IEC 62236-3-2:2008

IEC 62236-3-2
Edition 2.0 2008-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Electromagnetic compatibility –
Part 3-2: Rolling stock – Apparatus

Applications ferroviaires – Compatibilité électromagnétique –
Partie 3-2: Matériel roulant – Appareils

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IEC 62236-3-2
Edition 2.0 2008-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Railway applications – Electromagnetic compatibility –
Part 3-2: Rolling stock – Apparatus

Applications ferroviaires – Compatibilité électromagnétique –
Partie 3-2: Matériel roulant – Appareils

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
S
CODE PRIX
ICS 45.060 ISBN 978-2-88910-648-6
– 2 – 62236-3-2 © IEC:2008
CONTENTS
FOREWORD.3

1 Scope.5

2 Normative references .5

3 Terms and definitions .6

4 Performance criteria .7

5 Conditions during testing .7

6 Applicability.7

7 Emission tests and limits .8
8 Immunity tests and limits .12
Annex A (informative) Examples of apparatus and ports .16
Annex B (informative) Conducted disturbances generated by power converters in the
range of 9 kHz to 30 MHz .21

Figure 1 – Main categories of ports.7
Figure A.1 – AC fed locomotive with a.c. traction drive and psophometric filter on the
line side.18
Figure A.2 – AC/AC system with power factor correction filter on the converter side and
with d.c. or three-phase auxiliary and train power supply .19
Figure A.3 – Conventional system with a.c. input and d.c. traction motors fed by phase
control converter.19
Figure A.4 – DC fed system with a.c. traction drive .20
Figure A.5 – Additional ports of converter and control electronics .20
Figure B.1 – Test set-up .22

Table 1 – Emission – Traction a.c. power ports.9
Table 2 – Emission – Traction d.c. power ports.9
Table 3 – Emission – Auxiliary a.c. or d.c. power ports .10
Table 4 – Emission – Battery referenced ports.10
Table 5 – Emission – Process measurement and control ports.11
Table 6 – Emission – Enclosure port.11

Table 7 – Immunity – Battery referenced ports (except at the output of energy
sources), auxiliary a.c. power input ports (rated voltage ≤ 400 V ).13
r.m.s.
Table 8 – Immunity – Signal and communication, process measurement and control
ports .14
Table 9 – Immunity – Enclosure ports .15
Table A.1 – Typical examples of apparatus.16
Table A.2 – Typical port descriptions .17

62236-3-2 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
RAILWAY APPLICATIONS –
ELECTROMAGNETIC COMPATIBILITY –

Part 3-2: Rolling stock –
Apparatus
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62236-3-2 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. It constitutes a
technical revision and is based on EN 50121-3-2:2006.
The main changes with respect to the previous edition are listed below:
– requirements for the surge immunity test of line 7.2 in Table 7;
– requirements for the radiated immunity test of line 9.2 in Table 9.

– 4 – 62236-3-2 © IEC:2008
The text of this standard is based on the following documents:

FDIS Report on voting
9/1187/FDIS 9/1215/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.
62236-3-2 © IEC:2008 – 5 –
RAILWAY APPLICATIONS –
ELECTROMAGNETIC COMPATIBILITY –

Part 3-2: Rolling stock –
Apparatus
1 Scope
This part of IEC 62236 applies to emission and immunity aspects of EMC for electrical and
electronic apparatus intended for use on railway rolling stock. IEC 62236-3-2 applies for the
integration of apparatus on rolling stock.
The frequency range considered is from d.c. to 400 GHz. No measurements need to be
performed at frequencies where no requirement is specified.
The application of tests shall depend on the particular apparatus, its configuration, its ports,
its technology and its operating conditions.
This standard takes into account the internal environment of the railway rolling stock and the
external environment of the railway, and interference to the apparatus from equipment such
as hand-held radio transmitters.
If a port is intended to transmit or receive for the purpose of radio communication (intentional
radiators, e.g. transponder systems), then the emission and immunity limits in this standard at
the communication frequency do not apply.
This standard does not apply to transient emissions when starting or stopping the apparatus.
The objective of this standard is to define limits and test methods for electromagnetic
emissions and immunity test requirements in relation to conducted and radiated disturbances.
Emission requirements have been selected so as to ensure that disturbances generated by
the apparatus operated normally on railway rolling stock do not exceed a level which could
prevent other apparatus from operating as intended.
Likewise, the immunity requirements have been selected so as to ensure an adequate level of
immunity for rolling stock apparatus.

The levels do not however cover extreme cases which may occur with an extremely low
probability of occurrence in any location. Specific requirements which deviate from this
standard shall be specified.
Test requirements are specified for each port considered.
These specific provisions are to be used in conjunction with the general provisions in
IEC 62236-1.
2 Normative references
The following referenced documents are indispensable for the application 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.

– 6 – 62236-3-2 © IEC:2008
IEC 61000-4-2, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement

techniques – Electrostatic discharge immunity test

IEC 61000-4-3, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement

techniques – Radiated, radio-frequency, electromagnetic field immunity test

IEC 61000-4-4, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement

techniques – Electrical fast transient/burst immunity test

IEC 61000-4-5, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement

techniques – Surge immunity test

IEC 61000-4-6, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement
techniques – Immunity to conducted disturbances, induced by radio-frequency fields
IEC 61000-6-1, Electromagnetic compatibility (EMC) – Part 6-1: Generic standards –
Immunity for residential, commercial and light-industrial environments
IEC 62236-1, Railway applications – Electromagnetic compatibility – Part 1: General
IEC 62236-3-1, Railway applications – Electromagnetic compatibility – Part 3-1: Rolling stock
– Train and complete vehicle
CISPR 11, Industrial, scientific and medical (ISM) radio-frequency equipment –
Electromagnetic disturbance characteristics – Limits and methods of measurement
CISPR 16 (all parts), Specification for radio disturbance and immunity measuring apparatus
and methods
CISPR 22, Information technology equipment – Radio disturbance characteristics – Limits and
methods of measurement
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply:
3.1
rolling stock apparatus
finished product with an intrinsic function intended for implementation into the rolling stock
installation
3.2
port
the particular interface of the specified apparatus with the external environment, for example
a.c. power port, d.c. power port, I/O (input/output) port
3.3
enclosure port
the physical boundary of the apparatus through which electromagnetic fields may radiate or
impinge
The main categories of ports for rolling stock apparatus are presented in Figure 1.

62236-3-2 © IEC:2008 – 7 –
Enclosure port
Traction a.c. or d.c.
power port Earth port
Signal and communication
Auxiliary a.c. or d.c.
port
power port ROLLING STOCK
APPARATUS
Process measurement and
control port
Battery referenced port
IEC 2180/08
Figure 1 – Main categories of ports
Typical examples of rolling stock apparatus with their ports are listed in Annex A.
4 Performance criteria
The variety and the diversity of the apparatus within the scope of this standard make it
difficult to define precise criteria for the evaluation of the immunity test results.
A functional description and a definition of performance criteria, during or as a consequence
of the EMC testing, shall be provided by the manufacturer and noted in the test report, based
on the criteria A, B, C defined in IEC 62236-1.
5 Conditions during testing
It is not always possible to test every function of the apparatus. The tests shall be made at a
typical operating mode considered by the manufacturer to produce the largest emission or
maximum susceptibility to noise as appropriate in the frequency band being investigated
consistent with normal applications. The manufacturer shall define the conditions during
testing in a test plan.
If the apparatus is part of a system, or can be connected to auxiliary apparatus, then the
apparatus shall be tested while connected to the minimum configuration of auxiliary apparatus
necessary to exercise the ports in accordance with CISPR 22.
The configuration and mode of operation shall be specified in the test plan and the actual
conditions, during the tests, shall be precisely noted in the test report.
If the apparatus has a large number of similar ports or ports with many similar connections,

then a sufficient number shall be selected to simulate actual operating conditions and to
ensure that all the different types of termination are covered (e.g. 20 % of the ports or at least
four ports).
The tests shall be carried out within the specified operating range for the apparatus and at its
rated supply voltage, unless otherwise indicated in the basic standard.
6 Applicability
The measurements in this standard shall be made on the relevant ports of the apparatus.
It may be determined from consideration of the electrical characteristics, the connection and
the usage of a particular apparatus that some of the tests are not applicable (e.g. radiated
immunity of induction motors, transformers). In such cases, the decision not to test has to be
recorded in the test plan or test report.

– 8 – 62236-3-2 © IEC:2008
If not otherwise specified, the EMC tests shall be type tests.

7 Emission tests and limits
The emission tests and limits for apparatus covered by this standard are given on a port by

port basis.
Measurements shall be performed in well-defined and reproducible conditions for each type of

disturbance.
The description of the test, the test methods and the test set-up are given in Basic Standards
which are referred to in Tables 1 to 6.
The contents of these basic standards are not repeated here, however modifications or
additional information needed for the practical application of the tests are given in this
standard.
NOTE The reference to “basic standard“ is intended to be limited to those parts of the standard that give the
description of the test, the test methods and the test set-up.

62236-3-2 © IEC:2008 – 9 –
Table 1 – Emission – Traction a.c. power ports
Test Basic
Port Test set-up Remarks
specification standard
1.1 High voltage Signalling and see IEC 62236-3-1
connection, input side telecommunication
before filter frequencies
(port 3 on Figures A.1,
9 kHz - 30 MHz No limits  See Notes 1 and 2
A.2 and A.3)
NOTE 1 No conducted radio frequency limits are applied. The apparatus when installed with other surrounding equipment should satisfy the radiated emission limits of
IEC 62236-3-1 for trains.
NOTE 2 It is desirable but not possible to apply conducted radio frequency limits. No practical test method exists and the relationship between conducted emissions and radiated
emissions is not possible to define.

Table 2 – Emission – Traction d.c. power ports
Test Basic
Port Test set-up Remarks
specification standard
2.1 High voltage Signalling and see IEC 62236-3-1
connection, input side telecommunication
before filter
frequencies
(port 3 on Figure A.4)
9 kHz - 30 MHz No limits  See Notes 1 and 2
NOTE 1 No conducted radio frequency limits are applied. The apparatus when installed with other surrounding equipment should satisfy the radiated emission limits of
IEC 62236-3-1 for trains.
NOTE 2 At present, there is no agreed method or limit for conducted emissions on the traction supply from 9 kHz to 30 MHz. Limiting conducted emissions from an apparatus
connected to the traction supply will prevent excessive radiated emissions from the supply system. A method for measuring conducted emissions is proposed in Annex B.
Experience in this technique and the relationship between conducted and radiated emissions are necessary in order to make this standard progress in the future.

– 10 –              62236-3-2 © IEC:2008

Table 3 – Emission – Auxiliary a.c. or d.c. power ports
Test Basic
Port Test set-up Remarks
specification standard
3.1 Auxiliary supply 9 kHz - 150 kHz No limits CISPR 11 CISPR 11 See Notes 1 and 2
sinusoidal a.c. or d.c.
150 kHz - 500 kHz 99 dBμV quasi-peak See Notes 3, 4 and 5
(port 9 on Figures A.1,
A.2 and A.4)
500 kHz - 30 MHz See Notes 3, 4 and 5
93 dBμV quasi-peak
NOTE 1 At present, there are no limits for conducted emissions from 9 kHz to 150 kHz. Limiting conducted emissions from an apparatus will prevent excessive radiated
emissions. Experience in this technique and the relationship between conducted and radiated emissions are necessary in order to make this standard progress in the future.
NOTE 2 230 V AC power outlet ports for public use should offer a power quality, which is sufficient for the use of intended equipment like PC and mobile telephone chargers.
The total harmonic distortion should be limited by a sine-filter to ≤ 8 %. The burst and surge emissions of the outlet should be limited to the levels of residential equipment
according to IEC 61000-6-1. AM radio receivers are not intended to be supplied by these power outlets.
NOTE 3 Wherever applicable the method defined by CISPR 11 is to be used. At present, the existing method of measuring conducted emissions (CISPR 11) has limitations in
terms of voltage and current rating of coupling networks. In addition, the method of measuring voltage has safety implications for testing high power systems. Limiting conducted
emissions from apparatus connected to external cable systems will prevent excessive radiated emissions.
NOTE 4 This requirement refers to the industrial limit values but considering they have been defined to protect radio and TV sets and as the objective is not the same here, the
applicable limit for railway applications has been relaxed by 20 dB to be more representative of potential problems.
NOTE 5 This requirement is not applicable to power ports which are connected to other dedicated, compatible ports.

Table 4 – Emission – Battery referenced ports
Test Basic
Port Test set-up Remarks
specification standard
4.1 Battery power supply 9 kHz - 150 kHz No limits CISPR 11 CISPR 11 See Note 1
(port 10 on Figures A.1 to
150 kHz - 500 kHz See Note 2
99 dBμV quasi-peak
A.5)
500 kHz - 30 MHz See Note 2
93 dBμV quasi-peak
NOTE 1 At present, there are no limits for conducted emissions from 9 kHz to 150 kHz. Limiting conducted emissions from an apparatus will prevent excessive radiated
emissions. Experience in this technique and the relationship between conducted and radiated emissions is necessary in order to make this standard progress in the future.
NOTE 2 This requirement refers to the industrial limit values but considering they have been defined to protect radio and TV sets and as the objective is not the same here, the
applicable limit for railway applications has been relaxed by 20 dB to be more representative of potential problems.

62236-3-2 © IEC:2008 – 11 –
Table 5 – Emission – Process measurement and control ports
Test Basic
Port Test set-up Remarks
specification standard
5.1 Electronic supply 9 kHz - 150 kHz No limits CISPR 11 CISPR 11 See Note 1
sinusoidal a.c. or d.c.
150 kHz - 500 kHz 99 dBμV quasi-peak See Note 2
(port 16 on Figure A.5)
500 kHz - 30 MHz See Note 2
93 dBμV quasi-peak
NOTE 1 At present, there are no limits for conducted emissions from 9 kHz to 150 kHz. Limiting conducted emissions from an apparatus will prevent excessive radiated
emissions. Experience in this technique and the relationship between conducted and radiated emissions is necessary in order to make this standard progress in the future.
NOTE 2 This requirement refers to the industrial limit values but considering they have been defined to protect radio and TV sets and as the objective is not the same here, the
applicable limit for railway applications has been relaxed by 20 dB to be more representative of potential problems.

Table 6 – Emission – Enclosure port
Test Basic
Port Test set-up Remarks
specification standard
6.1 Enclosure CISPR 11 CISPR 11 See Notes 1 and 2
30 MHz - 230 MHz 40 dBμV/m quasi-peak
230 MHz - 1 GHz See Notes 1 and 2
47 dBμV/m quasi-peak
NOTE 1 The measurement distance is 10 m. A measurement distance of 3 m may be used with the limit increased by 10 dB.
NOTE 2 Traction converters and auxiliary converters over 50 kVA need not be tested individually but when the vehicle is tested as a whole in accordance with IEC 62236-3-1.

– 12 – 62236-3-2 © IEC:2008
8 Immunity tests and limits
The immunity tests and limits for apparatus covered by this standard are given on a port by

port basis.
To ensure the immunity of the complete vehicle, the limits shall be applicable to all relevant

apparatus.
Tests shall be conducted in a well-defined and reproducible manner.

The tests shall be carried out as single tests in sequence. The sequence of testing is optional.
The description of the test, the test generator, the test methods and the test set-up are given
in basic standards which are referred to in Tables 7 to 9.
The contents of these “basic standards“ are not repeated here, however modifications or
additional information needed for the practical application of the tests are given in this
standard.
62236-3-2 © IEC:2008 – 13 –
Table 7 – Immunity – Battery referenced ports (except at the output of energy sources),
auxiliary a.c. power input ports (rated voltage ≤ 400 V )
r.m.s.
Environmental Test
Basic standard Test set-up Remarks Performance criteria
phenomena specification
7.1 Radio-frequency 0,15 MHz - 80 MHz IEC 61000-4-6 IEC 61000-4-6 See Note 1
common mode
10 V (r.m.s.) Unmodulated carrier The test level specified is
A
the r.m.s. value of the
80 % AM, 1 kHz
unmodulated carrier
7.2 Fast transients Peak IEC 61000-4-4 IEC 61000-4-4 See Note 2
± 2 kV
T / T A
5/50 ns r h
Repetition frequency
5 kHz
7.3 Surges IEC 61000-4-5 IEC 61000-4-5 See Note 3
1,2 / 50 μs
Open circuit test voltage,
± 2 kV 42 Ω, 0,5 μF
line to ground
B
Open circuit test voltage,
± 1 kV 42 Ω, 0,5 μF
line to line
NOTE 1 The test level can also be defined as the equivalent current into a 150 Ω load.
NOTE 2 Direct coupling, positive and negative polarity.
NOTE 3 This test is intended to replicate the phenomenon known as direct coupling; hence an output impedance of 42 Ω (40 Ω and 2 Ω generator) and a coupling capacitance of
0,5 μF is recommended.
– 14 –             62236-3-2 © IEC:2008

Table 8 – Immunity – Signal and communication, process measurement and control ports
Environmental Test
Basic standard Test set-up Remarks Performance criteria
phenomena specification
8.1 Radio-frequency 0,15 MHz - 80 MHz IEC 61000-4-6 IEC 61000-4-6 See Note 1
common mode
10 V (r.m.s.) Unmodulated carrier The test level specified is
A
the r.m.s. value of the
80 % AM, 1 kHz
unmodulated carrier
8.2 Fast transients Peak IEC 61000-4-4 IEC 61000-4-4 See Note 2
± 2 kV
T / T Capacitive clamp used
5/50 ns A
r h
5 kHz
Repetition frequency
NOTE 1 The test level can also be defined as the equivalent current into a 150 Ω load.
NOTE 2 Capacitive coupling, positive and negative polarity.

62236-3-2 © IEC:2008 – 15 –
Table 9 – Immunity – Enclosure ports
Environmental Test
Basic standard Test set-up Remarks Performance criteria
phenomena specification
9.1 Radio-frequency 80 MHz - 1 000 MHz See Notes 1 and 2
electromagnetic field.
20 V/m (r.m.s.) Unmodulated carrier The test level specified is
A
IEC 61000-4-3 IEC 61000-4-3
Amplitude modulated
the r.m.s. value of the
80 % AM, 1 kHz
unmodulated carrier
9.2 Radio-frequency 800 MHz - 1 000 MHz
electromagnetic field,
20 V/m (r.m.s.) Unmodulated carrier
from digital mobile
telephones
80 % AM, 1 kHz
See Notes 2, 3 and 4
1 400 MHz - 2 100 MHz
The test level specified is
IEC 61000-4-3 IEC 61000-4-3 A
10 V/m (r.m.s.) Unmodulated carrier
the r.m.s. value of the
80 % AM, 1 kHz
unmodulated carrier
2 100 MHz - 2 500 MHz
5 V/m (r.m.s.) Unmodulated carrier
80 % AM, 1 kHz
9.3 Electrostatic discharge Contact discharge
± 6 kV
IEC 61000-4-2 IEC 61000-4-2 See Note 5 B
Air discharge
± 8 kV
NOTE 1 This limit applies to equipment mounted in the passenger compartments, drivers cab or external to the rolling stock (roof, underframe). For equipment mounted in all other
areas, a severity level of 10 V/m may be used.
NOTE 2 For large apparatus (e.g. traction drives, auxiliary converters) it is often not practical to perform the immunity test to radiated electromagnetic fields on the complete unit. In
such cases the manufacturer should test susceptible sub-systems (e.g. control electronics). The test report should justify the selection or not of sub-systems and any assumptions
made (e.g. reduction of field due to case shielding).
NOTE 3 The test in 5.2 of IEC 61000-4-3 should be applied at the digital radio telephone frequencies in use in the countries in which the equipment is intended to be operated.
NOTE 4 The immunity test levels may be reduced for equipment mounted in areas where the threat from mobile digital radio telephones has been demonstrated to be less severe.
NOTE 5 Only applicable to equipment accessible to passengers and operational staff (not maintenance).

– 16 – 62236-3-2 © IEC:2008
Annex A
(informative)
Examples of apparatus and ports

The purpose of this annex is to provide examples of the different types of rolling stock

apparatus together with their ports. Examples of apparatus which may be placed on the

market as a single commercial unit are given in Table A.1. However, these items of apparatus
may also form a sub-system in a larger apparatus (e.g. control electronics in an auxiliary
converter). In this case, the requirements of the standard apply only to the apparatus which is

placed on the market. A port is defined in the standard as the interface of an apparatus with
the external environment. The matrix in the table indicates whether the particular apparatus is
relevant to emission, immunity or neither. This guidance is offered for the benefit of users of
this standard, but it is not intended to be definitive. It is for the user of the standard to make
the necessary technical judgements in determining whether or not a test is applicable.
The drawings of the following figures clarify the most essential ports. They show examples of
different arrangements.
Figure A.1 applies for an a.c. fed locomotive with a.c. traction drive and psophometric filter on
the line side.
Figure A.2 shows another a.c./a.c. system with power factor correction filter on the converter
side and with d.c. or three-phase auxiliary and train power supply.
Figure A.3 shows a more conventional system with a.c. input and d.c. traction motors fed by
phase control converter.
Figure A.4 is a d.c. fed system with a.c. traction drive.
Figure A.5 shows some additional ports of converter and control electronics.
Of course, many other different system arrangements are possible.
Table A.1 – Typical examples of apparatus
Apparatus Test requirements
Traction converter Emission and immunity
Main circuit breaker No test requirements

Traction transformers No test requirements
Traction motor No test requirements
Auxiliary motor No test requirements
DC auxiliary supply (battery) Emission and immunity
Electronic control supply Emission and immunity
Signalling and communication Emission and immunity
equipment
Electronic man-machine interface Emission and immunity
Environmental conditioning equipment Emission and immunity
Passenger information equipment Emission and immunity
Door control Emission and immunity
Auxiliary equipment for train operation Emission and immunity
Auxiliary equipment for passenger Emission and immunity
services
Train management systems Emission and immunity

62236-3-2 © IEC:2008 – 17 –
Apparatus Test requirements
Electronic power supply Emission and immunity

Braking control system Emission and immunity

In Tables 1 to 9, tests are specified for application to a specific port (interface of an

apparatus). Table A.2 lists some more typical descriptions used for these ports and the type

of apparatus which may have such a port. Examples of these ports are given in the

accompanying figures except for ports 11, 13 and 14.

Table A.2 – Typical port descriptions
Port No
Typical port name Typical apparatus
on figures
Traction a.c. power ports
1 Pantograph line terminal Main circuit breaker
3 High voltage connection (before filter) Filter
4 Connection filter-transformer, HV side Filter
5 Train power line single phase Auxiliary converter
6 Connection transformer-converter Propulsion converter
7 Traction motor cables Traction motors
8 Auxiliary feed windings of transformer DC auxiliary supply
Traction d.c. power ports
DC conductor input Main circuit breaker
High voltage connection (before filter) Filter
Connection filter-converter Propulsion converter
Traction motor cables Traction motors
Auxiliary a.c. ports
Auxiliary a.c. supply Environmental conditioning equipment
Auxiliary d.c. ports
Auxiliary d.c. supply
Battery referenced ports
Battery power supply Electronic power supply
Train control bus (conventional battery voltage) Train management system
Relay logic input/output Electronic control system
Signal and communication ports
Databus within vehicle Electronic control system
Databus within train Train management system
Passenger entertainment network Passenger entertainment equipment
Firing control line Electronic control system
Sensor/transducer signal (digital or analog) Electronic control system
17, 18
Communication interface (maintenance) Electronic control system
Process measurement and control ports
Internal electronic supply Electronic control system
Sensor/transducer signal (analog) Electronic control system
Enclosure port
– 18 – 62236-3-2 © IEC:2008
Port No
Typical port name Typical apparatus
on figures
Equipment enclosure All apparatus
Earth port
Earth connection All apparatus
AC
Transformer
Traction
Converter
4 6
Motor
M
Filter 3
Auxiliary Battery
converter charger
Train supply
IEC 2181/08
Figure A.1 – AC fed locomotive with a.c. traction drive
and psophometric filter on the line side

62236-3-2 © IEC:2008 – 19 –
AC
Converter
Traction
M
Auxiliary motor
Train
supply
or
Auxiliary
converter 3
or
Transformer
Battery
charger
IEC 2182/08
Figure A.2 – AC/AC system with power factor correction filter on the converter side
and with d.c. or three-phase auxiliary and train power supply
AC
Traction
Converter
DC motor
Switch-gear
Transformer
Auxiliary supply
Battery charger
Train supply 5
IEC 2183/08
Figure A.3 – Conventional system with a.c. input and d.c. traction motors
fed by phase control converter

– 20 – 62236-3-2 © IEC:2008
DC
Train supply
Traction
Converter
Motor
Filter
M
3 9
Auxiliary Battery
converter charger
IEC 2184/08
Figure A.4 – DC fed system with a.c. traction drive

Train-track
communication
Antenna coil
Traction converter
Traction
motor
Power input
Current
I
I
sensor
Gate
unit
Rotary
speed 22
sensor
GU
supply
17 18 16 15 10 22
Light
guide
Grounding
or 15
Control
electronics
Control
panel
Service port
IEC 2185/08
Figure A.5 – Additional ports of converter and control electronics

62236-3-2 © IEC:2008 – 21 –
Annex B
(informative)
Conducted disturbances generated by power converters

in the range of 9 kHz to 30 MHz

B.1 General
This procedure concerns switched mode power conversion devices connected to the main

traction d.c. port (catenary or conductor rail) with or without a main line filter.
B.2 Measuring method
The measurements should be carried out using the CISPR 16 series. The following
adjustments should be set:
– 200 Hz on 6 dB bandwidth, in the range 9 kHz to 150 kHz;
– 9 kHz on 6 dB bandwidth, in the range 150 kHz to 30 MHz;
– quasi-peak detection with appropriate weighting for each frequency range.
Care should be taken of possible saturation caused by the main current which may affect the
probe transfer characteristics. Correct impedance matching should be ensured from the probe
to the measuring apparatus.
B.3 Test procedure
The organisation of the test is presented in Figure B.1 with appropriate recommendations.
The common mode impedance and grounding conditions should be as close as possible to
the actual conditions on both input and output of the converter.
The levels should be measured for each measuring point and for each working condition
recognised as providing the maximum disturbing currents.
B.4 Limits
No conducted radio frequency limits are applied. The apparatus when installed with other
surrounding equipment must satisfy the radiated emission limits of IEC 62236-3-1 for trains.
This test is offered to quantify the emission of apparatus, for example for data sheets.

– 22 – 62236-3-2 © IEC:2008
CISPR 16
measuring
apparatus
Current
probe
Input
Power converter
Load
IEC 2186/08
Figure B.1 – Test set-up
___________
– 24 – 62236-3-2 © CEI:2008
SOMMAIRE
AVANT-PROPOS.25

1 Domaine d’application .27

2 Références normatives.27

3 Termes et définitions .28

4 Critères d’aptitude à la fonction .29

5 Conditions pendant les essais .29

6 Applicabilité.30

7 Limites et essais d’émission .30
8 Limites et essais d’immunité.35
Annexe A (informative) Exemples d’appareils et d’accès.39
Annexe B (informative) Perturbations conduites générées par les convertisseurs de
puissance dans la plage 9 kHz à 30 MHz.
...