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FS Class E.332
FS Class E.332 was a class of three-phase electric locomotives of the Italian State Railways (FS). They were used for the haulage of passenger trains between 1917 and 1963. Designed and built at the same time as the FS Class E.331, they represented an attempt by FS to extend the use of three-phase AC electric traction from primary to secondary routes. Their performance was disappointing and they were relegated to a marginal role, in which they remained despite several modifications. Overview The good results of the experiments with, and then regular use of, the three-phase AC traction system, had, by 1912, induced the FS to order 45 locomotives of Class E.550 and 16 of Class E.330. The Material and Traction Service of FS now decided to consider the possibility of breaking the monopoly of the Italian Westinghouse Company (Società Italiana Westinghouse) with the acquisition of two new classes of locomotives for passenger trains, the E.331 and the E.332. In the spring of 1913, ... [...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] |
2C2 3100
The 2C2 3100 were a class of electric locomotives of the Chemins de fer du Midi, France. They were ordered in 1914 but, because of the First World War, deliveries did not begin until 1923. They were designed for alternating current at 12 kV, 16⅔ Hz but, before construction, they were re-designed for direct current at 1,500 V. History These locomotives were ordered from Constructions Electriques de France (CEF), Tarbes in 1914 following the decision to electrify the Midi network at 12 kV 16⅔ Hz and to order six prototypes locomotives. Their delivery was delayed by the First World War and then by the government decision of 1920 to adopt 1,500 V direct current for new electrification schemes. It was not until 1923 that the first two prototypes began their tests. The original livery was blue. Technical details The machines were initially designed with three Westinghouse motors arranged horizontally but were re-designed with 1,500 V Dick Kerr motors arranged vertically and, pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florence
Florence ( ; it, Firenze ) is a city in Central Italy and the capital city of the Tuscany region. It is the most populated city in Tuscany, with 383,083 inhabitants in 2016, and over 1,520,000 in its metropolitan area.Bilancio demografico anno 2013, datISTAT/ref> Florence was a centre of medieval European trade and finance and one of the wealthiest cities of that era. It is considered by many academics to have been the birthplace of the Renaissance, becoming a major artistic, cultural, commercial, political, economic and financial center. During this time, Florence rose to a position of enormous influence in Italy, Europe, and beyond. Its turbulent political history includes periods of rule by the powerful Medici family and numerous religious and republican revolutions. From 1865 to 1871 the city served as the capital of the Kingdom of Italy (established in 1861). The Florentine dialect forms the base of Standard Italian and it became the language of culture throughout Ital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genova Piazza Principe Railway Station
Genova Piazza Principe railway station (commonly called ''Genova Principe'' or incorrectly ''Genova Porta Principe'') is the central station of Genoa and is located on Piazza Acquaverde, occupying the entire north side of Via Andrea Doria—where the station entrance is located—in the town centre and a short distance from the Palazzo del Principe, from which it takes its name. It is used by about 66,000 passengers per day and 24,000,000 per year. The first temporary station was opened in 1854 at the end of the Turin–Genoa railway, line from Turin. Lines were later opened to Genoa–Milan railway, Milan, Pisa–La Spezia–Genoa railway, Rome and Genoa–Ventimiglia railway, the French border at Ventimiglia railway station, Ventimiglia. History The station derives its name from the adjacent Piazza del Principe (In Italian language, Italian literally "plaza of the prince"), located next to the Palazzo del Principe (literally "palace of the prince") adjacent to the street called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivarolo Ligure
Rivarolo Ligure is a quarter in the north side of the city of Genoa Genoa ( ; it, Genova ; lij, Zêna ). is the capital of the Italian region of Liguria and the List of cities in Italy, sixth-largest city in Italy. In 2015, 594,733 people lived within the city's administrative limits. As of the 2011 Italian ce ..., and is part of the Municipality Valpolcevera of Genoa. Description An important Genoese railway hub, it was an autonomous municipality until 1926, when, together with eighteen other municipalities, it was incorporated into the municipality of Genoa to form the so-called Grande Genova. Toponym There are several hypotheses about the toponym "Rivarolo", which some have traced back to the position of the village on the bank of the Polcevera stream. This thesis contrasts with the fact that the oldest inhabited area, like most of the towns of Valpolcevera, rose further upstream, sheltered from the torrent's floods. Probably the origin of the name is to be found in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turin
Turin ( , Piedmontese language, Piedmontese: ; it, Torino ) is a city and an important business and cultural centre in Northern Italy. It is the capital city of Piedmont and of the Metropolitan City of Turin, and was the first Italian capital from 1861 to 1865. The city is mainly on the western bank of the Po (river), Po River, below its Susa Valley, and is surrounded by the western Alps, Alpine arch and Superga Hill. The population of the city proper is 847,287 (31 January 2022) while the population of the urban area is estimated by Larger Urban Zones, Eurostat to be 1.7 million inhabitants. The Turin metropolitan area is estimated by the Organisation for Economic Co-operation and Development, OECD to have a population of 2.2 million. The city used to be a major European political centre. From 1563, it was the capital of the Duchy of Savoy, then of the Kingdom of Sardinia ruled by the House of Savoy, and the first capital of the Kingdom of Italy from 1861 to 1865. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riviera Di Levante
The Italian Riviera or Ligurian Riviera ( it, Riviera ligure; lij, Rivêa lìgure) is the narrow coastal strip in Italy which lies between the Ligurian Sea and the mountain chain formed by the Maritime Alps and the Apennines. Longitudinally it extends from the border with France and the French Riviera (or ''Côte d'Azur'') near Ventimiglia (a former customs post) eastwards to Capo Corvo (also known as Punta Bianca) which marks the eastern end of the Gulf of La Spezia and is close to the regional border between Liguria and Tuscany. The Italian Riviera thus includes nearly all of the coastline of Liguria. Historically the "Riviera" extended further to the west, through what is now French territory as far as Marseille. The Italian Riviera crosses all four Ligurian provinces and their capitals Genoa, Savona, Imperia and La Spezia, with a total length of about 350 km (218 miles). It is customarily divided into a western section, the Ponente Riviera, and an eastern section, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Spezia
La Spezia (, or , ; in the local Spezzino dialect) is the capital city of the province of La Spezia and is located at the head of the Gulf of La Spezia in the southern part of the Liguria region of Italy. La Spezia is the second largest city in the Liguria region, after Genoa. Located roughly midway between Genoa and Pisa, on the Ligurian Sea, it is one of the main Italian military and commercial harbours and a major Italian Navy base. A popular seaside resort, it is also a significant railway junction, and is notable for its museums, for the Palio del Golfo rowing race, and for railway and boat links with the Cinque Terre. History La Spezia and its province have been settled since prehistoric times. In ancient Rome, Roman times the most important centre was Luni (Italy), Luni, not far from Sarzana. As the capital of the short-lived Niccolò Fieschi Signoria in the period between 1256 and 1273, La Spezia was inevitably linked with Genoese vicissitudes. After the fall of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mignanego
Mignanego is a ''comune'' (municipality) of the Metropolitan City of Genoa in the Italian region Liguria, located about north of Genoa in the northeastern part of the Val Polcevera valley. Geography Mignanego borders the following municipalities: Busalla, Campomorone, Fraconalto, Genoa, Savignone, Serra Riccò and Voltaggio (this one in the Province of Alessandria, Piedmont). It counts 4 (''frazioni''): Fumeri, Giovi, Montanesi, and Paveto as well as 8 località A ''località'' is an inhabited place in Italy that is not accorded a more significant distinction in administrative law such as a ''frazione'', ''comune'', ''municipio'', ''circoscrizione'', or ''quartiere''. The word is cognate to English ''loc ...: Barriera, Costagiutta, Migliarina, Pile, Ponte dell'Acqua, Ponterosso, Vetrerie, and Vittoria. Vetrerie is the most populated village and the municipal seat; it is sometimes identified simply as Mignanego. References External links Official website Cities and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First World War
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fighting occurring throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia. An estimated 9 million soldiers were killed in combat, plus another 23 million wounded, while 5 million civilians died as a result of military action, hunger, and disease. Millions more died in genocides within the Ottoman Empire and in the 1918 influenza pandemic, which was exacerbated by the movement of combatants during the war. Prior to 1914, the European great powers were divided between the Triple Entente (comprising France, Russia, and Britain) and the Triple Alliance (containing Germany, Austria-Hungary, and Italy). Tensions in the Balkans came to a head on 28 June 1914, following the assassination of Archduke Franz Ferdina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rheostat
A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat. The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name. Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick. Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load. Nomenclature There are a number of terms in the electronics industry used to describe certain types of potentiometers: * slide pot or slider pot: a potentiomete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cascade Motor Connection
An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor can therefore be made without electrical connections to the rotor. An induction motor's rotor can be either wound type or squirrel-cage type. Three-phase squirrel-cage induction motors are widely used as industrial drives because they are self-starting, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFD) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Squirrel-cage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
