British Rail Class 717 Desiro City | |
---|---|
In service | 28 September 2018 –present |
Manufacturer | Siemens Mobility |
Built at | Krefeld, Germany |
Family name | Desiro City |
Replaced | Class 313 |
Constructed | 2018 |
Number built | 25 |
Formation |
|
Fleet numbers | 717001–717025 |
Capacity | 362 seats |
Owners | Rock Rail [1] |
Operators | Great Northern |
Depots | Hornsey (London) |
Lines served | |
Specifications | |
Car body construction | Aluminium [2] |
Train length | 121.7 m (399 ft 3 in) |
Car length | 20.2 m (66 ft) |
Width | 2.80 m (9 ft 2 in) |
Floor height | 1.10 m (3 ft 7 in) |
Doors | Double-leaf pocket sliding, each 1,500 mm (59 in) wide(2 per side per car) |
Wheel diameter | 820–760 mm (32.28–29.92 in) (new–worn) [3] |
Wheelbase |
|
Maximum speed | 85 mph (137 km/h) |
Weight | 204 t (201 LT; 225 ST) |
Axle load |
|
Traction system | Siemens IGBT |
Power output | 1,200 kW (1,600 hp) at wheels |
Acceleration | 0.85 m/s2 (1.9 mph/s) |
Electric system(s) | |
Current collector(s) |
|
UIC classification |
|
Bogies | Siemens SGP SF7000 [4] |
Minimum turning radius | 120 m (390 ft) [3] |
Braking system(s) | Electro-pneumatic (disc) and regenerative |
Safety system(s) | |
Coupling system | Dellner |
Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
Notes/references | |
Sourced from [8] unless otherwise noted. |
The British Rail Class 717 Desiro City [9] is an electric multiple unit passenger train built by Siemens Mobility, currently operated by Govia Thameslink Railway on its Great Northern Hertford Loop and Welwyn stopping routes. Built to replace Class 313 trains on services into Moorgate, a total of 25 six-car units began entering regular service from March 2019. [10] [11] The units are similar to the Class 700s (in use with Thameslink) and the Class 707s (in use with Southeastern).
Upon winning the Thameslink, Southern and Great Northern franchise, Govia Thameslink Railway (GTR) announced that it would seek to procure new trains totalling 150 vehicles to replace the then-40-year-old Class 313 units operating on services to and from Moorgate. [12] In December 2015, GTR announced that it had selected Siemens to provide this new fleet, originally designated Class 713, [4] as a follow-on order from the main Class 700 order, with entry into service expected from March 2019. [13] The order was finalised in February 2016. [14] [15]
A significant difference between Class 717s and the earlier Class 700s is the provision of fold-down emergency doors at both ends of each train. These are required for emergency evacuation of passengers [9] while inside the deep-level Moorgate tunnels. [16]
Siemens began testing the Class 717 units in Germany during June 2018. [17]
The first unit operated a single preview service in late September 2018, with gradual introduction from the spring of 2019. [18] The final Class 313 service on Great Northern ran in September 2019, completing the fleet replacement by Class 717 units. [19]
In September 2021, the installation of European Train Control System (ETCS) on the Class 717 fleet was successfully tested on the Thameslink 'core' route between St Pancras International and Blackfriars stations in central London. [20] The success of the test allowed Govia Thameslink Railway to work towards enabling the use of ETCS in passenger service on the Northern City Line in November 2023, which will be followed by the decommissioning and removal of the existing conventional signalling system in 2024. [21] Further testing and implementation on other lines and routes is planned. [22]
In October 2022, testing started for the upgrade of the ETCS baseline from B3MR1 to B3R2, with dynamic testing planned for December 2023.
Class 717 trains generate electricity through regenerative braking. [23] The trains are also 20% lighter than their predecessors, making them more energy efficient. [24]
Class | Operator | Qty. | Year built | Cars per unit | Unit nos. |
---|---|---|---|---|---|
717 | Great Northern | 25 | 2018 | 6 | 717001–717025 |
Thameslink is a mainline route on the British railway network, running from Bedford, Luton, St Albans City, Peterborough, Welwyn Garden City, London Blackfriars and Cambridge via central London to Sutton, Orpington, Sevenoaks, Rainham, Horsham, Three Bridges, Brighton and East Grinstead. The network opened as a through service in 1988, with severe overcrowding by 1998, carrying more than 28,000 passengers in the morning peak. All the services are currently operated by Govia Thameslink Railway. Parts of the network, from Bedford to Three Bridges, run 24 hours a day, except on early Sunday mornings and during maintenance periods.
Gatwick Express is an express rail passenger service between London Victoria, Gatwick Airport, and Brighton in South East England. It is the brand name used by the Govia Thameslink Railway train operating company on the Gatwick Express route of the Thameslink, Southern and Great Northern franchise.
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The Northern City Line is a commuter railway line in England, which runs from Moorgate station to Finsbury Park in London with services running beyond. It is part of the Great Northern Route services, and operates as the south-eastern branch of the East Coast Main Line (ECML). It is underground from Moorgate to Drayton Park in Highbury, from which point it runs in a cutting until joining the ECML south of Finsbury Park. Its stations span northern inner districts of Greater London southwards to the City of London, the UK's main financial centre. Since December 2015, its service timetable has been extended to run into the late evenings and at weekends, meeting a new franchise commitment for a minimum of six trains per hour until 23:59 on weekdays and four trains per hour at weekends.
The Siemens Desiro is a family of diesel or electric multiple unit passenger trains developed by Siemens Mobility, a division of the German Siemens AG conglomerate. The main variants are the Desiro Classic, Desiro ML, Desiro UK and the later Desiro City, Desiro HC and Desiro RUS. The trains are mostly used for commuter and regional services, and their rapid acceleration makes them suitable for services with short distances between stations. The design is flexible, and has become common in many European countries.
The British Rail Class 360 is an electric multiple unit class that was built by Siemens Mobility on its Desiro platform between 2002 and 2005 for First Great Eastern and Heathrow Connect. The remaining members of the class are operated by East Midlands Railway.
The British Rail Class 365 Networker Express was a class of dual-voltage electric multiple unit passenger train built by ABB at Holgate Road Carriage Works in 1994 and 1995.
The British Rail Class 313 was 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. They were the first second-generation EMUs to be constructed for British Rail and the first British Rail units with both a pantograph for 25 kV 50 Hz AC overhead lines and contact shoe equipment for 750 V DC third rail 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.
Stevenage railway station serves the town of Stevenage in Hertfordshire, England. The station is around 44.4 kilometres north of London King's Cross on the East Coast Main Line. Stevenage is served and managed by Great Northern, who operate Thameslink stopping services southbound to King’s Cross via stations such as Welwyn Garden City and Potters Bar, to Brighton and Horsham via central London and Gatwick Airport and to Moorgate via Watton-at-Stone, Hertford North and Enfield Chase and services northbound to Cambridge and Peterborough. It is also frequently served by London North Eastern Railway, who operate fast non-stopping services southbound towards London and northbound towards cities including York, Leeds and Edinburgh. Hull Trains and Lumo operate very limited services from the station.
Thameslink was a train operating company in the United Kingdom owned by Govia that operated the Thameslink franchise between March 1997 and March 2006.
The Great Northern route, formerly known as Great Northern Electrics, is the name given to suburban rail services run on the southern end of Britain's East Coast Main Line and its associated branches. Services operate to or from London King's Cross and London Moorgate. Destinations include Hertford North, Welwyn Garden City, Stevenage, and Cambridge, and in peak hours, additional services run to Peterborough and King's Lynn. Services run through parts of Greater London, Hertfordshire, Bedfordshire, Cambridgeshire, and Norfolk.
The British Rail Class 700 is an electric multiple unit passenger train from the Desiro City family built by Siemens Mobility. It is capable of operating on 25 kV 50 Hz AC from overhead wires or 750 V DC from third rail. 115 trainsets were built between 2014 and 2018, for use on the Thameslink network, as part of the Thameslink Programme in the United Kingdom. As of 2021, they are operated by Govia Thameslink Railway.
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The British Rail Class 387 Electrostar is a type of electric multiple unit passenger train built by Bombardier Transportation. They are part of the Electrostar family of trains. A total of 107 units were built, with the first train entering service with Thameslink in December 2014. The trains are currently in service with Gatwick Express, Great Northern, Great Western Railway, Heathrow Express and Southern. The Class 387 is a variation of the Class 379 with dual-voltage capability which allows units to run on 750 V DC third rail, as well as use 25 kV AC OLE. The class were the final rolling stock orders from the Bombardier Electrostar family with 2,805 vehicles built over 18 years between 1999 and 2017.
Govia Thameslink Railway (GTR) is a British train operating company that operates the TSGN rail franchise. Within the franchise, GTR runs trains under the sub-brands: Thameslink, Great Northern, Southern, and Gatwick Express. GTR is a subsidiary of Govia, which is itself a joint venture between the British Go-Ahead Group (65%) and French company Keolis (35%).
The British Rail Class 707 is an electric multiple unit passenger train built by Siemens Mobility on its Desiro City platform, and operated in England by Southeastern. The units were previously operated by South Western Railway.
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