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Korail Class 5000
The Korail Class 311000 trains, some train of which were formerly identified as Korail Class 5000 trains, are commuter electric multiple units in South Korea used on Seoul Subway Line 1. Class 311000 trains were manufactured and delivered between 1996 and 2006, and again from 2012 to 2014 to expand service on the Gyeongbu Line and the Gyeongwon Line, and to replace older trains (1st and 2nd batch Class 1000 trains). As numbering spots in the 311000 series run out, the newest Class 311000 trains have begun to sport numbers in the 312000 series. Technical details Formation The Class 311000 cars are arranged in 10-car trains. Details of the car types of each train are listed below: 3110XX/3120XX – Tc (unpowered driving car with SIV, air compressor, and battery) 3111XX/3121XX – M (powered motor car with inverter and controller) 3112XX/3122XX – M' (powered motor car with pantograph, transformer, inverter, and controller) 3113XX/3123XX – T (unpowered "trailer" car) 3114XX/3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Singil Station
Singil Station (pronounced ''sin''-gill) is a station on the Seoul Subway The Seoul Metropolitan Subway is a metropolitan railway system consisting of 23 rapid transit, light metro, commuter rail and people mover lines located in northwest South Korea. The system serves most of the Seoul Metropolitan Area includin ...'s Line 1 and 5. The transfer distance between the platforms on Lines 1 and 5 are fairly long, around 260 metres. The Line 1 station is the first aboveground station in South Korea to have operating platform screen doors. References Seoul Metropolitan Subway stations Metro stations in Yeongdeungpo District Railway stations opened in 1996 {{Seoul-metro-station-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyeongbu Line
The Gyeongbu Line (''Gyeongbuseon'') is a railway line in South Korea and is considered to be the most important and one of the oldest ones in the country. It was constructed in 1905, connecting Seoul with Busan via Suwon, Daejeon, and Daegu. It is by far the most heavily travelled rail line in South Korea. All types of Korea Train Express, high-speed, express, local, and freight trains provide frequent service along its entire length. History In 1894–1895, the Empire of Japan and Qing Dynasty, Qing China fought the First Sino-Japanese War for influence over Korea. Following the war, Japan competed with the Russian Empire's railway expansion in Northeast Asia, which led it to seek the right from the Korean Empire to build a railway from Busan to Keijō. This railway line was intended by Japan to solidify its strategic positions against Russia, which it would later go to Russo-Japanese War, war. Surveying began in 1896, and in spite of local protests, the Korean Empire gav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oido Station
Oido Station is a subway station in Siheung, South Korea. It is the current southwestern terminus of Seoul Subway Line 4 located almost 30 kilometers southwest of Seoul, connecting Oido to other parts of Korea. A commuter rail trip between this station and Seoul Station takes over an hour, and a train servicing depot is located nearby. The name of the station was decided by the surrounding area Oido island. This station, along with Jeongwang Station to the southeast, serves the Sihwa Industrial District of southwestern Siheung. Beginning in June 2012, this station also became the southeastern terminus of the Suin Line, linking the city of Siheung to southern Incheon. Of the 4000 trains of the Seoul Metro that run between Danggogae and Oido, 451 and 471 trains and the 341000 trains of the Korea Railroad Corporation will end at the station. Structure It is equipped with a two-sided, four-sided, double-decker platform. Same as Sanggi Station and Wangsimni Station, both routes u ... [...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] |
Korail Class 351000
The Korail Class 351000 trains, formerly identified as Korail Class 2000 trains, are commuter electric multiple units in South Korea used on Suin-Bundang Line. Class 351000 trains were manufactured and delivered between 1993. Technical details Formation The Class 351000 cars are arranged in 6-car trains. Details of the car types of each train are listed below: 3510XX (ex-20XX) - Tc (trailer driving car with SIV, air compressor, and battery) 3511XX (ex-22XX) - M (motor car with inverter and controller) 3512XX (ex-23XX) - M' (motor car with pantograph, transformer, inverter, and controller) 3513XX (ex-24XX) - T (trailer car) 3514XX (ex-25XX) - M' 3519XX (ex-21XX) - Tc Electrical parts Trains 351-09, 351-11~351-12, 351-14, 351-17~351-18, and 351-20~351-28 use Toshiba GTO-based VVVF controls with active cooling, while all other trains use IGBT controls with passive cooling through a heat pipe. The trains are equipped with regenerative braking, reducing energy consumption ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korail Class 341000
The Korail Class 341000 trains, formerly identified as Korail Class 2000 trains, are commuter electric multiple units in South Korea used on Seoul Subway Line 4. Class 341000 trains were manufactured and delivered between 1993 and 1999 to expand service on the Gwacheon Line and the Ansan Line sections of Line 4. Technical details Formation The Class 341000 cars are arranged in 10-car trains. Details of the car types of each train are listed below: 3410XX (ex-20XX) - Tc (trailer driving car with SIV, air compressor, and battery) 3411XX (ex-22XX) - M (motor car with inverter and controller) 3412XX (ex-23XX) - M' (motor car with pantograph, transformer, inverter, and controller) 3413XX (ex-28XX) - T (trailer car) 3414XX (ex-24XX) - M' 3415XX (ex-25XX) - T' (trailer car with SIV, air compressor, and battery) 3416XX (ex-29XX) - T 3417XX (ex-26XX) - M 3418XX (ex-27XX) - M' 3419XX (ex-21XX) - Tc Electrical parts Trains 341-01~341-05, 341-08, 341-18~341-23, 341-25, and 341-26 use IG ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheelchairs
A wheelchair is a chair with wheels, used when walking is difficult or impossible due to illness, injury, problems related to old age, or disability. These can include spinal cord injuries ( paraplegia, hemiplegia, and quadriplegia), cerebral palsy, brain injury, osteogenesis imperfecta, motor neurone disease, multiple sclerosis, muscular dystrophy, spina bifida, and more. Wheelchairs come in a wide variety of formats to meet the specific needs of their users. They may include specialized seating adaptions, individualized controls, and may be specific to particular activities, as seen with sports wheelchairs and beach wheelchairs. The most widely recognized distinction is between motorized wheelchairs, where propulsion is provided by batteries and electric motors, and manual wheelchairs, where the propulsive force is provided either by the wheelchair user or occupant pushing the wheelchair by hand ("self-propelled"), by an attendant pushing from the rear using the handle(s), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regenerative Braking
Regenerative braking is an energy recovery mechanism that slows down a moving vehicle or object by converting its kinetic energy into a form that can be either used immediately or stored until needed. In this mechanism, the electric traction motor uses the vehicle's momentum to recover energy that would otherwise be lost to the brake discs as heat. This method contrasts with conventional braking systems. In those systems, the excess kinetic energy is converted to unwanted and wasted heat due to friction in the brakes, or with rheostatic brakes, where the energy is recovered by using electric motors as generators but is immediately dissipated as heat in resistors. In addition to improving the overall efficiency of the vehicle, regeneration can significantly extend the life of the braking system as the mechanical parts will not wear out quickly. General principle The most common form of regenerative brake involves an electric motor functioning as an electric generator. In elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heat Pipe
A heat pipe is a heat-transfer device that employs phase transition to transfer heat between two solid interfaces. At the hot interface of a heat pipe, a volatile liquid in contact with a thermally conductive solid surface turns into a vapor by absorbing heat from that surface. The vapor then travels along the heat pipe to the cold interface and condenses back into a liquid, releasing the latent heat. The liquid then returns to the hot interface through either capillary action, centrifugal force, or gravity and the cycle repeats. Due to the very high heat transfer coefficients for boiling and condensation, heat pipes are highly effective thermal conductors. The effective thermal conductivity varies with heat pipe length, and can approach for long heat pipes, in comparison with approximately for copper. Structure, design and construction A typical heat pipe consists of a sealed pipe or tube made of a material that is compatible with the working fluid such as copper ... [...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 switching ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VVVF
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 (electrical circuits), topology, to control associated voltage or electric current, 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 f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gate Turn-off Thyristor
A gate turn-off thyristor (GTO) is a special type of thyristor, which is a high-power (.e.g. 1200V AC) semiconductor device. It was invented by General Electric. GTOs, as opposed to normal thyristors, are fully controllable switches which can be turned on and off by their gate lead. Device description Normal thyristors (silicon-controlled rectifiers) are not fully controllable switches (a "fully controllable switch" can be turned on and off at will). Thyristors can only be turned on using the gate lead, but cannot be turned off using the gate lead. Thyristors are switched on by a gate signal, but even after the gate signal is de-asserted (removed, reverse biased), the thyristor remains in the on state until a turn-off condition occurs (which can be the application of a reverse voltage to the terminals or a decrease of the forward current below a certain threshold value known as the "holding current"). Thus, a thyristor behaves like a normal semiconductor diode after it is turned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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