BEHAVIOUR OF PANTOGRAPHS AND OVERHEAD EQUIPMENT AT SPEEDS HIGHER THAN 160 KM/H. STATIC TESTS OF THE FS
During 1965, the FS carried out tests with their improved conventional type of overhead contact system to determine various static characteristics. The effect of varying the following parameters within the stated limits in the text was examined: span length; dropper configuration; contact wire sag. The compliance, natural frequency and impluse propagation velocity were determined for each solution tested and these formed the basis for evaluating the various factors examined. In general, it was found that compliance at the middle of the span (max.) is proportional to span length and is not affected by contact wire sag or non-uniform droppering. Increasing the dropper spacing in the neighbourhood of the mast does, however, decrease the stiffness of the system near the suspension points. Natural frequency is inversely proportional to span length and is not affected by contact wire sag although non-uniform droppering does affect it. Impulse propagation velocity was found to be very close to the theoretical value.
- Restrictions on the use of this document are contained in the explanatory material.
International Union of RailwaysOffice of Research and Experiments
- Publication Date: 1967-11
- Features: Appendices; Figures;
- Pagination: 16 p.
- TRT Terms: Catenaries (Railroads); Contact wire; Electrical conductivity; Pantographs; Railroad electrification
- Identifier Terms: Ferrovie dello Stato
- Old TRIS Terms: Conductor collector dynamics; Question a84
- Subject Areas: Railroads; Vehicles and Equipment;
- Accession Number: 00052711
- Record Type: Publication
- Source Agency: International Union of Railways
- Report/Paper Numbers: A84/RP 3/E
- Files: TRIS
- Created Date: May 14 1976 12:00AM