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
Motor bogies: 2,200 mm (87 in)
Trailer bogies: 2,100 mm (83 in)[3]
Maximum speed
85 mph (137 km/h)
Weight
204 t (201 LT; 225 ST)
Axle load
Motor bogies: 15.5 t (15.3 LT; 17.1 ST)
Trailer bogies: 14.5 t (14.3 LT; 16.0 ST)[3]
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)
25 kV 50 Hz AC overhead
750 V DC third rail
Current collector(s)
Pantograph (AC)
Contact shoe (DC)
UIC classification
Bo′Bo′+2′2′+2′2′+Bo′Bo′+2′2′+Bo′Bo′
Bogies
Siemens SGP SF7000[4]
Minimum turning radius
120 m (390 ft)[3]
Braking system(s)
Electro-pneumatic (disc) and regenerative
Safety system(s)
AWS
ETCS[5]
TPWS
Tripcock[6][note 1]
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.)
^Sherratt, P., ed. (2023). "ROSCO Fleets". Modern Railways: Review 2023. Stamford: Key Publishing. pp. 18–19. ISBN 978-1-80282-569-5.
^Desiro City Electrical Multiple Unit for Thameslink(PDF) (2014 ed.). Berlin: Siemens Mobility. Archived (PDF) from the original on 29 October 2020.
^ abcdSF7000: Bogie-platform for electrical multiple units(PDF) (05/2020 ed.). Graz: Siemens Mobility Austria. Art. No. MORS-B10032-00. Archived (PDF) from the original on 30 September 2020.
^Desiro City - Evolution in Motion(PDF) (2016 ed.). München: Siemens Mobility. Archived (PDF) from the original on 20 November 2020.
^"Digital signalling for East Coast main line tested on Thameslink". Rail Insider. Business Daily Group. 21 September 2021. Retrieved 20 November 2021.
^"Class 717 Production Passes Halfway". Modern Railways. Stamford: Key Publishing. 24 May 2018. Retrieved 18 October 2022.
^Clinnick, R. (April 2023). "Modernising the Moorgate branch". Rail Express. No. 323. Horncastle: Mortons Media Group. p. 87. ISSN 1362-234X.
^Desiro City Class 717 Electrical Multiple Units for Govia Thameslink Railway(PDF) (2018 ed.). München: Siemens Mobility. Art. No. MOML-T10055-00-7600. Archived from the original (PDF) on 30 November 2020.
^Clinnick, R. (8 June 2016). "New Govia Thameslink Railway trains to be Class 717s". Rail Magazine. Peterborough: Bauer Consumer Media. Retrieved 9 June 2016.
^Clinnick, R. (25 March 2019). "Great Northern Class 717s finally enter passenger service". Rail Magazine. Peterborough: Bauer Consumer Media. Retrieved 12 June 2023.
^"New trains for Moorgate services". Great Northern. Newcastle upon Tyne: Govia Thameslink Railway. Archived from the original on 27 March 2019.
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