BS EN 50121-3-1:2015

This European Standard specifies the emission and immunity requirements for all types of rolling stock. It covers traction stock, hauled stock and trainsets including urban vehicles for use in city streets. The frequency range considered is from 0Hz (d.c.) to 400Ghz. No measurements need to be performed at frequencies where no requirement is specified. The scope of this part of the standard ends at the interface of the rolling stock with its respective energy inputs and outputs. In the case of locomotives, trainsets, trams etc., this is the current collector (pantograph, shoe gear). In the case of hauled stock, this is the a.c. or d.c. auxiliary power connector. However, since the current collector is part of the traction stock, it is not entirely possible to exclude the effects of this interface with the power supply line. The slow moving test has been designed to minimize these effects. This European standard specifies the emission limits of the rolling stock to the outside world. There may be additional compatibility requirements within the railway system identified in the EMC plan (e.g. as specified in EN50238 ). Basically, all apparatus to be integrated into a vehicle shall meet the requirements of Part3-2 of this standard. In exceptional cases, where apparatus meets another EMC Standard, but full compliance with Part3-2 is not demonstrated, EMC shall be ensured by adequate integration measures of the apparatus into the vehicle system and/or by an appropriate EMC analysis and test which justifies deviating from Part3-2. The electromagnetic interference concerning the railway system as a whole is dealt with in EN50121‑2 . These specific provisions are to be used in conjunction with the general provisions in EN50121‑1 .