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In 1912 the first 110 kV-overhead power line entered service followed by the first 220 kV-overhead power line in 1923. In the 1920s RWE AG built the first overhead line for this voltage and in 1926 built a Rhine crossing with the pylons of Voerde, two masts 138 meters high.
variable voltage and frequency; trial runs 1898–1901 14 kV (See notes) 38 Hz – 48 Hz (See notes) Zossen – Marienfelde: test track (23.4 km); trial runs 1901–1904 variable voltage between 10 kV and 14 kV and frequency between 38 Hz and 48 Hz. 50 Hz Russia: Ship elevator of Krasnoyarsk Reservoir: length: 1.5 km, 9000 mm gauge
The 2 × 25 kV autotransformer system is a split-phase electric power system which supplies 25 kV power to the trains, but transmits power at 50 kV to reduce energy losses. It should not be confused with the 50 kV system. In this system, the current is mainly carried between the overhead line and a feeder transmission line instead of the rail.
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The ALP-44 is powered by overhead lines through one of the locomotive's two pantographs and can produce up to 7000 hp (5.2 MW) with a top speed of up to 125 mph (201 km/h). In commercial use, however, both New Jersey Transit and SEPTA ALP-44s were only cleared for speeds up to 100 mph (161 km/h).
The ALP-46 locomotives produce 7,100 hp (5,300 kW) and are powered by overhead catenary. They can reach a top speed of 100 mph (161 km/h). [1] The ALP-46 is derived from the DBAG Class 101 locomotive, of which the operating speed is 200 km/h (124 mph). The locomotives use Bombardier's MITRAC 3000 electric propulsion system.
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SEW-EURODRIVE GmbH & Co KG is a German manufacturing company located in Bruchsal, Germany. [ 1 ] The company produces gear units, motors, electric motors , and inverter technology.