This part of IEC 62236 applies to signalling and telecommunication apparatus that is installed inside the railway environment. Signalling and telecommunication apparatus mounted in vehicles is covered by IEC 62236-3-2:201 8, signalling and telecommunication apparatus installed inside the substation and connected to substation equipment is covered by IEC 62236-5:201 8.
This document 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 Electromagnetic Interference (EMI) to apparatus outside the railway system.
