I.S. EN 50121-4:2016现行
Railway Applications - Electromagnetic Compatibility Part 4: Emission and Immunity of the Signalling and Telecommunications Apparatus
出版：National Standards Authority of Ireland
专家解读视频
Pertains to signalling and telecommunication apparatus that is installed inside the railway environment.
NF EN 50121-4:2017 - Identical
SS EN 50121-4 Ed. 4 (2017) - Identical
SN EN 50121-4:2016 - Identical
DIN EN 50121-4:2017 - Identical
UNE EN 50121-4:2017 - Identical
DIN EN 50121-4:2016 - Identical
EN 50121-4:2016 - Identical
