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FS Class E.472
The FS Class E.470 was an electric locomotive class of the state-owned Italian railway Ferrovie dello Stato. It was used on the Italian Three-phase AC railway electrification, three-phase test line from Rome–Sulmona–Pescara railway, Rome-Sulmona especially in express train service. After the end of the trial operation in 1945, the locomotives were scrapped, and no locomotive of the class has been preserved. Background The operating experience with the northern Italian three-phase network running at 3.6 kV, 16.7 Hz threw up several problems. With increasing power demands, the voltage was too low and the direct drive to the axles risked overloading the traction motors. Therefore, it was decided to try a trial route, which would be electrified with a 10 kV, 45 Hz three-phase power system. This had the advantage that power plants could be used with industrial frequency. It would be a test track with steep gradients and small radius curves. The Rome - Sulmona r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Locomotive
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or a supercapacitor. Locomotives with on-board fuelled prime movers, such as diesel engines or gas turbines, are classed as diesel-electric or gas turbine-electric and not as electric locomotives, because the electric generator/motor combination serves only as a power transmission system. Electric locomotives benefit from the high efficiency of electric motors, often above 90% (not including the inefficiency of generating the electricity). Additional efficiency can be gained from regenerative braking, which allows kinetic energy to be recovered during braking to put power back on the line. Newer electric locomotives use AC motor-inverter drive systems that provide for regenerative braking. Electric locomotives are quiet compared to diesel locomotives since there is no engine and exhaust noise and less mechanical noise. The lack of re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vado Ligure
Vado Ligure ( lij, Voæ), in antiquity Vada Sabatia, is a town and ''comune'' in the province of Savona, Liguria, in northern Italy. Economy Vado has a large industrial and commercial port. Vado Ligure is home to a railway construction plant, founded in 1905 as Società Italiana Westinghouse. In 1919 it was taken over by Tecnomasio Italia Brown Boveri and, since 2001, it has been part of Bombardier Transportation. It currently produces the FS Class E.464 locomotives. The town's territory also includes an electric power plant, whose two towers, high, are visible for kilometers in the neighbourhood. Twin towns * La Ravoire, France, since 2002 References Cities and towns in Liguria Roman towns and cities in Italy {{Liguria-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zara Bogie
A Krauss-Helmholtz bogie (''Krauss-Helmholtz-Lenkgestell'') is a mechanism used on steam locomotives and some electric locomotives to improve curve running. Operation The bogie comprises a carrying axle connected to a coupled axle via a shaft or lever. In straight running, any radial movement of the carrying axle results in a sideways movement of the coupled axle in the opposite direction. However, the carrying axle is centred by means of two heavy duty springs just behind it. In addition the pivot pin may be allowed to move sideways, but again is held centrally by heavy springs. When travelling round a curve, the carrying axle swings to one side causing the coupled axle to move sideways in the opposite direction. In this way radial forces during curve running are more or less evened out on both axles, so that riding qualities similar to those of a normal bogie are achieved and wear and tear reduced on wheel flanges and rails. The bogie is a type of pony truck and was name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UIC Classification Of Locomotive Axle Arrangements
The UIC classification of locomotive axle arrangements, sometimes known as the German classification''The Railway Data File''. Leicester: Silverdale, 2000. p. 52. . or German system,Kalla-Bishop P.M. & Greggio, Luciano, ''Steam Locomotives'', Crescent, 1985, p. 226. describes the wheel arrangement of locomotives, multiple units and trams. It is used in much of the world, notable exceptions being the United Kingdom, which uses a slightly simplified form of UIC (except for steam locomotives and small diesel shunters, where Whyte notation is used), and in North America, where the AAR wheel arrangement system (essentially another simplification of the UIC system) is used to describe diesel and electric locomotives; Whyte notation is used in North America only for steam locomotives. The classification system is managed by the International Union of Railways (UIC). Structure The UIC uses the following structure: ; Upper-case letters : Indicate driving axles, starting at A for a singl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Current
Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic current. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify ''current'' or ''voltage''. Direct current may be converted from an alternating current supply by use of a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alternating current via an inverter. Direct current has many uses, from the charging of batteries to large power sup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overhead Line
An overhead line or overhead wire is an electrical cable that is used to transmit electrical energy to electric locomotives, trolleybuses or trams. It is known variously as: * Overhead catenary * Overhead contact system (OCS) * Overhead equipment (OHE) * Overhead line equipment (OLE or OHLE) * Overhead lines (OHL) * Overhead wiring (OHW) * Traction wire * Trolley wire This article follows the International Union of Railways in using the generic term ''overhead line''. An overhead line consists of one or more wires (or rails, particularly in tunnels) situated over rail tracks, raised to a high electrical potential by connection to feeder stations at regular intervals. The feeder stations are usually fed from a high-voltage electrical grid. Overview Electric trains that collect their current from overhead lines use a device such as a pantograph, bow collector or trolley pole. It presses against the underside of the lowest overhead wire, the contact wire. Current collectors ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traction Substation
A traction substation, traction current converter plant, rectifier station or traction power substation (TPSS) is an electrical substation that converts electric power from the form provided by the electrical power industry for public utility service to an appropriate voltage, current type and frequency to supply railways, trams (streetcars) or trolleybuses with traction current. Conversions These systems can be used to convert three-phase 50 Hz or 60 Hz alternating current (AC) for the supply of AC railway electrification systems at a lower frequency and single phase, as used by many older systems, or to rectify AC into direct current (DC) for those systems (primarily public transit systems) using DC for traction power. The three-phase voltage from the local utility is stepped down and rectified in the traction substations to provide the required DC voltage. Equipment Rotating Originally, the conversion equipment usually consisted of one or more motor-generator sets contain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulmona
Sulmona ( nap, label= Abruzzese, Sulmóne; la, Sulmo; grc, Σουλμῶν, Soulmôn) is a city and ''comune'' of the province of L'Aquila in Abruzzo, Italy. It is located in the Valle Peligna, a plain once occupied by a lake that disappeared in prehistoric times. In the ancient era, it was one of the most important cities of the Paeligni and is known for being the native town of the Roman poet Ovid, of whom there is a bronze statue, located on the town's main road and named after him. History Ancient era Sulmona was one of the principal cities of the Paeligni, an Italic tribe, but no notice of it is found in history before the Roman conquest. A tradition alluded to by Ovid and Silius Italicus, which ascribed its foundation to Solymus, a Phrygian and one of the companions of Aeneas, is evidently a mere etymological fiction. The first mention of Sulmo occurs in the Second Punic War, when its territory was ravaged by Hannibal in 211 BC, who, however, did not attack the city itse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartiere San Lorenzo
San Lorenzo is an urban zone in Rome, Italy. Administratively it was part of both Municipio II and Quarter VI Tiburtino. It occupies roughly the two sides of the early stretch of Via Tiburtina, starting from Termini railway station and ending at the Verano area. The latter includes the ancient basilica of San Lorenzo fuori le Mura, from which the district takes its name. Originally a working-class neighbourhood (its inhabitants were mostly workers of the Wuehrer Brewery and the freight yard), it has been a popular, left-oriented area. During World War II San Lorenzo was heavily bombed by Allied planes (on 1943-07-19); the only massive bombing of Rome during the war (though not the only air raid on the city), it aimed at disrupting the railway communication pivoting on the nearby huge freight yard; however, it caused also extensive damage to the buildings of the district (including the Policlinico Umberto I and the basilica itself) and killing some 1,500 people. Maria Montesso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rome
, established_title = Founded , established_date = 753 BC , founder = King Romulus (legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption = The territory of the ''comune'' (''Roma Capitale'', in red) inside the Metropolitan City of Rome (''Città Metropolitana di Roma'', in yellow). The white spot in the centre is Vatican City. , pushpin_map = Italy#Europe , pushpin_map_caption = Location within Italy##Location within Europe , pushpin_relief = yes , coordinates = , coor_pinpoint = , subdivision_type = Country , subdivision_name = Italy , subdivision_type2 = Region , subdivision_name2 = Lazio , subdivision_type3 = Metropolitan city , subdivision_name3 = Rome Capital , government_footnotes= , government_type = Strong Mayor–Council , leader_title2 = Legislature , leader_name2 = Capitoline Assemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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