EN 50702:2021

Railway applications - Rolling stock - Conductor rail current collectors (shoegear): Characteristics and tests

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.

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

• Status: Published
• Publication Date: 06-May-2021
• ICS: 45.060.10 - Tractive stock
• Technical Committee: CLC/TC 9X - Electrical and electronic applications for railways
• Drafting Committee: CLC/SC 9XB - Electromechanical material on board rolling stock
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 07-May-2021
• Completion Date: 07-May-2021
• Mandate: M/486 - Mandate for programming and standardisation addressed to the European standardisation bodies in the field of urban rail
• Ref Project: SIST EN 50702:2021 - Railway applications - Rolling stock - Third rail current collectors (shoegear): Characteristics and tests

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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EN 50702:2021 (E)
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

EN 60112:2003, Method for the determination of the proof and the comparative tracking indices of solid

insulating materials (IEC 60112:2003)

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)

EN 61373:2010, Railway applications - Rolling stock equipment - Shock and vibration tests (IEC 61373:2010)

As impacted by EN 60112:2003/A1:2009.
As impacted by EN 60529:1991/A2:2013 and EN 60529:1991/COR1:2019.
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
...