International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 50121-1:2006
Title Railway applications - Electromagnetic compatibility - Part 1: General
Project Number 15740
Abstract/Scope 1.1 This Part 1 of the European standards series EN 50121 outlines the structure and the content of the whole set. This part alone is not sufficient to give presumption of conformity to the essential requirements of the EMC-Directive and must be used in conjunction with other parts of this standard. Annex A describes the characteristics of the railway system which affect electromagnetic compatibility (EMC) behaviour. Phenomena excluded from the set are Nuclear EM pulse, abnormal operating conditions and the induction effects of direct lightning strike. Emission limits at the railway boundary do not apply to intentional transmitters within the railway boundaries. Safety considerations are not covered by this set of standards. The biological effects of non-ionising radiation as well as apparatus for medical assistance, such as pacemakers, are not considered here. 1.2 This European Standard is supplemented by the following specific standards: EN 50121-2 Railway applications - Electromagnetic compatibility - Part 2: Emission of the whole railway system to the outside world EN 50121-3-1 Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train and complete vehicle EN 50121-3-2 Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus EN 50121-4 Railway applications - Electromagnetic compatibility - Part 4: Emission and immunity of the signalling and telecommunications apparatus EN 50121-5 Railway applications - Electromagnetic compatibility - Part 5: Emission and immunity of fixed power supply installations and apparatus


Current Stage code 6060
Current Stage code date 2006-07-28
Current Stage code deadline 2007-07-01
Deadline date for vote 2006-05-07


Directive(s) EMC (2004/108/EC), HSR (96/48/EC), CONRAIL (2001/16/EC)
Mandate(s) M/404
Order Voucher  


IEC Technical Body IEC/TC 9
Reference Document  
ICS 29.020 - Electrical engineering in general
29.280 - Electric traction equipment
45.020 - Railway engineering in general
Keywords Railway applications; Electromagnetic compatibility
Note Corrigendum to EN issued May 2008
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2006-07-28 2007-07-01 export to doc file  EN  FR  DE
5099 2006-07-01 2006-11-01  
5061 2006-05-29 2006-07-01  
5060 2006-05-03 2006-05-15 export to doc file  EN
5020 2006-02-24 2006-04-28 export to doc file  EN
4099 2005-07-18 2006-05-07  
4060 2005-01-10 2005-06-20  
4020 2004-07-09 2005-01-07  
3099 2004-05-07 2004-05-21  
2020 2003-03-18 2003-09-18  

Implementation Dates

date of Ratification (DOR) (1) 2006-07-01
date of Availability (DAV) (2) 2006-07-28
date of Announcement (DOA) (3) 2007-01-01
date of Publication (DOP) (4) 2007-07-01
date of Withdrawal (DOW) (5) 2009-07-01


Supersedes EN 50121-1:2000
Superseded by prEN 50121-1:2013
Normative reference (6) EN 50238:2003
IEC 60050-161:1990
EN 61000-6-2:2005

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.