensions (type test) .12
7.2.4 Identification (routine test) .12
7.2.5 Test weak link (type test) .12
7.3 Operating tests .14
7.3.1 Measurement of static force at ambient temperature (routine test) .14
7.3.2 Checking of the operating system of the current collector (if applicable) .15
7.3.3 Operating climatic test .15
7.3.4 Combined operating climatic test at vehicle .15
7.4 Endurance tests .15
7.4.1 Operation between retracted position and working position .15
7.4.2 Operation within working range .15
7.4.3 Resistance to vibrations .16
7.5 Resistance to shocks caused by collector shoe frequently approaching current rail
ramps .16
7.6 Air tightness tests .16
7.6.1 General .16
7.6.2 Air tightness tests on operating device cylinder .16
7.6.3 Tightness climatic test .17
7.6.4 Tightness test of short circuiter cylinders .17
7.7 Current collection tests (combined test, informative) .17
7.7.1 General .17
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7.7.2 Measurement of surrounding conditions . 18
7.7.3 Pre-conditions for test runs . 18
7.7.4 Measurement of electric energy transmission . 19
7.8 Heating tests . 19
7.8.1 Objective . 19
7.8.2 Heating tests: rated and maximum current, vehicle at standstill (supplementary type
test) . 19
7.8.3 Heating tests: rated and maximum current, vehicle with traction (mandatory type test) . 20
7.8.4 Short Circuit Test for maximum short circuit current and duration (mandatory type test) 21
7.8.5 Field Test (supplementary type test) . 22
7.9 Dielectric test . 22
7.9.1 General . 22
7.9.2 Objective . 22
7.9.3 Insulation impedance test . 23
7.9.4 Voltage withstand test . 23
7.9.5 Clearance and creepage tests . 24
7.10 Sealing Test . 25
7.10.1 General . 25
7.10.2 Objective . 25
7.10.3 Type tests (mandatory) . 26
7.10.4 Routine tests (voluntary test) . 26
Annex A (normative) List of tests . 27
Bibliography . 29
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European foreword
This document (EN 50702:2021) has been prepared by CLC/SC 9XB, “Electrical, electronic and
electromechanical material on board rolling stock, including associated software”.
The following dates are fixed:
— latest date by which this document has to be (dop) 2022-04-12
implemented at national level by publication of an
identical national standard or by endorsement
— latest date by which the national standards (dow) 2024-04-12
conflicting with this document have to be
withdrawn
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 mandate given to CENELEC by the European Commission and the
European Free Trade Association.
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Introduction
This document corresponds to the aim of the EN 50206 series.
The electrical power of a transmission unit is achieved by collecting current from a conductor rail by means of
one or more current collector(s), which is/are installed on the traction unit or on a vehicle of the trainset.
The collector shoes of the current collector which slide along the conductor rail facilitate the transmission of
electric power.
The current collector and the conductor rail form two oscillating sub-systems which can be displaced. There is
a unilateral sliding linkage between them, which ensures continuous contact. Their design should allow for
minimum wear of both sub-systems when in operation.
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1 Scope
This document specifies the tests for the current collectors to enable current collection from the third or fourth
rail system as well as associated fuses and short circuit devices. It also specifies the general assembly
characteristics to be applied to current collectors. This document is applicable to all types of vehicles with third
or fourth rail current collectors. This document does not apply to roof mounted pantographs.
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 50123-1:2003, Railway applications - Fixed installations - D.C. switchgear - Part 1: General
EN 50124-1:2017, Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and
creepage distances for all electrical and electronic equipment
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 50125-3:2003, Railway applications - Environmental conditions for equipment - Part 3: Equipment for
signalling and telecommunications
EN 50163:2004, Railway applications - Supply voltages of traction systems
EN 50215:2009, Railway applications - Rolling stock - Testing of rolling stock on completion of construction and
before entry into service
1
EN 60112:2003, Method for the determination of the proof and the comparative tracking indices of solid
insulating materials (IEC 60112:2003)
2
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN 60587:2007, Electrical insulating materials used under severe ambient conditions - Test methods for
evaluating resistance to tracking and erosion (IEC 60587:2007)
3
EN 61373:2010, Railway applications - Rolling stock equipment - Shock and vibration tests (IEC 61373:2010)
1
As impacted by EN 60112:2003/A1:2009.
2
As impacted by EN 60529:1991/A2:2013 and EN 60529:1991/COR1:2019.
3
As impacted by EN 61373:2010/AC:2017-09.
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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
current collector
equipment fitted to a vehicle and intended to collect current from a conductor rail
Note 1 to entry: Current collectors for conductor rail are also commonly known as shoegear.
[SOURCE: IEC 60050-811:2017, 811-32-01, modified — The term “contact wire or” has been omitted; Note 1
to entry has been added.]
3.2
collector shoe
part of the current collector making contact with the conductor rail
[SOURCE: IEC 60050-811:2017, 811-32-20, modified — The term “shoe gear” was replaced by “current
collector”.]
3.3
type test
conformity test made on one or more items representative of the production
[SOURCE: IEC 60050-151:2001, 151-16-16]
3.4
routine test
conformity test made on each individual item during or after manufacture
[SOURCE: IEC 60050-151:2001, 151-16-17]
3.5
gauge
cross-sectional dimensions defining the maximum permitted dimensions of vehicles or the minimum dimensions
of fixed structures
[SOURCE: IEC 60050-811:2017, 811-09-01, modified – The note 1 to entry has been omitted]
3.6
weak link
area of the collector shoe holder or collector shoe which is bound to break as a result of an impact with a foreign
body
Note 1 to entry: The weak link, as a frangible section, is calibrated to break when the energy to be absorbed in the
equipment exceeds the limit at which the frangible section is bound to be compromised.
3.7
retraction
function aimed to remove the collector shoe from the conductor rail, where the mechanism is positioned such
as to make sure no current will draw through the current collector and the whole circuitry is fully insulated from
the conductor rail
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3.8
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
3.9
retracted position
position where the collector shoe is retracted from the conductor rail by the means of a mechanism (pneumatic
or manual) system
3.10
contact force
force applied by the collector shoe on the conductor rail when the collector shoe is in the on rail
position
3.11
rated voltage
voltage value assigned by a manufacturer or other entity for a specified operating
condition of a component, device or equipment
[SOURCE: IEC 60050-614:2016, 614-03-09, modified — The notes 1, 2 and 3 to entry have been omitted.]
3.12
rated current at standstill
average value of the current withstand for a given time by the current collector at standstill
3.13
maximum current at standstill
maximum value of the current withstand by the current collector at standstill for a given time
3.14
rated current at running
continuous current transfer capacity of the current collector
3.15
short circuit current
maximum current that the current collector 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.
3.16
conductor rail
rigid metallic conductor mounted on insulators intended to interface with a vehicle mounted current collector
and placed alongside (third rail) or between the rails (fourth rail) of a railway track
Note 1 to entry: It is used typically in a mass transit or rapid transit system, which has alignments in its own corridors, fully
or almost fully segregated from the outside environment. Conductor rail systems are always supplied from direct current
electricity.
[SOURCE: IEC 60050-811:2017, 811-34-01, modified — “placed alongside (third rail) or between the rails
(fourth rail) of a railway track” has been added. Note 1 to entry has been changed. The Note 2 to entry has been
omitted.]
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3.17
load case
case according to which the load of a vehicle is defined
Note 1 to entry: The different cases are the following:
— AW0: weight of empty, ready-to-run vehicle,
— AW1: AW0 plus full seated load, including crew,
— AW2: AW1 plus standees at 4 passengers per m2,
— AW3: AW1 plus standees at 6 passengers per m2,
— AW4: AW1 plus standees at 8 passengers per m2.
Note 2 to entry: A weight of 75 kg per passenger is assumed.
4 Abbreviations
AC: Alternative Current
DC: Direct Current
GPS: Global Positioning System
IP: International Protection
UV: Ultra-Violet
5 Technical requirements
5.1 General
All general characteristics are given in the customer specifications. Unless otherwise specified, environmental
conditions are defined in EN 50125-1:2014. The category of environment shall be specified by the customer.
5.2 Gauge
The current collector in all positions shall be inside the specified gauge which is provided by the customer.
5.3 Working range of the current collector
The customer specification shall state the values for the working range (distance and angle).
5.4 Electrical values
The supply voltages of traction systems are specified in EN 50163:2004. The customer specifications shall also
state the duration and values of the exceptional voltages for the current collector operation. Values defined in
EN 50163:2004, 3.14 to 3.18 shall be given in the customer specifications.
5.5 Force requirements
Static contact forces measured during raising and lowering of the collector shoe shall lie within the boundaries
defined in the customer specification.
5.6 Collector shoe
The customer specification shall state the material of the collector shoe. Requirements for special collector shoe
shapes shall be specified by the customer.
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5.7 Operating system
The operating system shall be specified by the customer (pneumatic, hydraulic, electric and/or mechanical
actuated). The operation system shall be designed such that the collector shoe can be disconnected from the
conductor rail within 2 s for preventing electrical flashes.
5.8 Weak link
If required in the customer specification, a weak link shall allow a rupture of the collector shoe holder or collector
shoe in the event of a collision.
5.9 Current collector mass and force in the bogie
The supplier shall specify the mass of the current collector and the maximum force at every fixing point.
Additionally, the supplier shall specify all relevant parameters to enable the calculation of the maximum efforts
at every fixing point.
5.10 Protection against corrosion
The requirements for the corrosion protection application and the type of corrosion protection shall be given in
the customer specification.
6 Marking
As a minimum, the following shall be labelled on the current collector:
a) manufacturer's name
b) article number
c) serial number
d) revision or modification level
If requested by the customer:
1) Nominal Voltage
2) type of current collector
3) weight of current collector
4) nominal current
Taking into consideration operation in a railway environment, the name plate shall be readable after cleaning
and in built-in condition
7 Tests
7.1 Categories of tests
7.1.1 Overview
There are four categories of tests:
a) type tests
b) routine tests
c) investigation tests
d) combined tests
The tests, mentioned above, are described in 7.1.2 to 7.1.5. See also Annex A.
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7.1.2 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 customer specification.
7.1.3 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 customer and supplier, routine tests may be replaced by sampling tests: sampling rate shall
be agreed between supplier and customer.
7.1.4 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 customer specification. The acceptance
of the apparatus shall not rely on the results of these investigation tests.
7.1.5 Combined tests
Combined tests are special and supplementary tests which can 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 customer specification. These tests apply to both basic and
derived current collector models. Combined tests shall be subject to negotiation between supplier and customer.
7.2 General tests
7.2.1 Visual inspection (routine test)
This task is performed on a fully assembled series production product. To facilitate the inspection, the product
can be mounted representatively.
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 shall include all electrical and mechanical components. It shall be free from physical
defects and surface treated (see 5.10).
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 per the customer specification. It includes hazard labels.
7.2.2 Weight measurement (type test)
The current collector shall be completely assembled. The product is then put on a scale of the appropriate
accuracy. One % (range: 100 kg or more)
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Test acceptance criteria:
a) The measured mass shall be within the tolerance of the contractual mass stated on the main assembly
drawing.
b) The mass of the current collector shall comply with the contractual mass as specified in 5.9.
7.2.3 Dimensions (type test)
The dimensions of current collector (including tolerances), as specified on the drawings, shall be verified with
an appropriate measurement apparatus.
As a minimum, the following measurements shall be carried out:
a) Measurement of bolting points layout
b) measurement of outline dimensions of the product
The pneumatic interface shall be compliant with the bogie in case of a pneumatic supply of retraction
mechanism.
A special jig shall be designed which will meet the bogie interface whilst the current collector is checked out.
The pneumatic hoses route shall be smooth without excess bending while they are connected to the interface.
Test acceptance criteria:
The dimensions shall be within tolerances specified on the drawings.
7.2.4 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 Clause 6.
7.2.5 Test weak link (type test)
7.2.5.1 General
When the current collector features an arm with a weak link designed to
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