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From 1928 to its abandonment in 1940, the narrow-gauge Boston, Revere Beach and Lynn Railroad was operated with overhead electrification. The railroad shut down in 1940, and portions of it were used for the MBTA Blue Line which opened in 1953, although it used an entirely new electrification system and is operated as part of a subway system.
The third rail system resulted, not surprisingly, in a number of accidents. It also resulted in a decree from the Connecticut Supreme Court on June 13, 1906 forbidding the use of third rail electrification within the state. [2] The New Haven was forced by this decision to design their main line electrification system using overhead catenary.
A catenary pole of the system. Catenary wires and contact wires are tensioned by individual tension balancers. The basic system unit is an elementary electrical section consisting of a segment of one or more parallel tracks, each with a contiguous contact (or catenary or trolley) wire for the locomotive pantograph and an electrically separate feed wire.
The Reading's system used catenary electrified at 12 kV 25 Hz like the competing Pennsylvania Railroad's 1915 initial electrification and 1930s mainline expansion. Unlike the PRR's system, which included multiple power sources and an extensive high-voltage transmission network, the Reading's electrification was supplied solely by the rotary ...
The overhead wiring, generally having two separate overhead lines and the rail for the third phase, was more complicated, and the low frequency used required a separate generation or conversion and distribution system. Train speed was restricted to one to four speeds, with two or four speeds obtained by pole-changing or cascade operation or both.
Railway electrification is the development of powering trains and locomotives using electricity instead of diesel or steam power. The history of railway electrification dates back to the late 19th century when the first electric tramways were introduced in cities like Berlin, London, and New York City.
Since 1940. Used both third rail DC (1200 V) and overhead line AC (6.3 kV 25 Hz) until 1955. Also uses German standard 15 kV AC 16 2/3 Hz overhead electrification on the section between Neugraben and Stade on line S3, opened in December 2007.
The Caltrain Modernization Program (CalMod), sometimes referred to as the Caltrain Electrification Project, was a $2.44 billion project which added a positive train control (PTC) system and electrified the main line of the U.S. commuter railroad Caltrain, which serves cities in the San Francisco Peninsula and Silicon Valley.
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