IEC 62236-1:2018

IEC 62236-1 ®
Edition 3.0 2018-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Railway applications – Electromagnetic compatibility –
Part 1: General
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IEC 62236-1 ®
Edition 3.0 2018-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Railway applications – Electromagnetic compatibility –

Part 1: General
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100; 45.060.01 ISBN 978-2-8322-5391-5

– 2 – IEC 62236-1:2018 RLV © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 2
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 8
4 Performance criteria . 8
5 Management of EMC . 9
Annex A (informative) The railway system . 10
A.1 General . 10
A.2 General coupling mechanisms . 10
A.3 Principal electromagnetic phenomena for immunity . 11
A.3.1 Conducted low frequency phenomena . 11
A.3.2 Radiated low frequency field phenomena . 11
A.3.3 Conducted high frequency phenomena . 11
A.3.4 Radiated high frequency phenomena . 11
A.4 Principal electromagnetic phenomena for emission . 11
A.5 Description of the different electric traction systems . 11
A.6 Components of electric traction systems . 11
A.7 Internal sources of electromagnetic noise disturbance . 12
A.7.1 General . 12
A.7.2 Static Fixed elements . 12
A.7.3 Mobile elements . 12
A.7.4 Onboard auxiliary power converters . 13
A.7.5 Train line . 13
A.7.6 Traction return current with respect to track circuits . 13
A.7.7 Trackside equipment . 13
A.8 Summary of main characteristics of railways systems . 14
A.9 External sources of disturbance . 14
Bibliography . 15

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RAILWAY APPLICATIONS –
ELECTROMAGNETIC COMPATIBILITY –

Part 1: General
FOREWORD
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– 4 – IEC 62236-1:2018 RLV © IEC 2018
International Standard IEC 62236-1 has been prepared by IEC technical committee 9:
Electrical equipment and systems for railways.
This third edition cancels and replaces the second edition published in 2008. It constitutes a
technical revision and has been developed on the basis of EN 50121-1:2015.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Clarification in scope.
b) Introduction of subclause Abbreviated terms.
c) Management of EMC now based on IEC 61000 series as former reference is not adequate.
The text of this International Standard is based on the following documents:
FDIS Report on voting
9/2335/FDIS 9/2365/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62236, published under the general title Railway applications –
Electromagnetic compatibility, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.

INTRODUCTION
The railway system EMC set series of product-specific International Standards consists of five
parts described at the end of this introduction.
The set series of standards provides both a framework for managing the EMC for railways
systems and also specifies the limits for the electromagnetic (EM) emission of the railway
system as a whole to the outside world and for the EM emission and immunity for equipment
operating within the railway system. The latter must is intended to be compatible with the
emission limits set for the railway system as a whole and also provides for establishing
confidence in equipment being fit for purpose in the railway environment. There are different
stationary emission limits set for trams/trolleybuses and for metro/mainline railways systems.
The frequency covered by the standards is in the range from DC to 400 GHz. No
measurements need to be performed at frequencies where no requirement is specified. The
limits for EMC phenomena are set so that the railway system as a whole achieves
electromagnetic compatibility with the outside world, and between the various parts of the
railway system. Throughout the set series of standards, the immunity levels are chosen to
ensure a reasonable level of EMC with other apparatus within the local railway environment
and with emissions which enter the railway system from the outside world. Limits are also
placed on EM emission by railways systems into the outside world.
The compatibility between railway system emissions and their external environment is based
upon emission limits from the railways systems being set by considering the results from
measurements. Given that the general compatibility between railways systems and their
environment was satisfactory at the time these measurements were made and subsequent
experience of applying the limits has confirmed their acceptability, compliance with this
document has been judged to give satisfactory compatibility. The immunity and emission
levels do
...