IEC 62236-5:2008

IEC 62236-5
Edition 2.0 2008-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Electromagnetic compatibility –
Part 5: Emission and immunity of fixed power supply installations and
apparatus
Applications ferroviaires – Compatibilité électromagnétique –
Partie 5: Emission et immunité des installations fixes d'alimentation de
puissance et des équipements associés

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IEC 62236-5
Edition 2.0 2008-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Electromagnetic compatibility –
Part 5: Emission and immunity of fixed power supply installations and
apparatus
Applications ferroviaires – Compatibilité électromagnétique –
Partie 5: Emission et immunité des installations fixes d'alimentation de
puissance et des équipements associés

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 45.060 ISBN 978-2-88910-650-9
– 2 – 62236-5 © IEC:2008
CONTENTS
FOREWORD.3

INTRODUCTION.5

1 Scope .6

2 Normative references.7

3 Terms and definitions.7

4 Performance criteria.8

5 Emission tests and limits .8

5.1 Emission from the substation to the outside world .8
5.2 Emission test for apparatus operating at less than 1 000 V r.m.s. a.c. .9
5.3 Emission values within the boundary of the substation .9
6 Immunity tests and limits .9
7 Fixed power supplies on railway property which are not used for railway traction
purposes .10
Annex A (informative) Emission within the boundary of the substation for normal
operation and during the operation of switches .15
Bibliography.18

Figure 1 – Main categories of ports.8
Figure A.1 – Emission from switches – Peak.16
Figure A.2 – Emission within substation boundary – Peak.17

Table 1 – Immunity – Enclosure port.11
Table 2 – Immunity – Ports for signal lines and data buses not involved in process
control .12
Table 3 – Immunity – Ports for process, measurement and control lines, and long bus
and control lines .12
Table 4 – Immunity – DC input and d. c. output power ports .13
Table 5 – Immunity – AC input and a.c. output power ports.14
Table 6 – Immunity – Earth port .14

62236-5 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
RAILWAY APPLICATIONS –
ELECTROMAGNETIC COMPATIBILITY –

Part 5: Emission and immunity of fixed power supply

installations and apparatus
FOREWORD
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International Standard IEC 62236-5 has been prepared by IEC technical committee 9:
Electrical equipment and systems for railways.
This second edition cancels and replaces the first edition published in 2003. This edition
constitutes a technical revision and is based on EN 50121-5:2006.
The main changes with respect to the previous edition are listed below:
– requirements for the radiated immunity test of line 1.2 in Table 1;
– transformation of former Annex B into Bibliography;
– suppression of Annex C.
– 4 – 62236-5 © IEC:2008
The text of this standard is based on the following documents:

FDIS Report on voting
9/1189/FDIS 9/1217/RVD
Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts of IEC 62236 series, 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 publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
62236-5 © IEC:2008 – 5 –
INTRODUCTION
The requirements of this part of IEC 62236 have been specified so as to ensure a level of

electromagnetic emission which will cause minimal disturbance to other equipment. The

levels, however, do not cover the following cases:

a) where the probability of an occurrence likely to produce emissions in excess of those

which would normally be experienced is extremely low,

b) where highly susceptible apparatus will be used in close proximity of the equipment

covered by this standard, in which case further measures may have to be taken.

The emission limits given are on the basis that the equipment of the product family range is
installed in railway substation areas.

– 6 – 62236-5 © IEC:2008
RAILWAY APPLICATIONS –
ELECTROMAGNETIC COMPATIBILITY –

Part 5: Emission and immunity of fixed power supply

ins
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