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EVS-EN 50121-4:2015

Railway applications - Electromagnetic compatibility - Part 4: Emission and immunity of the signalling and telecommunications apparatus

General information
Withdrawn from 03.01.2017
Base Documents
EN 50121-4:2015
Directives or regulations
None
Standard history
Status
Date
Type
Name
03.01.2017
Main
03.12.2015
Main
03.04.2009
Corrigendum
EVS-EN 50121-4:2006/AC:2008
06.10.2006
Main
EVS-EN 50121-4:2006
This European Standard applies to signalling and telecommunication apparatus that is installed inside the railway environment. Signalling and telecommunication apparatus mounted in vehicles is covered by EN 50121-3-2:2015, signalling and telecommunication apparatus installed inside the substation and connected to substation equipment is covered by EN 50121-5:2015. This European Standard specifies limits for emission and immunity and provides performance criteria for signalling and telecommunications (S&T) apparatus (including power supply systems belonging to S&T) which may interfere with other apparatus inside the railway environment, or increase the total emissions for the railway environment 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 DC power port are within the emissions limits specified for AC power ports. The immunity levels given in this standard apply for - vital equipment such as interlocking or command and control, - apparatus inside the 3 m zone, - ports of apparatus inside the 10 m zone with connection inside the 3 m zone, - ports of apparatus inside the 10 m zone with cable length > 30 m. Other apparatus not covered by at least one of these given cases should be in compliance with EN 61000-6-2.
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