|
South African Class 19E
The Transnet Freight Rail Class 19E of 2009 is a South African electric locomotive. In 2009, Transnet Freight Rail placed the first of 110 Class 19E single-cab dual-voltage 3 kV DC and 25 kV AC electric locomotives with a Bo-Bo wheel arrangement in service on the Coalink line from Ermelo to Richards Bay. Manufacturer The dual-voltage 3 kV DC and 25 kV AC Class 19E is the product of a joint venture by Mitsui for the design, Toshiba for the electrical equipment, Union Carriage and Wagon (UCW) for the bodies and the RSD division of DCD-Dorbyl for the bogies. It was locally manufactured by UCW in Nigel, Gauteng. Road testing on the Class 19E started in August 2008. Characteristics The Class 19E was the first South African AC locomotive to incorporate regenerative as well as rheostatic electric braking. While regenerative braking was used on all South African mainline locomotives dating back all the way to the introduction of the Class 1E in 1925, the notable exception being the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsui
is one of the largest '' keiretsu'' in Japan and one of the largest corporate groups in the world. The major companies of the group include Mitsui & Co. ( general trading company), Sumitomo Mitsui Banking Corporation, Nippon Paper Industries, Pokka Sapporo Holdings, Toray Industries, Mitsui Chemicals, Isetan Mitsukoshi Holdings, Sumitomo Mitsui Trust Holdings, Mitsui Engineering & Shipbuilding, Mitsui O.S.K. Lines and Mitsui Fudosan. History Edo period origins Founded by Mitsui Takatoshi (1622–1694), who was the fourth son of a shopkeeperRíkarðsson, Árni (2020). ''Origins of the Zaibatsu conglomerates''. Bachelor’s thesis. Supervisor: Kristín Ingvarsdóttir. Reykjavik, University of Iceland, p. 15. in Matsusaka, in what is now today's Mie prefecture. From his shop, called Echigoya (越後屋), Mitsui Takatoshi's father originally sold miso and ran a pawn shop business. Later, the family would open a second shop in Edo (now called Tokyo). Takatoshi moved t ... [...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] |
Mpumalanga
Mpumalanga () is a province of South Africa. The name means "East", or literally "The Place Where the Sun Rises" in the Swazi, Xhosa, Ndebele and Zulu languages. Mpumalanga lies in eastern South Africa, bordering Eswatini and Mozambique. It constitutes 6.5% of South Africa's land area. It shares borders with the South African provinces of Limpopo to the north, Gauteng to the west, the Free State to the southwest, and KwaZulu-Natal to the south. The capital is Mbombela. Mpumalanga was formed in 1994, when the area that was the Eastern Transvaal was merged with the former bantustans KaNgwane, KwaNdebele and parts of Lebowa and Gazankulu. Although the contemporary borders of the province were only formed at the end of apartheid, the region and its surroundings has a history that extends back thousands of years. Much of its history, and current significance is as a region of trade. History Precolonial Era Archeological sites in the Mpumalanga region indicate settlement b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class 21E
The Transnet Freight Rail Class 21E of 2014 is a South African electric locomotive. On 16 September 2014, the first of the Class 21E dual voltage electric locomotives for Transnet Freight Rail was rolled out at the CSR Zhuzhou Electric Locomotive Company in China. Two of these locomotives were built in China with another 38 to follow, while the rest were built in South Africa. [http://www.csrgc.com.cn/g1571/s4018/t251220.aspx China South Locomotive and export electric locomotive off the assembly line in South Africa (As translated by TranStar, powered by Google Translate) - CSR Zhushou Electric Locomotive Co. Ltd., 17 September 2014] [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class 20E
The Transnet Freight Rail Class 20E of 2013 is a South African electric locomotive. In early August 2013 the first of ninety-five Class 20E dual-voltage electric locomotives for Transnet Freight Rail was lowered onto its bogies for the first time. Ten of these locomotives were built by the Zhuzhou Electric Locomotive Company in China while the rest were built locally. Manufacturer The first ten of ninety-five 3 kV DC and 25 kV AC dual voltage Class 20E electric locomotives for Transnet Freight Rail were built in China by Zhuzhou Electric Locomotive Company, a subsidiary of the China South Locomotive and Rolling Stock Corporation (CSR), China's leading train m ...[...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] |
Dynamic Braking
Dynamic braking is the use of an electric traction motor as a generator when slowing a vehicle such as an electric or diesel-electric locomotive. It is termed " rheostatic" if the generated electrical power is dissipated as heat in brake grid resistors, and " regenerative" if the power is returned to the supply line. Dynamic braking reduces wear on friction-based braking components, and regeneration lowers net energy consumption. Dynamic braking may also be used on railcars with multiple units, light rail vehicles, electric trams, trolleybuses, and electric and hybrid electric automobiles. Principle of operation Converting electrical energy to the mechanical energy of a rotating shaft (electric motor) is the inverse of converting the mechanical energy of a rotating shaft to electrical energy (electric generator). Both are accomplished through the interactions of armature windings with a (relatively) moving external magnetic field, with the armature connected to an electrical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class 18E, Series 1
The Spoornet Class 18E, Series 1 of 2000 is a South African electric locomotive. Beginning in 2000, Spoornet embarked on a program to rebuild Class 6E1 locomotives to Class 18E, Series 1 locomotives. Most of the Class 6E1s which had previously been reclassified or modified to Class 16E or Class 17E respectively were rebuilt to Class 18E as well. Manufacturer The 3 kV DC Class 6E1 electric locomotive was built for the South African Railways (SAR) by Union Carriage & Wagon (UCW) in Nigel, Transvaal, with the electrical equipment supplied by the General Electric Company (GEC). Eleven series of Class 6E1 were delivered between 1969 and 1984, with altogether 960 units built. UCW did not allocate builder's numbers to the locomotives which it built for the SAR, but used the SAR unit numbers for their record keeping. Rebuilding The rebuilding to Class 18E, Series 1 was done by Transwerk, later renamed Transnet Rail Engineering (TRE) and then Transnet Engineering (TE), at its Koe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class 1E
The South African Railways Class 1E of 1925 was an electric locomotive. Between 1925 and 1945, the South African Railways purchased 172 Class 1E electric locomotives, spread over seven orders. They were the first mainline electric locomotives to be introduced in South Africa.Espitalier, T.J.; Day, W.A.J. (1946). ''The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued).'' South African Railways & Harbours Magazine, March 1946. pp. 205-208.South African Railways Index and Diagrams Electric and Diesel Locomotives, 610 mm and 1065 mm Gauges, Ref LXD 14/1/100/20, 28 January 1975, as amended Railways electrification In 1920, following a report and recommendations on electric traction by consulting engineers Merz & McLellan of London, the South African Parliament authorised the electrification of the lines between Durban and Pietermaritzburg in Natal and between Cape Town and Simon's Town on the Cape Peninsula at a cost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gauteng
Gauteng ( ) is one of the nine provinces of South Africa. The name in Sotho-Tswana languages means 'place of gold'. Situated on the Highveld, Gauteng is the smallest province by land area in South Africa. Although Gauteng accounts for only 1.5% of the country's land area, it is home to more than a quarter of its population (26%). Highly urbanised, the province contains the country's largest city, Johannesburg, which is also one of the largest cities in the world. Gauteng is the wealthiest province in South Africa and is considered as the financial hub of not only South Africa but the entire African continent, mostly concentrated in Johannesburg. It also contains the administrative capital, Pretoria, and other large areas such as Midrand, Vanderbijlpark, Ekurhuleni and the affluent Sandton. Gauteng is the most populous province in South Africa with a population of approximately 16.1 million people according to mid year 2022 estimates. Etymology The name ''Gauteng'' is derived ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DCD-Dorbyl
DCD Group Ltd. (formerly DCD-Dorbyl Ltd.) is a South African manufacturer and engineering company focusing on the rail, mining, energy, defence, and marine sectors. It is based in Vereeniging, South Africa. DCD Group specializes in engineering projects, including rail and military vehicle engineering, roller manufacturing, marine engineering, and mine engineering. DCD Protected Mobility manufactures the Husky VMMD, a counter-IED MRAP currently in use with the United States Army, the United States Marine Corps, and the South African Defence Force. DCD Group was originally established in 1946 as DCD-Dorbyl Ltd., a merger of Dorman Long and Vanderbijl Engineering Corporation. It rebranded in 2012 as DCD Group Ltd. In February 2010, Westinghouse and DCD-Dorbyl announced cooperation on creating a plant for building modules for AP1000 reactor The AP1000 is a nuclear power plant designed and sold by Westinghouse Electric Company. The plant is a pressurized water reactor with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toshiba
, commonly known as Toshiba and stylized as TOSHIBA, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. Its diversified products and services include power, industrial and social infrastructure systems, elevators and escalators, electronic components, semiconductors, hard disk drives (HDD), printers, batteries, lighting, as well as IT solutions such as quantum cryptography which has been in development at Cambridge Research Laboratory, Toshiba Europe, located in the United Kingdom, now being commercialised. It was one of the biggest manufacturers of personal computers, consumer electronics, home appliances, and medical equipment. As a semiconductor company and the inventor of flash memory, Toshiba had been one of the top 10 in the chip industry until its flash memory unit was spun off as Toshiba Memory, later Kioxia, in the late 2010s. The Toshiba name is derived from its former name, Tokyo Shibaura Denki K.K. (Tokyo Shibaura Elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
