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Executive summary

Electromagnetic compatibility (EMC) behaviour and management process for achieving EMC at the interface between railway infrastructures and trains.


This European Standard, a part of the EN 50121 series, outlines the structure and the content of the whole set of standards.

The characteristics of the railway system which affect electromagnetic compatibility (EMC) behaviour and management process for achieving EMC at the interface between the railway infrastructure, as defined in the EU Directive 91/440/EEC, and trains, are described in annexes to this standard.

The objective of this standard is to specify the EM emission and immunity requirements for railway products, and for the railway as an installation.

Phenomena excluded from the set are nuclear EM pulse, abnormal operating conditions and the induction effects of direct lighting strike.

Emission limits at the railway boundary do not apply to intentional transmitters within the railway boundaries.

This standard does not cover biological effects of non-ionizing radiation as well as apparatus for medical assistance, such as pacemakers.

History and related standards

This European Standard supersedes DD ENV 50121-1:1996 which is withdrawn.

This European Standard is supplemented by the following specific standards:

EN 50121-2, EN 50121-3-1, EN 50121-3-2, EN 50121-4 and EN 50121-5.

This Standard also includes the cross-references: EN 61000-6-2 and IEC 60050(161).

BS EN 50121-1:2006 supersedes BS EN 50121-1:2002 which has been withdrawn.

ISBN 0 580 49107 2

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