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Class 777
The British Rail Class 777 ''METRO'' is a class of electric multiple unit passenger trains currently under construction by Swiss rolling stock manufacturer Stadler Rail, to be used on the Merseyrail network in the Liverpool City Region and the Wirral Peninsula. Ordered in 2016, construction of the units began in 2018. Deployment has been delayed, but , the trains are expected to enter service in 2023. The Class 777 will replace Merseyrail's current and units, which were built between 1978 and 1980. Seven units of the total 53 ordered are being configured as battery electric multiple units (BEMUs) for use on non-electrified lines, and will be designated subclass 777/1. History Background The replacement of the and fleet that has been in use on the Merseyrail commuter rail network since the late 1970s, had been proposed by Merseytravel as early as 2011. While the Class 507 and 508 are not the oldest electric multiple-units in use in Great Britain (which are the 1976-vint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merseyrail
Merseyrail is a commuter rail network serving the Liverpool City Region and adjacent areas of Cheshire and Lancashire. Merseyrail operates 66 railway stations across two lines – the Northern Line and Wirral Line, which are dedicated electrified lines that serve underground stations in the centres of Liverpool and Birkenhead. Merseyrail branding is also applied to stations and 'shared' services on the City Line, which are within the Liverpool City Region but operated by other train operating companies. The City Line services operate on the Liverpool to Manchester Lines and the Liverpool to Wigan Line using a mix of AC electric and diesel trains. The Merseyrail third rail network has 68 stations, 66 of which are managed by the company, and of routes, of which are underground. Prior to the COVID-19 pandemic in the United Kingdom, the network carried 31million passengers per year. The first part of the urban network was opened in 1977 by merging separate rail lines by const ... [...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 penetration fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Underground 1973 Stock
The London Underground 1973 Stock is a type of rolling stock used on the Piccadilly line of the London Underground. It was introduced into service in 1975 with the extension of the line to Hatton Cross, followed by a further extension to Heathrow Central in 1977. A total of 86 six-car trains were built. The trains were built by Metro-Cammell between 1974 and 1977, and were refurbished by Bombardier Transportation between 1996 and 2001. They are some of the oldest trains running on the Underground, and in Britain as a whole, second only to the 1972 Stock running on the Bakerloo line. History In the early 1970s London Transport placed an order for a new fleet of trains to replace the 1938 Stock and 1959 Stock vehicles which previously operated on the Piccadilly line. Built between 1974 and 1977 by Metro Cammell in Birmingham, the first unit entered service on 19 July 1975 and the last was introduced by 1977. The trains featured longer cars and larger door space than the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Underground 1972 Stock
The London Underground 1972 Stock is a type of rolling stock used on the London Underground. The 1972 Stock was originally ordered to make up the shortfall in trains on the Northern line's 1959 Tube Stock fleet, but is nowadays used on the Bakerloo line. Following the withdrawal of the British Rail Class 483 EMUs in 2021, these trains are the oldest EMUs in passenger service in Britain. A total of 63 seven-car trains were built in two separate batches. Construction A total of 252 cars were built by Metro-Cammell at Washwood Heath. In the early 1970s, the 1938 Tube stock on the Bakerloo and Northern line was life-expired and due for replacement. Tentative designs for a new Northern line fleet were abandoned when the go-ahead was given for the Piccadilly line to be extended to Heathrow Airport. That required a totally new fleet of trains to replace the 1959 stock then in use. The plan was made to transfer the 1959 trains to the Northern, to allow the worst of the 1938 stock ther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rail Class 313
The British Rail Class 313 is a dual-voltage electric multiple unit (EMU) train built by British Rail Engineering Limited's Holgate Road carriage works between February 1976 and April 1977. They were the first production units that were derived from British Rail's 1971 prototype suburban EMU design which, as the BREL 1972 family, eventually encompassed 755 vehicles over five production classes (313, 314, 315, 507 and 508). They were the first second-generation EMUs to be constructed for British Rail and the first British Rail units with both a pantograph for overhead lines and contact shoe equipment for supply. They were, additionally, the first units in Britain to employ multi-function automatic Tightlock couplers, which include electrical and pneumatic connections allowing the coupling and uncoupling of units to be performed unassisted by the driver whilst in the cab. The Class 313 units are the oldest EMUs on the National Rail network, at 46 years old; they entered ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battery Electric Multiple Unit
A battery electric multiple unit (BEMU), battery electric railcar or accumulator railcar is an electrically driven multiple unit or railcar whose energy is derived from rechargeable batteries driving the traction motors. Prime advantages of these vehicles is that they do not use fossil fuels such as coal or diesel fuel, emit no exhaust gases and do not require the railway to have expensive infrastructure like electric ground rails or overhead catenary. On the down side is the weight of the batteries, which raises the vehicle weight, and their range before recharging of between . Currently, battery electric units have a higher purchase price and running cost than petrol or diesel railcars. One or more charging stations are required along the routes they operate, unless operation is on a mixture of electrified and unelectrified track, with the batteries being charged from the electrified track. Battery technology has greatly improved over the past 20 years broadening the scope of u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liverpool City Region
The Liverpool City Region is a combined authority region of England, centred on Liverpool, incorporating the local authority district boroughs of Halton, Knowsley, Sefton, St Helens, and Wirral. The region is in the historic counties of Lancashire and Cheshire. The Liverpool City Region has a population of 1.5 million. However the metropolitan reach of the city is much wider with a population of 2.2 million Since 1 April 2014, the Liverpool City Region Combined Authority has become the top-tier administrative body for the local governance of the city region. Through the combined authority, the six districts pool their responsibilities over strategic policy areas such as economic development, transport, employment and skills, tourism, culture, housing, and physical infrastructure. No significant powers were devolved from central government. The region's economic development is also supported by the Liverpool City Region Local Enterprise Partnership (LEP), established in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Multiple Unit
An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a number of the carriages. An EMU is usually formed of two or more semi-permanently coupled carriages, but electrically powered single-unit railcars are also generally classed as EMUs. The great majority of EMUs are passenger trains, but versions also exist for carrying mail. EMUs are popular on commuter and suburban rail networks around the world due to their fast acceleration and pollution-free operation. Being quieter than diesel multiple units (DMUs) and locomotive-hauled trains, EMUs can operate later at night and more frequently without disturbing nearby residents. In addition, tunnel design for EMU trains is simpler as no provision is needed for exhausting fumes, although retrofitting existing limited-clearance tunnels to accommodate the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dellner Coupling
Dellner Couplers AB is a Swedish original equipment manufacturer of train connection systems as Railway coupling, couplers, Gangway connection, gangway systems and Yaw damper (railroad), dampers. The headquarter of the company is located in Vika, Sweden, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Train Control System
The European Train Control System (ETCS) is the signalling and control component of the European Rail Traffic Management System (ERTMS). It is a replacement for legacy train protection systems and designed to replace the many incompatible safety systems currently used by European railways. The standard was also adopted outside Europe and is an option for worldwide application. In technical terms it is a type of positive train control (PTC). ETCS is implemented with standard trackside equipment and unified controlling equipment within the train cab. In its advanced form, all lineside information is passed to the driver wirelessly inside the cab, removing the need for lineside signals watched by the driver. This will give the foundation for a later to be defined automatic train operation. Trackside equipment aims to exchange information with the vehicle for safely supervising train circulation. The information exchanged between track and trains can be either continuous or int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Train Protection & Warning System
The Train Protection & Warning System (TPWS) is a train protection system used throughout the British passenger main-line railway network, and in Victoria, Australia. The British Rail Safety and Standards Board's definition is: The purpose of TPWS is to stop a train by automatically initiating a brake demand, where TPWS track equipment is fitted, if the train has: *passed a signal at danger without authority *approached a signal at danger too fast *approached a reduction in permissible speed too fast *approached buffer stops too fast. TPWS is not designed to prevent SPADs but to mitigate the consequences of a SPAD, by preventing a train that has had a SPAD from reaching a conflict point after the signal. A standard installation consists of an on-track transmitter adjacent to a signal, activated when the signal is at danger. A train that passes the signal will have its emergency brake activated. If the train is travelling at speed, this may be too late to stop it before the point ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Warning System
The Automatic Warning System (AWS) was introduced in the 1950s in the United Kingdom to provide a train driver with an audible warning and visual reminder that they were approaching a distant signal at caution. Its operation was later extended to give warnings for; * A colour light signal displaying a double yellow (steady or flashing), single yellow or red aspect * A reduction in permissible speed * A temporary or emergency speed restriction * An automatic barrier crossing locally monitored (ABCL), an automatic open crossing locally monitored (AOCL), or an open crossing (OC). AWS was based on a 1930 system developed by Alfred Ernest Hudd and marketed as the "Strowger-Hudd" system. An earlier contact system, installed on the Great Western Railway since 1906 and known as automatic train control (ATC), was gradually supplanted by AWS within the Western Region of British Railways. Principles of operation Information is conveyed by magnetic fields to the moving train throu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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