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A pantograph (or "pan" or "panto") is an apparatus mounted on the roof of an electric train, tram or trolley buses [1] to collect power through contact with an overhead line. The term stems from the resemblance of some styles to the mechanical pantographs used for copying handwriting and drawings.
English: A pantograph of ED9M electric multiple unit passes neutral section of 25 kV AC overhead line between sections with different phases without lowering. Before the passage of this section a main air circuit breaker of a car (in front of pantograph) switches off, after it switches on back. Kursavka station, Stavropol region, Russia
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.
Stone Faiveley pantograph in raised position on British Rail Class 86 25 kV AC Bo-Bo locomotive No.E3146 (later 86 017), London Euston, April 1969. France remained as Faiveley's core market. During the 1970s, the company introduced new corail coaches for the SNCF and provided equipment for a new generation of subway trains, the MF77. In 1972 ...
Power storms can knock the power out with lightning strikes on systems [18] with overhead wires, stopping trains following a power surge. During cold or frosty weather, ice may coat overhead lines. This can result in poor electrical contact between the collector and the overhead line, resulting in electrical arcing and power surges. [19]
A pantograph is a commonly used overhead suspension system for lamps and audio and video monitors in television studios. It is also used on a smaller scale in many photography studios. Using either motor driven cables or a spring system, the pantograph can be balanced so that a light touch can readjust the height of the load (usually a lamp).
The first locomotive to be fitted with the pantograph was Class 86 No 86244, during February 1980. The pantograph is the mainstay within the UK railway system, where it is used on most overhead electric locomotives and EMUs. It has also been exported across the world, being used on the US high speed train Acela and the Eurostar Class 373.
The train captures video footage from the front and rear power cars. The DV's equipment includes a video-based system utilising image recognition to look for defects such as missing clips. The DV also houses a non-contact overhead line monitoring system, which utilises lasers to measure the position of the wires in relation to the rails the ...