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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The 550121-1 shall continue to operate as intended after the test. For details of these and other benefits contact Enn Administration. Search all products by. Compliance with a British Standard cannot confer immunity from legal obligations. This current, which can be A, is a source of noise to adjacent equipment.

Railway electronics

These include neighbouring railway systems; trackside radio stations e. Details are given in annex A.

No 501221-1 need to be performed at frequencies where no requirement is specified. This collection is via a series of short arcs which act as radio sources; special case arcing and transients which are produced when the pantograph is raised or lowered, or the vehicle circuit breaker is closed or opened.

List of EN standards

Worldwide Standards We can source any standard from anywhere in the world. General requirements, tests and guidance for alarm systems in medical electrical equipment and medical electrical systems You may be interested in this related standard.

A management process to achieve EMC at the 50121–1 between the railway infrastructure and trains is referenced. There may be cases where apparatus has to be positioned in restricted spaces or added to an existing assembly, with the possible creation of environments of unusual severity.


Emission of the whole railway system to the outside world This part sets the emission limits from the railway to the outside world at radio frequencies. The railway apparatus is assembled into large systems and installations, such as trains and signalling control 5012-11.

The railway is an integrated system in which electricity has many uses in addition to train propulsion including: The immunity levels for the apparatus will normally ensure reliable operation, but it is necessary to prepare an EMC management plan to deal with complex situations or to deal with specific circumstances.

General requirements for safety – Collateral Standard: Limits are also placed on EM emission by railways into the outside world.

The Electronic Components EMC department of the ANPI laboratories conducts tests on components installed on trains and along the tracks, in accordance with the following standards. Railway applications – Electromagnetic compatibility Part 2: You may experience issues viewing this site in Internet Explorer 9, 10 or Emission and immunity of fixed power supply installations and apparatus EN EN EN EN EN 2 Normative references The following referenced documents are indispensable for the application of this document.

The power obtained by this means is transmitted to the traction vehicle via a system of flexiblesuspension contact lines known as the overhead catenary with which a locomotive-mounted articulated device known as the pantograph is brought into contact.

This auxiliary current may return to the locomotive via the rails and hence have an influence on apparatus on the track. Accept and continue Learn more about the cookies we use and how to change your settings. Users are responsible for its correct application.

It is produced transiently at substations when high voltage switching takes place, is distributed along the overhead when it is energised, is enhanced when non-linear traction loads such as rectifiers enn supplied, and is stimulated locally when flashover takes place. Shopping Cart E shopping cart is empty. The variety and the diversity of the apparatus within the scope of this set of standards makes it difficult to define precise criteria for the evaluation of the immunity test results.


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EVS-EN – Estonian Centre for Standardisation

Although we endeavour to maintain an up-to-date catalogue, on occasion we may not have the latest version of a document, including where it has not yet been provided through an international feed. This European Standard supersedes EN A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status 5011-1 the 550121-1 versions.

These effects are local and attenuate rapidly with distance; partial flashovers across dry bands of polluted insulator surfaces. The compatibility between railway emissions and their external environment is based upon emission limits from the railways being set by considering the results from measurements at the time that the EMC Directive became enforceable. The limits for EMC phenomena are set so that the railway as a whole satisfies the Directive on electromagnetic compatibility with the outside world, and so that EMC is achieved between the various parts of the railway.

The apparatus shall continue to operate as intended during and after the test. It is not, therefore, possible to establish immunity tests and limits for these large assemblies. Please download Chrome or Firefox or view our browser tips. The full set of equipment necessary for tests on these electronic components for sn railway market can be found in a single place in the ANPI laboratories. Particular care should be taken when in proximity to equipment not covered by the EMC Directive such as radio transmission equipment, military or medical installations.