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



Reference EN 50122-2:1998
Title Railway applications - Fixed installations - Part 2: Protective provisions against the effects of stray currents caused by d.c. traction systems
Project Number 103
Abstract/Scope This standard specifies requirements for protective provisions against the effects of stray currents which result from the operation of d.c. traction systems. As experience for several decades has not shown evident corrosion effects from a.c. traction systems and actual investigations are not completed, this standard only deals with stray currents flowing from a d.c. traction system. This standard applies to all metallic fixed installations which form part of the traction system, and also to any other unrelated metallic components located in any position in the earth, which may carry stray currents resulting from the operation of the railway system. This standard applies to all new electrification of a d.c. railway system. The principles may also be applied to existing electrified systems where it is necessary to consider the effects of stray currents. 94


Current Stage code 6060
Current Stage code date 1998-05-07
Current Stage code deadline 1999-03-01
Deadline date for vote  


Mandate(s) M/024
Order Voucher BC/CLC/93-09/AV1


IEC Technical Body IEC/TC 9
Reference Document  
ICS 29.120.50 - Fuses and other overcurrent protection devices
45.020 - Railway engineering in general
Keywords Railway applications; Protective provision; Stray current; Traction system
Note Corrigendum to EN issued August 2001 * Superseded by EN 50122-2:2010
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 1998-05-07 1999-03-01 export to doc file  EN  FR  DE
5099 1998-04-01 1998-05-01  
5062 1998-02-03 1998-04-01  
5020 1997-09-17 1998-01-15  
4099 1996-12-10 1997-09-30  
4060 1996-05-14 1997-05-28  
4020 1995-07-20 1996-01-31  
3099 1995-03-21 1995-06-30  
2093 1994-11-08 1995-01-31  
2020 1992-12-04 1994-09-30  
2093 1992-03-24 1992-09-24  
2020 1991-12-10 1992-12-31  

Implementation Dates

date of Ratification (DOR) (1) 1998-04-01
date of Availability (DAV) (2) 1998-05-07
date of Announcement (DOA) (3) 1998-09-01
date of Publication (DOP) (4) 1999-03-01
date of Withdrawal (DOW) (5) 1999-03-01


Superseded by EN 50122-2:2010
Normative reference (6)  

(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.