FprEN 50121-2:2026

Railway applications - Electromagnetic compatibility - Part 2: Emission of the whole railway system to the outside world FprEN 50121-2:2026

Publication date:   Sep 4, 2026

Scope

This document is intended to define the electromagnetic environment of the whole railway system including urban mass transit and light rail systems. It describes the measurement method to verify the emissions and gives the cartography values of the fields most frequently encountered.
This document specifies the emission limits of the whole railway system to the outside world.
The emission parameters refer to the particular measuring points defined in Clause 5.
Also, the zones above and below the railway system can be affected by electromagnetic emissions and particular cases need to be considered individually (see EMC management plan in FprEN 50121 1:2026, Clause 4).
For existing railway systems, it is assumed that compliance with the emission requirements of FprEN 50121-3-1:2026, FprEN 50121-3-2:2026, FprEN 50121-4:2026 and FprEN 50121-5:2026 will ensure the compliance with the emission values given in this part.
This document gives emission limits for newly built railway systems (not yet in operation), or for modifications on providing of traction current (excluded those modifications covered with FprEN 50121 5: 2026), with different characteristics (e.g. higher design speed of the line, static switching components) in comparison with existing railway systems.