scope:

This European Standard specifies the emission and immunity requirements for all types of rolling stock. It covers traction stock and trainsets including urban vehicles for use in city streets. The frequency range considered is from d.c. to 400 GHz. At present, testing is not defined for frequencies above 1 GHz. The scope of this part of the standard ends at the interface of the stock with its respective energy inputs and outputs. In the case of locomotives, trainsets, trams etc., this is the sliding contact (or the third rail), in case of hauled stock this is the a.c. or d.c. auxiliary power connector. However, since the pantograph is part of the tractive stock, it is not entirely possible to exclude the effects of the interface. The electromagnetic interference concerning the railway system as a whole is dealt with in EN 50121-2. These specific provisions are additional to the general provisions in EN 50121-1.