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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.
The British Rail Class 313 was a dual-voltage electric multiple unit (EMU) train built by British Rail Engineering Limited's Holgate Road carriage works between February 1976 and April 1977.
An Amtrak catenary maintenance vehicle. Both a crane and a movable platform can be seen on the vehicle's roof. A catenary maintenance vehicle (also known as a tower wagon or tower car) is a railroad maintenance of way vehicle that is used to maintain and inspect overhead line (also known as catenary) on electrified railroad or metro tracks.
Evidently supply of the overhead equipment was short. Later in life (when the wiring in yards had almost completely been removed) during overhaul the opportunity was taken, on some examples of the class, to remove the sometimes-troublesome pantograph, leading again to a vacant roof recess.
At the end of the National Express East Anglia franchise, Angel Trains opted to use off-lease Class 317/7 unit 317722 as a test-bed unit and engaged Bombardier Transportation to rebuild it as a pre-series unit with new traction equipment. The DC motors, traction electronics and thyristors were removed, though the original transformer remained ...
A pothead is a type of insulated electrical terminal used for transitioning between overhead line and underground high-voltage cable or for connecting overhead wiring to equipment like transformers. [1] Its name comes from the process of potting or encapsulation of the conductors inside the terminal's insulating bushing.
Unlike the Stadtbahn trains which use overhead lines for power, the DLR trains are powered by a bottom-contact third rail. The first three generations that have operated on the system looked similar, but there have been four main generations, subdivided into multiple orders, three of which are still in operation on the Docklands Light Railway ...
On rail lines which include electrification by a third rail or an overhead line system, maintenance of way work also includes installing, repairing and replacing these systems. [ 20 ] [ 21 ] [ 22 ] Overhead line electrification while complex, is a task that with proper planning, done from trains on existing rail lines.