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



Reference EN 50125-1:1999
Title Railway applications - Environmental conditions for equipment - Part 1: Equipment on board rolling stock
Project Number 80
Abstract/Scope This standard intends to define environmental conditions within Europe (it can also be applied elsewhere by agreement). The scope of this standard covers the definitions and ranges of the following parameters: Altitude, Temperature, Humidity, Air movement, Rain, Snow and hail, Ice, Solar radiation, Lightning, Pollution, Vibrations and shocks, Electromagnetic interference environment, Acoustic noise environment, Supply system characteristics, for complete rolling stock and all on-board equipment (mechanical, electromechanical, electrical, electronic). In particular the standard defines interface conditions between the vehicle and its environment. The defined environmental conditions are considered as normal in service. Acceptable deviations are defined in the relevant clauses dealing with the environmental parameters, together with any mitigation in operation that may be required. Microclimates surrounding components may be defined by relevant product standards or by special requirements. Passenger effects on the equipment and equipment effects on the passengers are not considered in this standard. The standar does not apply to cranes, mining vehicle, cable cars. The standard also does not apply to natural disaster (earthquakes).


Current Stage code 6060
Current Stage code date 1999-09-13
Current Stage code deadline 2000-05-01
Deadline date for vote  


Directive(s) HSR (96/48/EC), CONRAIL (2001/16/EC), HSR (96/48/EC), RAIL (2008/57/EC)
Mandate(s) M/024
Order Voucher  


IEC Technical Body IEC/TC 9
Reference Document  
ICS 29.260 - Electrical equipment for working in special conditions
29.280 - Electric traction equipment
45.020 - Railway engineering in general
Keywords Railway applications; Rolling stock; Environmental conditions
Note PAGI report to 121BT: Discussions needed to know if EN is satisfactory for M/334 or if a revision is necessary
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 1999-09-13 2000-05-01 export to doc file  EN
5099 1999-08-01 1999-09-01  
5062 1999-05-06 1999-08-01  
5020 1999-01-13 1999-03-15  
3090 1998-12-08 1999-06-08  
5062 1998-11-04 1999-01-01  
5020 1998-06-30 1998-09-30  
4099 1997-06-27 1998-01-31  
4020 1995-05-03 1995-11-15  
3099 1994-11-24 1995-04-30  
3020 1993-10-25 1994-04-25  
2099 1993-01-31 1993-10-30  
2020 1992-11-04    

Implementation Dates

date of Ratification (DOR) (1) 1999-08-01
date of Availability (DAV) (2) 1999-09-13
date of Announcement (DOA) (3) 1999-11-01
date of Publication (DOP) (4) 2000-05-01
date of Withdrawal (DOW) (5) 2002-05-01


Superseded by EN 50125-1:2014
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.