Norm

NEN-EN 50533:2010 Ontw. en

Spoorwegen en soortgelijk geleid vervoer - Karakteristieken van het drie-fasennet in railvoertuigen van de voeding van hulpsystemen

  • Deze norm is ingetrokken sinds 28-11-2011

29,20

Over deze norm

Status Ingetrokken
Aantal pagina's 25
Commissie Elektrisch materieel, systemen en elektronische toepassingen voor spoorwegen en soortgelijk geleid vervoer
Gepubliceerd op 01-01-2010
Taal Engels
This European Standard describes the electrical characteristics of the three-phase train line which delivers the electrical energy from the auxiliary power converter system to the auxiliary loads. It applies to - locomotive hauled passenger trains, - electric multiple units, - diesel electric multiple units. This European Standard may apply to other rolling stock types (e.g. light rail vehicles, tramways, metros, etc.) if they are not in the scope of another specific standard. The three-phase voltage characteristics depend on the performances of the auxiliary converters which supply the train line but also on the AC load characteristics connected to this train line. In railway applications the available auxiliary power of the train line is generally a little higher than the power needed by the consumer loads, consequently tight interactions between the auxiliary power converter system and the loads are common and have to be taken into consideration for a proper operation at train system level. The main objective followed by this European Standard is to define as much as possible the static characteristics and the dynamic behaviour of the on-board three-phase supply network to assure the best electrical compatibility with the AC loads connected to. This European Standard is a guideline for specifying and designing the different parts of the auxiliary power supply system namely the different auxiliary converters and the AC loads (i.e. 3 AC motors, converters, filters, transformers, etc.) connected to the grid. Some specific characteristics of the train line voltage may impact the reliability and the life time of the AC loads if they are not taken into consideration during the design phase of the AC loads. The three-phase train line voltages are never perfectly balanced and pure sinusoidal waveform voltages, as examples: - the switching of the semi-conductors within the static auxiliary converters may generate voltage harmonics and dv/dt steps on the train line; - the line to earth voltage level can vary with the auxiliary supply architecture and the type of faults in the train line; - a common mode voltage can appear to the star point of the 3 AC loads; - the non linear AC loads can be a source of current harmonics, those currents combined with the train line impedance create voltage harmonics too (mainly the input rectifiers of certain AC loads). In summary: - voltage harmonics can generate additional noise, extra Joule or iron losses in auxiliary motors and transformers; - high dv/dt and the common mode voltage are at the origin of motor bearing currents due to the EDM (electrostatic discharge machining) effect which may lead to a reduced bearing lifetime; - voltage spikes and overvoltages may cause an early ageing of the winding insulation material

Details

ICS-code 29.280
45.060.01
Nederlandse titel Spoorwegen en soortgelijk geleid vervoer - Karakteristieken van het drie-fasennet in railvoertuigen van de voeding van hulpsystemen
Engelse titel Railway applications - Three-phase train line voltage characteristics
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