BS/EN 50121-3-2-2016 pdf download.Railway applications Electromagnetic compatibility Part 3-2 : Rolling stock – Apparatus.
EN 55022:2010, Information technology equipment – Radio disturbance characteristics – Limits and methods of measurement (CISPR 22:2008, modified)
EN 61000-4-2:2009, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement techniques – Electrostatic discharge immunity test (IEC 61000-4-2:2008)
EN 61000-4-3:2006. Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test (IEC 61000-4-3:21)06)
EN 610004-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement techniques – Electrical fast transientiburst immunity test (IEC 61000-4-4:2012)
EN 610004-5:2014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement techniques – Surge immunity test (IEC 61000.4-5:2014)
EN 61000-4-6:2014. Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement techniques – Immunity to conducted disturbances. induced by radio-frequency fields (IEC 61000-4-
5:20 13)
EN 61000-4-30:2015, Electromagnetic compatibility (EMC) – Part 4-30: Testing and measurement techniques – Power quality measurement methods (IEC 61000-4-30:2015)
EN 61000.64:20071. Electromagnetic compatibility (EMC) – Part 6-4: Generic standards – Emission standard for industrial environments (IEC 61000-6-4:2006)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
rolling stock apparatus
finished product with an intnnsic function intended for implementation into the rolling stock installation
3.1.2
port
particular interface of the specified apparatus with the external environment
EXAMPLE AC power port, DC power pod. 110 (inputloutput) port, earth port,
[SOURCE: IEC 60050-821:2015, 821-11-36]
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 susceptibdity to noise as appropriate In the frequency band being investigated consistent with normal applications. The conditions dunng testing shall be defined in a test plan (see basic standard of the EN 61000-4 series).
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 e.g. with EN 55022:2010. Clause 8.
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 Ihe 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 nominal supply voltage, unless otherwise indicated,
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 and test report.
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 arid reproducible conditions for each type of disturbance.
The emission limits defined in EN 61000-6-4, Table 1 (Emission — enclosure port) shall be complied
Measurement distance is lOm according line 1.1 in Table 1 of EN 61000-64. A measurement distance of 3m may be used with the limit increased by 10 dB.
Traction converters and auxiliary converters over 50 kVA cannot be tested individually but when the vehicle is tested as a whole in accordance with EN 50121-3-1.
8 Immunity requirements
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 3 to 5.
The contents of these “Basic Standards” are not repeated here, however modifications or addibonal information needed for the practical application of the tests are given in this standard.
When installing new apparatus in existing rolling stock or replacing apparatus special care should be taken to ensure that EMC is maintained e.g. in the EMC management plan.BS/EN 50121-3-2-2016 pdf download.

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