IEC 62236-4:2018

IEC 62236-4 ®
Edition 3.0 2018-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Railway applications – Electromagnetic compatibility –
Part 4: Emission and immunity of the signalling and telecommunications
apparatus
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IEC 62236-4 ®
Edition 3.0 2018-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Railway applications – Electromagnetic compatibility –

Part 4: Emission and immunity of the signalling and telecommunications

apparatus
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100; 45.060.01 ISBN 978-2-8322-5407-3

– 2 – IEC 62236-4:2018 RLV  IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 2
1 Scope . 6
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 9
4 Description of location . 8
5 Emission limits for apparatus . 9
6 Immunity. 11
6.1 Performance criteria . 11
6.2 Test Immunity requirements . 11
Bibliography . 20

Figure 1 – Main categories of ports . 8

Table 1 – Emission – AC or DC power ports (input and output) . 10
Table 2 – Immunity – Enclosure port . 12
Table 3 – Immunity – I/O port . 16
Table 4 – Immunity – DC power ports . 17
Table 5 – Immunity – AC power ports . 18
Table 6 – Immunity – Earth port . 19

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RAILWAY APPLICATIONS –
ELECTROMAGNETIC COMPATIBILITY –

Part 4: Emission and immunity of the signalling
and telecommunications apparatus

FOREWORD
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– 4 – IEC 62236-4:2018 RLV  IEC 2018
International Standard IEC 62236-4 has been prepared by IEC technical committee TC 9:
Electrical equipment and systems for railways.
This third edition cancels and replaces the second edition, issued in 2008. It constitutes a
technical revision and has been developed on the basis of EN 50121-4:2015.
This edition includes the following significant technical changes with respect to the previous
edition:
a) clarification of scope (Clause 1);
b) new definition (Clause 3);
c) emission requirement extended in the frequency range 1 GHz to 6 GHz following
IEC 61000-6-4;
d) immunity requirement extended in the frequency range 5,1 GHz to 6 GHz.
This International Standard is to be read in conjunction with IEC 62236-1.
The text of this International Standard is based on the following documents:
FDIS Report on voting
9/2339/FDIS 9/2369/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 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 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
This part of IEC 62236 has been prepared in the form of a Product Standard.
It defines the immunity and emission test requirements for apparatus defined in the scope in
relation to the electromagnetic disturbances likely to be experienced in the railway. In
particular, the test requirements represent the essential electromagnetic immunity
requirements and have been selected to ensure an adequate level of immunity for apparatus
installed in on the railway locations.
Test requirements are specified for each port considered.
Safety considerations are not covered by this document.
In special specific situations, where the level of disturbances may exceed the levels
considered in this document, e.g. at a special location or where a hand-held transmitter is
used in very close proximity to an apparatus, special mitigation measures may have to be
necessary employed.
– 6 – IEC 62236-4:2018 RLV  IEC 2018
RAILWAY APPLICATIONS –
ELECTROMAGNETIC COMPATIBILITY –

Part 4: Emission and immunity of the signalling
and telecommunications apparatus

1 Scope
This part of IEC 62236 applies to signalling and telecommunication apparatus that is installed
inside the railway environment. Signalling and telecommunication apparatus mounted in
vehicles is covered by IEC 62236-3-2:2018, signalling and telecommunication apparatus
installed inside the substation and connected to substation equipment is covered by
IEC 62236-5:2018.
This document specifies limits for emission and immunity and provides performance criteria
for signalling and telecommunications (S&T) apparatus (including power supply systems
belonging to S&T) which may interfere with other apparatus inside the railway environment, or
increase the total emissions for the railway environment beyond the limits defined in the
appropriate standard and so risk causing Electromagnetic Interference (EMI) to apparatus
outside the railway system.
Apparatus which complies with the emission levels of IEC 61000-6-4 will meet the emission
requirements of this standard provided that emissions from any d.c. power port are within the
emissions limits specified for a.c. power ports. The immunity levels of IEC 61000-6-2 will also
be adequate except for the special case of apparatus as defined in Note 1 of Table 1. This
standard provides the immunity requirements for such apparatus.
The immunity levels given for the apparatus will in most cases allow the apparatus to perform
as intended in the railway environment (see Note). The immunity level establishes a common
reference for evaluating the performance of the apparatus when subject to interference
resulting from direct exposure of the apparatus an
...