British Rail Class 717 Desiro City | |
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![]() Great Northern Class 717 unit at Palmers Green | |
![]() The standard-class interior of a Class 717 unit | |
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 and South Western Railway.)
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