EN 50121-1 PDF

Buy EN Railway Applications – Electromagnetic Compatibility – Part 1: General from SAI Global. Railway applications – Electromagnetic compatibility – Part 1: General; German version EN BS EN Railway applications. Electromagnetic compatibility. General. standard by British-Adopted European Standard, 01/31/.

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This ne alone is not sufficient to give presumption of conformity to the essential requirements of the EMC-Directive and is intended to be used in conjunction with other parts of this standard. It covers traction stock and trainsets, as well as independent hauled stock. Electrical noise may energise the detector although the train is present, giving a false indication of clear track.

BS EN 50121-1:2017

You may experience issues viewing this site in Internet Explorer 9, 10 or Electromagnetic compatibility Rolling stock. Electromagnetic compatibility Emission of the whole railway system to the outside world BS EN Electromagnetic compatibility Emission and immunity of the signalling and telecommunications apparatus BS EN Annex A describes the characteristics of the railway system which affect electromagnetic compatibility EMC behaviour.

There may be cases where apparatus eb to be positioned in restricted spaces 501211 added to an existing assembly, with the possible creation of environments of unusual severity. On 501121-1 voltage lines, a trackside conductor rail may be provided from which power is collected by a sliding contact known as the collector shoe.

The faster, easier way to work with standards. The resolution of this is a matter for discussion between the equipment supplier and the project manager, infrastructure controller or equivalent.

This prevents the passage of currents at track circuit frequencies in the running rails.

This auxiliary current may return to the locomotive via the rails and hence have an influence on apparatus on the track. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. No measurements need to be performed at frequencies where no requirement is specified.

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A management process to achieve EMC at the interface between the railway infrastructure and trains is referenced. Train and complete vehicle.

Hence, problems of EMC arise not only within the locomotive and the power supply but also in these associated systems. It is important to us that you purchase the right document. If you need help with the purchase or have any queries please email enquiries standards.

These converters may be on several coaches in a train and the summation of their noise must be considered. Phenomena excluded from the set are Nuclear EM pulse, abnormal operating conditions e. Auxiliary power is also regulated and, although of lower power than that supplied to the electric traction motors, can still be a significant source of electromagnetic noise.

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Along with these technical constraints, there is a particular additional requirement in the railway industry: This creates an interface between these two entities.

In an electric railway, the trains have to be supplied via sliding contacts from a supply line, called the catenary or overhead, or a trackside conductor rail, which is installed along the track. It presents the UK view on standards in Europe and at the international level. Railway applications – Electromagnetic compatibility – Part 1: The following dates were fixed: This plan should be established at as early a stage of the project as is possible.

The current generally returns to the substation via the rails, a separate return conductor or via the earth. Such locomotives also contain auxiliary systems which may be sources.

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550121-1 standard cannot cover all the possible configurations of apparatus, but the test levels are sufficient to achieve satisfactory EMC in the majority of cases. Learn more about the cookies we use and how to change your settings.

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The apparatus shall continue to operate as intended during and after the test. Railway applications – Electromagnetic compatibility Part 2: We recommend that you check the website of the publishers of the international document before making a purchase. Rolling stock – Train and complete vehicle Railway applications – Electromagnetic compatibility Part If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.

Among the phenomena which are involved in RF emission are: Temporary loss of function is allowed, provided the function is selfrecoverable or can be restored by the operation of the controls.

We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. The biological effects of non-ionizing radiation as well as apparatus for medical assistance, such as pacemakers, are not considered here.

Phenomena excluded from the set are Nuclear EM pulse, abnormal operating conditions and the induction effects of direct lightning strike. For details of these and other benefits contact Membership Administration. Revisions British Standards are updated by amendment or revision. For undated references, the latest edition of the referenced document including any amendments applies.

Although of relatively low power, these elements are close to the line and may affect other railway apparatus.