EN 50153:2002

SLOVENSKI STANDARD
01-maj-2003
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SIST EN 50153:1998
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Railway applications - Rolling stock - Protective provisions relating to electrical hazards
Bahnanwendungen - Fahrzeuge - Schutzmaßnahmen in Bezug auf elektrische Gefahren
Applications ferroviaires - Matériel roulant - Mesures de protection vis-à-vis des dangers
d'origine électrique
Ta slovenski standard je istoveten z: EN 50153:2002
ICS:
13.260 9DUVWYRSUHGHOHNWULþQLP Protection against electric
XGDURP'HORSRGQDSHWRVWMR shock. Live working
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50153
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2002
ICS 45.060.00 Supersedes EN 50153:1996
English version
Railway applications -
Rolling stock -
Protective provisions relating to electrical hazards
Applications ferroviaires - Bahnanwendungen -
Matériel roulant - Fahrzeuge -
Mesures de protection vis-à-vis Schutzmaßnahmen in Bezug auf
des dangers d'origine électrique elektrische Gefahren
This European Standard was approved by CENELEC on 2002-05-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50153:2002 E
Foreword
This European Standard was prepared by SC 9XB, Electromechanical material on board of
rolling stock, of Technical Committee CENELEC TC 9X, Electrical and electronic
applications for railways.
This European Standard represents the second edition of the standard and is technically
based on the International Standard IEC 61991 which is the adaptation of EN 50153:1996
into IEC format. IEC 61991 was submitted successfully to a parallel vote in 1999. The
European references, special national conditions and A-deviations have been restored in this
European Standard.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved
by CENELEC as EN 50153 on 2002-05-01.
This European Standard supersedes EN 50153:1996.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-05-01
Annexes designated “normative” are part of the body of the standard.
Annexes designated “informative” are given for information only.
In this standard, annexes A and B are normative and annex C is informative.
__________
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Table of contents
Page
Introduction . 4
1 Scope . 4
2 Normative references. 4
3 Definitions. 5
3.1 Definitions concerning persons. 5
3.2 Other definitions . 6
4 Classification of voltage bands . 8
4.1 General principles . 8
4.2 Connections between circuits . 8
4.3 Exceptions. 9
5 Protective provisions against direct contact. 9
5.1 Protection by insulation . 9
5.2 Protection by prevention of access . 9
5.3 Protection by the use of band I . 12
5.4 Warning labels. 13
6 Protective provisions against indirect contact. 13
6.1 General principles . 13
6.2 Protective bonding . 13
6.3 Disconnection of the supply. 14
6.4 Vehicle protective bonding. 14
6.5 Clarifications and exceptions . 15
7 Power circuits . 16
7.1 General principles . 16
7.2 Power circuit insulated from the vehicle body or bogie. 17
7.3 Power circuit using the vehicle body or bogie . 17
8 Additional requirements . 17
8.1 Current collectors. 17
8.2 Capacitors . 18
8.3 Plug and socket devices. 18
8.4 Special sources . 19
Annex A (normative) Special national conditions. 20
Annex B (normative) List of items where contracting parties
shall choose either a procedure or a mechanical device. 21
Annex C (informative) A-deviations. 22

Introduction
It is generally accepted that safety depends on human factors, based on the normal
behaviour of the operators involved, as well as upon technical factors.
For these reasons, this European Standard, in several instances, leaves a choice to the
contracting parties between two alternatives. These alternatives consist either in the
provision of operating rules, regulations and procedures, or in the application of technical
measures such as mechanical or electrical interlocking devices.
A list of the cases for which the contracting parties (e.g. user and manufacturer) should
reach agreement before signing the contract is included in annex B.
1 Scope
This European Standard offers a set of rules that are applied in the design and manufacture
of electrical installations and equipment to be used on rolling stock so as to protect the
persons from electric shocks.
The methods used to satisfy the rules may differ, in accordance with the procedures and
practices of the operating organization.
This European Standard is applicable to vehicles of rail transport systems, road vehicles
powered by an external supply (e.g. trolley buses), magnetic levitated vehicles and to the
electrical equipment installed in these vehicles.
This European Standard does not apply to
− mine railways in underground mines,
− crane installations, moving platforms and similar transport systems on rails,
− funicular railways,
− temporary constructions.
Testing of vehicles against the requirements of this European Standard is not included. For
this, refer to EN 50215.
2 Normative references
This European Standard incorporates, by dated or undated references, provisions from other
publications. These normative references are cited at the appropriate place in the text and
the publications are listed hereafter. For dated references, subsequent amendments to or
revisions of any of these publications apply to this European Standard only when
incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 50122-1 1997 Railway applications - Fixed installations
Part 1: Protective provisions relating to electrical safety and
earthing
EN 50124-1 2001 Railway applications - Insulation coordination
Part 1: Basic requirements - Clearances and creepage
distances for all electrical and electronic equipment
EN 50126 1999 Railway applications - The specification and demonstration of
Reliability, Availability, Maintainability and Safety (RAMS)

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EN 50163 1995 Railway applications - Supply voltages of traction systems
EN 50215 1999 Railway applications - Testing of rolling stock after completion
of construction and before entry into service
EN 60439 Series Low-voltage switchgear and controlgear assemblies
(IEC 60439 series, modified)
EN 60529 1991 Degrees of protection provided by enclosures (IP code)
+ corr. May 1993 (IEC 60529:1989)
EN 61310-1 1995 Safety of machinery - Indication, marking and actuation
Part 1: Requirements for visual, auditory and tactile signals
(IEC 61310-1:1995)
HD 366 S1 1977 Classification of electrical and electronic equipment with regard
to protection against electric shock
(IEC 60536: 1976)
HD 384 Series Electrical installations of buildings
(IEC 60364 series, modified)
HD 384.4.41 S2 1996 Electrical installations of buildings
Part 4: Protection for safety
Chapter 41: Protection against electric shock
(IEC 60364-4-41:1992, modified)
IEC 60050-191 1990 International Electrotechnical Vocabulary (IEV)
Chapter 191: Dependability and quality of service
IEC 60050-441 1984 Chapter 441: Switchgear, controlgear and fuses
IEC 60050-811 1991 Chapter 811: Electric traction
IEC 60050-826 1982 Electrical installations of buildings (harmonized as HD 384.2)
IEC 60479-1 1994 Effects of current on human beings and livestock
Part 1: General aspects
3 Definitions
For the purpose of this European Standard, the following definitions apply. For more
information relating to definitions of parts of the fixed installations, refer to
EN 50122-1 from which these definitions are derived.
NOTE  In order to avoid risks of misunderstanding, definitions used in the text are written in italics.
3.1 Definitions concerning persons
3.1.1
skilled person
a person who can judge the work assigned to him and recognize possible dangers on the
basis of his professional training, knowledge and experience and of his knowledge of the
relevant requirements [IEV 826-09-01]

3.1.2
instructed person
a person adequately advised or supervised by skilled persons to enable him or her to avoid
dangers and to prevent risks which electricity may create [IEV 826-09-02]
3.1.3
ordinary person
a person who is neither a skilled person nor an instructed person [IEV 826-09-03]
3.2 Other definitions
3.2.1
closed electrical operating area
any room or location which serves exclusively for the operation of electrical equipment and is
kept secure by a means appropriate to the voltage and location
NOTE 1  Access to such areas is permitted only to skilled persons and instructed persons.
NOTE 2  The definition of closed electrical operating area can be suitable for underfloor or upperroof cabinets.
Generally speaking, it is any location (inside or outside the car body) which is kept secured because of the
voltage that can assume the equipment inside it. Access to such areas is not allowed to ordinary persons.
3.2.2
contact line
conductor system for supplying electrical energy to vehicles through current-collecting
equipment [IEV 811-33-01]
3.2.3
contact wire
electric conductor of an overhead contact line with which the current collectors make contact
[IEV 811-33-15]
3.2.4
direct contact
contact of persons or livestock with live parts [IEV 826-03-05]
3.2.5
earth
conductive mass of the earth, whose electrical potential at any point is conventionally taken
as equal to zero [IEV 826-04-01]
3.2.6
electrical operating area
any room or location which serves primarily for the operation of electrical equipment and is
normally entered only by skilled persons or instructed persons
NOTE  Generally speaking, an electrical operating area is any location (mainly inside the car body) where
electrical equipments operate. The above is the main function of this area but not the only one. In fact, normally
the area is not kept secured and the protection against direct contact is achieved by other means (e.g.
obstacles).
3.2.7
electric shock
dangerous physiological effect resulting from the passing of an electric current through a
human or animal body [IEV 826-03-04, mod.]

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3.2.8
exposed conductive part
any metallic or other form of conductive material which is not energized ex
...