third rail - tradução para russo
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![Reading]] as the [[North Downs Line]] only has [[third rail electrification]] on shared sections.](https://commons.wikimedia.org/wiki/Special:FilePath/166206 at Redhill.jpg?width=200 "Reading]] as the [[North Downs Line]] only has [[third rail electrification]] on shared sections.")
![Skokie Swift]]](https://commons.wikimedia.org/wiki/Special:FilePath/3rd rail to overhead wire transition zone on the Skokie Swift.jpg?width=200 "Skokie Swift]]")
![A [[Brussels Metro]] station. The elevated third rails for both tracks can be seen halfway between the platforms.](https://commons.wikimedia.org/wiki/Special:FilePath/Demey station, looking West from the Herrmann-Debroux bound platform (Auderghem, Belgium).jpg?width=200 "A [[Brussels Metro]] station. The elevated third rails for both tracks can be seen halfway between the platforms.")
![NYC Subway]] car making contact with the third rail. In the foreground is the third rail for the adjacent track.](https://commons.wikimedia.org/wiki/Special:FilePath/NYC Subway Third Rail Induction Motor.jpg?width=200 "NYC Subway]] car making contact with the third rail. In the foreground is the third rail for the adjacent track.")
![Rail]]](https://commons.wikimedia.org/wiki/Special:FilePath/Thirdrailillustration.png?width=200 "Rail]]")
![ancillaries]] of the subway cars.](https://commons.wikimedia.org/wiki/Special:FilePath/Third Rail for Toronto Transit Commission.jpg?width=200 "ancillaries]] of the subway cars.")
![current conductors]]. The horizontal [[contact shoe]] is between the pair of rubber wheels.](https://commons.wikimedia.org/wiki/Special:FilePath/Metro Paris rubber wheel.jpg?width=200 "current conductors]]. The horizontal [[contact shoe]] is between the pair of rubber wheels.")
![central rail]] power feed](https://commons.wikimedia.org/wiki/Special:FilePath/London Stansted people mover rail.JPG?width=200 "central rail]] power feed")
![A [[contact shoe]] for top-contact third rail on [[SEPTA]]'s [[Norristown High Speed Line]] (third rail not visible)](https://commons.wikimedia.org/wiki/Special:FilePath/Third Rail contact shoe.jpg?width=200 "A [[contact shoe]] for top-contact third rail on [[SEPTA]]'s [[Norristown High Speed Line]] (third rail not visible)")
![CTA]] [[Chicago 'L']] car](https://commons.wikimedia.org/wiki/Special:FilePath/CTA third rail contact shoe.jpg?width=200 "CTA]] [[Chicago 'L']] car")
![third rail]]3) The contact surface](https://commons.wikimedia.org/wiki/Special:FilePath/Koncevoy otvod.jpg?width=200 "third rail]]3) The contact surface")
![Bottom contact third rail in the [[sheath insulator]]](https://commons.wikimedia.org/wiki/Special:FilePath/Third rail vienna 1.jpg?width=200 "Bottom contact third rail in the [[sheath insulator]]")
![Rechnoy Vokzal]] station of the [[Novosibirsk Metro]] a station with left-hand platforms.](https://commons.wikimedia.org/wiki/Special:FilePath/Rechnoy vokzal (Novosibirsk).jpg?width=200 "Rechnoy Vokzal]] station of the [[Novosibirsk Metro]] a station with left-hand platforms.")
![With surface contact third and fourth rail systems a heavy "shoe" suspended from a wooden beam attached to the bogies collects power by sliding over the top surface of the electric rail. This view shows a [[British Rail Class 313]] train.](https://commons.wikimedia.org/wiki/Special:FilePath/Top contact pickup shoe.jpg?width=200 "With surface contact third and fourth rail systems a heavy \"shoe\" suspended from a wooden beam attached to the bogies collects power by sliding over the top surface of the electric rail. This view shows a [[British Rail Class 313]] train.")
![Arcs]] like this are normal and occur when the electric power collection shoes of a train that is drawing power reach the end of a section of conductor rail.](https://commons.wikimedia.org/wiki/Special:FilePath/Arcing pickup shoe.jpg?width=200 "Arcs]] like this are normal and occur when the electric power collection shoes of a train that is drawing power reach the end of a section of conductor rail.")
![electrical conduction]]](https://commons.wikimedia.org/wiki/Special:FilePath/Third rail at South Station, October 2002.jpg?width=200 "electrical conduction]]")
![Track of [[Singapore LRT]]; the third rail is on the right side](https://commons.wikimedia.org/wiki/Special:FilePath/Track of Singapore LRT.jpg?width=200 "Track of [[Singapore LRT]]; the third rail is on the right side")
![[[Sapporo Subway]] with a centrally placed guiding/return rail](https://commons.wikimedia.org/wiki/Special:FilePath/ST SN5000 20061102 001.jpg?width=200 "[[Sapporo Subway]] with a centrally placed guiding/return rail")
железнодорожное дело
контактный рельс
токопроводящий рельс
третий рельс
строительное дело
третий (токопроводящий, контактный) рельс
Definição
Wikipédia
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A third rail, also known as a live rail, electric rail or conductor rail, is a method of providing electric power to a railway locomotive or train, through a semi-continuous rigid conductor placed alongside or between the rails of a railway track. It is used typically in a mass transit or rapid transit system, which has alignments in its own corridors, fully or almost fully segregated from the outside environment. Third rail systems are usually supplied from direct current electricity.
Modern tram systems, street-running, avoid the risk of electrocution by the exposed electric rail by implementing a segmented ground-level power supply, where each segment is electrified only while covered by a vehicle which is using its power.
The third-rail system of electrification is not related to the third rail used in dual gauge railways.
