{"id":248563,"date":"2024-10-19T16:22:36","date_gmt":"2024-10-19T16:22:36","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-50121-42016a12019\/"},"modified":"2024-10-25T11:32:48","modified_gmt":"2024-10-25T11:32:48","slug":"bs-en-50121-42016a12019","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-50121-42016a12019\/","title":{"rendered":"BS EN 50121-4:2016+A1:2019"},"content":{"rendered":"

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\u20113\u20112:2016<\/span> <\/span>, signalling and telecommunication apparatus installed inside the substation and connected to substation equipment is covered by EN 50121\u20115:2016<\/span> <\/span>.<\/p>\n

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.<\/p>\n

The requirements specified in this standard apply for:<\/p>\n