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Trolley pole wheel on top of the trolley pole of Twin City Rapid Transit Company No. 1300. A current collector (often called a "pickup") is a device used in trolleybuses, trams, electric locomotives and EMUs to carry electric power from overhead lines, electric third rails, or ground-level power supplies to the electrical equipment of the vehicles.
Modern European systems predominantly make use of bottom or side contact power rails. There are numerous urban rail systems, including these running mostly in tunnels, which do not use third rail at all. Such systems can be found in Asia, which may have been influenced by the overhead power supply formula followed by Tokyo Metro after 1960
Contact between a pantograph and an overhead line is usually assured through a block of graphite. This material conducts electricity while working as a lubricant. As graphite is brittle, pieces can break off during operation. Poorly-built pantographs can seize the overhead wire and tear it down, and poor-condition wires can damage the pantograph.
The French branch line which serves Chamonix and the Mont Blanc region (Saint-Gervais-le-Fayet to Vallorcine) is third rail (top contact) and metre gauge. It continues in Switzerland, partly with the same third-rail system, partly with an overhead line. The 63 km (39 mi) long Train Jaune line in the Pyrenees also features a third rail.
Contact rail may refer to: Overhead conductor rail; Third rail; Fourth rail; See also. Conduit current collection; Current collector; Ground-level power supply; Guide ...
The so-called "murder hornet" has been eradicated from the United States, five years after the invasive species was first discovered in Washington state, officials declared Wednesday. There have ...
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