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

 

Project

Reference EN 50121-4:2006
Title Railway applications - Electromagnetic compatibility - Part 4: Emission and immunity of the signalling and telecommunications apparatus
Project Number 16361
Abstract/Scope This European Standard applies to signalling and telecommunication apparatus which is installed in the railway environment. Signalling and telecommunication apparatus mounted in vehicles is covered by EN 50121-3-2. This standard specifies limits for emission and immunity and provides performance criteria for signalling and telecommunications (S&T) apparatus which may interfere with other apparatus in the railway environment, or increase the total emissions for the railway environment beyond the limits defined in the appropriate standard and so risk causing Electro-Magnetic Interference (EMI) to apparatus outside the railway system. Apparatus which complies with the emission levels of EN 61000-6-4 will meet the emission requirements of this standard provided that emissions from any d.c. power port are within the emissions limits specified for a.c. power ports. The immunity levels of EN 61000-6-2 will also be adequate except for the special case of apparatus as defined in note 1 of Table 1. This standard provides the immunity requirements for such apparatus. The immunity levels given for the apparatus will in most cases allow the apparatus to perform as intended in the railway environment (see note). The immunity level establishes a common reference for evaluating the performance of the apparatus when subject to interference resulting from direct exposure of the apparatus and associated cables to a radio frequency field, or by coupling of the interference from a remote source. If a port is intended to transmit or receive for the purpose of radio communication (intentional radiators. e.g. transponder systems), then the emission and immunity limits in this standard at the communication frequency do not apply. The standard does not specify basic personal safety requirements for apparatus such as protection against electric shock, unsafe operation, insulation co-ordination and related dielectric tests. The requirements were developed for and are applicable to this set of apparatus when operating under normal conditions. Fault conditions of the apparatus have not been taken into account. The requirements and test methods also apply to telecommunications and signalling data and power lines connected to the equipment under test (EUT). The frequency range considered is from d.c. to 400 GHz. No measurements need to be performed at frequencies where no requirement is specified. For products in the scope of EN 61000-3-2 or EN 61000-3-3, the requirements of those standards apply. Testing methods are given in the basic standards listed in Clause 2, Normative references. These specific provisions are to be used in conjunction with the general provisions in EN 50121-1. NOTE The immunity and emission levels do not of themselves guarantee that the integration of apparatus will necessarily be satisfactory. The standard cannot cover all the possible configurations of the apparatus, but the test levels are sufficient to achieve satisfactory EMC in the majority of cases.
Status
Published

Status

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

Legal

Directive(s) EMC (2004/108/EC)
Mandate(s) M/404
Order Voucher  

Details

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; Signalling; Telecommunications; Immunity
Note Corrigendum to EN issued May 2008
A-Deviation(s)  
Special National Condition(s)  

Environment

Clause
Categories - Aspects
Product Life Cycle
Information

History

Stage
Date
Deadline Date
Documents
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  

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

Relations


(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.