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SL C20
The SL C20 is a type of subway train used in the Stockholm metro, Sweden. Between 1997 and 2004, 271 3-car sets, numbered 2000–2270, were delivered to Stockholm by the former Kalmar Verkstad, owned by Adtranz, later acquired by Bombardier Transportation. The C20 is a completely new design and therefore is not compatible with other train types in the system. At , each carriage is longer than the previous train types. To save cost and weight, each unit has only four bogies. The middle car has two bogies. The end parts consist of one bogie each and are connected to the central portion via a semi-trailer-direction. Trolley subframes are made of stainless steel, and are less susceptible to corrosion. When the C20 was sold as the ''Vagn 2000'' ( en, Wagon 2000), it was marketed as the subway car of the future. All C20 coaches have been given their own names, all proposed by private individuals. Many of the names are linked to Stockholm; for example, coach no. 2001 was christened B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sankt Eriksplan Metro Station
Sankt Eriksplan metro station is a station on the Green line of the Stockholm metro. It is entirely underground, and is located in the district of Vasastaden, which is in the borough of Norrmalm in central Stockholm. The station has a single island platform, some below street level, and is accessed via a pair of ticket halls. One ticket hall is under Sankt Eriksplan itself, and the other under the intersection of and . Both ticket halls are linked to the surface by entrance pavilions containing stairs and lifts. The distance to Slussen is . The station was inaugurated on 26 October 1952 as a part of the section of line between Hötorget and Vällingby Vällingby () is a suburban district in Västerort in the western part of Stockholm Municipality, Sweden. History The agricultural land where the modern suburb now stands, has a history stretching some 2,000 years back (i.e. at least twice .... Gallery File:St Eriksplan Metro station a.jpg, One of the entrances, 2009 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storstockholms Lokaltrafik
Storstockholms Lokaltrafik, or more formally Aktiebolaget Storstockholms Lokaltrafik (Greater Stockholm Local Transit Company), is the organisation running all of the land based public transport systems in Stockholm County. It was previously known as Stockholms Lokaltrafik and is commonly referred to as SL. History SL has its origins in AB Stockholms Spårvägar (SS), a city-owned public transit company which started in 1915 by the City of Stockholm with the aim to deprivatize the two separate private tramway networks into one more efficient company. SS would in the late 1920s also acquire private motorbus companies. The first part of the Stockholm Metro was opened in 1950. SS was renamed to SL in January 1967 when the metro, local train, and bus operations in Stockholm County were merged into a single organisation under the supervision of Stockholm County Council. The different mass transit systems within the County had until then been run by different organisations, Sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stockholm Metro
The Stockholm metro ( sv, Stockholms tunnelbana) is a rapid transit system in Stockholm, Sweden. The first line opened in 1950, and today the system has 100 stations in use, of which 47 are underground and 53 above ground. There are three coloured lines, as shown on the tube maps, which form seven numbered routes with different termini. Routes numbered 17, 18 and 19 (green line), 13 and 14 (red line) and 10 and 11 (blue line) all go through the centre of the city, resulting in a very centralized system. All three lines and seven routes interchange at T-Centralen station. Apart from this, there are three other interchange between lines, at Fridhemsplan, Slussen and Gamla stan stations. The metro is equipped with ticket gates. Single tickets may be bought in advance, typically in privately owned smaller shops, on the web, or at ticket machines that are available in all underground stations and on several tram, bus, or boat stops. Tickets are also available at the ticket booth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapid Transit
Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be called a subway, tube, or underground. Unlike buses or trams, rapid transit systems are railways (usually electric) that operate on an exclusive right-of-way, which cannot be accessed by pedestrians or other vehicles, and which is often grade-separated in tunnels or on elevated railways. Modern services on rapid transit systems are provided on designated lines between stations typically using electric multiple units on rail tracks, although some systems use guided rubber tires, magnetic levitation (''maglev''), or monorail. The stations typically have high platforms, without steps inside the trains, requiring custom-made trains in order to minimize gaps between train and platform. They are typically integrated with other public tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dellner
Dellner Couplers AB is a Swedish original equipment manufacturer of train connection systems as couplers, gangway systems and dampers. The headquarter of the company is located in Vika in the Falun Municipality. Dellner is owned by the investment organisation EQT Partners and has 22 subsidiaries worldwide with more than 1,200 employees. History Dellner was founded in 1941 by the Swedish engineer Jan Dellner. The first customer was Swedish State Railways, for whom the Engineering Bureau Dellner produced automatic couplers. In the following years, the company, based in the small town of Vika in central Sweden, expanded its business and supplied automatic couplers to numerous customers in Europe, such as the Warsaw Metro, Paris Metro, SNCF, Rome Metro and Italian State Railways. From 1982 onwards, train couplers were also supplied to countries outside Europe. At that time Dellner had a total of 80 employees in Sweden, the US and Canada. From 1984 Dellner was the first manufact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Train Control
Automatic train control (ATC) is a general class of train protection systems for railways that involves a speed control mechanism in response to external inputs. For example, a system could effect an emergency brake application if the driver does not react to a signal at danger. ATC systems tend to integrate various cab signalling technologies and they use more granular deceleration patterns in lieu of the rigid stops encountered with the older automatic train stop (ATS) technology. ATC can also be used with automatic train operation (ATO) and is usually considered to be the safety-critical part of a railway system. Over time, there have been many different safety systems labelled as "automatic train control". The first experimental apparatus was installed on the Henley branch line in January 1906 by the Great Western Railway, although it would now be referred to as an automatic warning system (AWS) because the driver retained full command of braking. The term is especial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Current Collector
Electric current collectors are used by trolleybuses, trams, electric locomotives or EMUs to carry electrical power from overhead lines, electrical third rails, or ground-level power supplies to the electrical equipment of the vehicles. Those for overhead wires are roof-mounted devices, those for rails are mounted on the bogies. Typically, electric current connectors have one or more spring-loaded arms that press a collector or contact shoe against the rail or overhead wire. As the vehicle moves, the contact shoe slides along the wire or rail to draw the electricity needed to run the vehicle's motor. The current collector arms are electrically conductive but mounted insulated on the vehicle's roof, side or base. An insulated cable connects the collector with the switch, transformer or motor. The steel rails of the tracks act as the electrical return. Electric vehicles that collect their current from an overhead line system use different forms of one- or two-arm pantogra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicon Carbide
Silicon carbide (SiC), also known as carborundum (), is a hard chemical compound containing silicon and carbon. A semiconductor, it occurs in nature as the extremely rare mineral moissanite, but has been mass-produced as a powder and crystal since 1893 for use as an abrasive. Grains of silicon carbide can be bonded together by sintering to form very hard ceramics that are widely used in applications requiring high endurance, such as car brakes, car clutches and ceramic plates in bulletproof vests. Large single crystals of silicon carbide can be grown by the Lely method and they can be cut into gems known as synthetic moissanite. Electronic applications of silicon carbide such as light-emitting diodes (LEDs) and detectors in early radios were first demonstrated around 1907. SiC is used in semiconductor electronics devices that operate at high temperatures or high voltages, or both. Natural occurrence Naturally occurring moissanite is found in only minute quantities in cer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable-frequency Drive
A variable-frequency drive (VFD) is a type of motor drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and, depending on topology, to control associated voltage or current variation., quote is per definition on p. 4 of NEMA Standards Publication ICS 7.2-2021. VFDs may also be known as 'AFDs' (adjustable-frequency drives), 'ASDs' (adjustable-speed drives), 'VSDs' (variable-speed drives), 'AC drives', 'micro drives', 'inverter drives' or, simply, 'drives'. VFDs are used in applications ranging from small appliances to large compressors. An increasing number of end users are showing greater interest in electric drive systems due to more stringent emission standards and demand for increased reliability and better availability. Systems using VFDs can be more efficient than those using throttling control of fluid flow, such as in systems with pumps and damper control for fans. However, the global market penetratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insulated-gate Bipolar Transistor
An insulated-gate bipolar transistor (IGBT) is a three-terminal power semiconductor device primarily used as an electronic switch, which, as it was developed, came to combine high efficiency and fast switching. It consists of four alternating layers (P–N–P–N) that are controlled by a metal–oxide–semiconductor (MOS) gate structure. Although the structure of the IGBT is topologically the same as a thyristor with a "MOS" gate ( MOS-gate thyristor), the thyristor action is completely suppressed, and only the transistor action is permitted in the entire device operation range. It is used in switching power supplies in high-power applications: variable-frequency drives (VFDs), electric cars, trains, variable-speed refrigerators, lamp ballasts, arc-welding machines, induction hobs, and air conditioners. Since it is designed to turn on and off rapidly, the IGBT can synthesize complex waveforms with pulse-width modulation and low-pass filters, so it is also used in switchin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nyboda Depot
Nyboda depot (in Swedish: Nybodadepån or Nybodahallen) is a garage/depot for subway trains and buses of Storstockholms Lokaltrafik (SL), located in Liljeholmen, Stockholm Municipality, along Hägerstensvägen and under Essingeleden. Nybodadepån is connected with Liljeholmen metro station via a bridge over Hägerstensvägen and a tunnel in the mountain under . Nybodadepån started operations for buses and trams in 1945, then called ''Brännkyrkahallen''. 1963–64,Havers, Harold Charles Percival. ''Underground Railways of the World: Their History and Development''. Temple P, 1966. Page 176. it was rebuilt to be adapted for the cars of Stockholm Metro The Stockholm metro ( sv, Stockholms tunnelbana) is a rapid transit system in Stockholm, Sweden. The first line opened in 1950, and today the system has 100 stations in use, of which 47 are underground and 53 above ground. There are three col .... It could house 30 railway cars on four tracks in a bus garage and another ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
