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  2. Overhead line - Wikipedia

    en.wikipedia.org/wiki/Overhead_line

    The generic term used by the International Union of Railways for the technology is overhead line. [1] It is known variously as overhead catenary, overhead contact line (OCL), overhead contact system (OCS), overhead equipment (OHE), overhead line equipment (OLE or OHLE), overhead lines (OHL), overhead wiring (OHW), traction wire, and trolley wire.

  3. Overhead power line - Wikipedia

    en.wikipedia.org/wiki/Overhead_power_line

    Overhead lines or overhead wires are used to transmit electrical energy to trams, trolleybuses or trains. Overhead line is designed on the principle of one or more overhead wires situated over rail tracks. Feeder stations at regular intervals along the overhead line supply power from the high-voltage grid.

  4. Structure gauge - Wikipedia

    en.wikipedia.org/wiki/Structure_gauge

    Increasing the structure gauge for a larger loading gauge can involve substantial work. The UK's Midland Main Line being upgraded in 2014. In narrow curves, long cars like this 26.4 m (86 ft 7 in) long express train car protrude further into the gauge than on a straight track.

  5. Template:Railway-routemap - Wikipedia

    en.wikipedia.org/wiki/Template:Railway-routemap

    This is a route-map template for a railway in {{{1}}}. For a key to symbols, see {{railway line legend}}.; For information on using this template, see Template:Routemap. ...

  6. Minimum railway curve radius - Wikipedia

    en.wikipedia.org/wiki/Minimum_railway_curve_radius

    The minimum railway curve radius is the shortest allowable design radius for the centerline of railway tracks under a particular set of conditions. It has an important bearing on construction costs and operating costs and, in combination with superelevation (difference in elevation of the two rails) in the case of train tracks , determines the ...

  7. Pantograph (transport) - Wikipedia

    en.wikipedia.org/wiki/Pantograph_(transport)

    Until 2010, the Oslo Metro line 1 changed from third rail to overhead line power at Frøen station. Due to the many level crossings, it was deemed difficult to install a third rail on the rest of the older line's single track. [15] After 2010 third rails were used in spite of level crossings. The third rails have gaps, but there are two contact ...

  8. 25 kV AC railway electrification - Wikipedia

    en.wikipedia.org/wiki/25_kV_AC_railway...

    The overhead line (3) and feeder (5) are on opposite phases so the voltage between them is 50 kV, while the voltage between the overhead line (3) and the running rails (4) remains at 25 kV. Periodic autotransformers (9) divert the return current from the neutral rail, step it up, and send it along the feeder line.

  9. Dual electrification - Wikipedia

    en.wikipedia.org/wiki/Dual_electrification

    Dual electrification is a system whereby a railway line is supplied power both via overhead catenary and a third rail. This is done to enable trains that use either system of power to share the same railway line, for example in the case of mainline and suburban trains (as used at Hamburg S-Bahn between 1940 and 1955). [1]