British Rail Class 717

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British Rail Class 717
Desiro City
Great Northern Class 717 Desiro City at Palmers Green June 2019 cropped.jpg
Great Northern Class 717 unit at Palmers Green
GTR Class 717 Interior.jpg
The standard-class interior of a Class 717 unit
In service28 September 2018 present
Manufacturer Siemens Mobility
Built at Krefeld, Germany
Family name Desiro City
Replaced Class 313
Constructed2018
Number built25
Formation
  • 6 cars per unit:
  • DMOS-TOS-TOS(L)W-MOS-PTOS-DMOS
Fleet numbers717001–717025
Capacity362 seats
Owners Rock Rail [1]
Operators Great Northern
Depots Hornsey (London)
Lines served
Specifications
Car body construction Aluminium [2]
Train length121.7 m (399 ft 3 in)
Car length20.2 m (66 ft)
Width2.80 m (9 ft 2 in)
Floor height1.10 m (3 ft 7 in)
DoorsDouble-leaf pocket sliding, each 1,500 mm (59 in) wide(2 per side per car)
Wheel diameter820–760 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 speed85 mph (137 km/h)
Weight204 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 systemSiemens IGBT
Power output1,200 kW (1,600 hp) at wheels
Acceleration 0.85 m/s2 (1.9 mph/s)
Electric system(s)
Current collector(s)
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)
Coupling system Dellner
Track gauge 1,435 mm (4 ft 8+12 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).

Contents

History

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]

Operation

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-cab signalling

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.

Environment

Class 717 trains generate electricity through regenerative braking. [23] The trains are also 20% lighter than their predecessors, making them more energy efficient. [24]

Fleet details

ClassOperatorQty.Year builtCars per unitUnit nos.
717 Great Northern 2520186717001717025

Illustration

Great Northern Class 717.png
Side-profile illustration of a Great Northern Class 717 unit

Notes

  1. Tripcocks were removed in May 2023 following the May 2022 completion of the Northern City Line tripcock-to-TPWS conversion programme. [7]

Related Research Articles

<span class="mw-page-title-main">Thameslink</span> Mainline route in the British railway system

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.

<span class="mw-page-title-main">Gatwick Express</span> British high-frequency rail passenger service

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.

<span class="mw-page-title-main">Southern (Govia Thameslink Railway)</span> British train operating company

Southern is the brand name used by the Govia Thameslink Railway (GTR) train operating company on the Southern routes of the Thameslink, Southern and Great Northern franchise in England. It is a subsidiary of Govia, a joint venture between transport groups Go-Ahead and Keolis, and has operated the South Central franchise since August 2001 and the Gatwick Express service since June 2008. When the passenger rail franchise was subsumed into GTR, Southern was split from Gatwick Express and the two became separate brands, alongside the Thameslink and Great Northern brands.

<span class="mw-page-title-main">Northern City Line</span> Partly underground railway line in London

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.

<span class="mw-page-title-main">Siemens Desiro</span> Family of diesel and electric multiple units from Siemens

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.

<span class="mw-page-title-main">British Rail Class 360</span> British electric passenger train

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.

<span class="mw-page-title-main">British Rail Class 365</span> British electric passenger trains

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.

<span class="mw-page-title-main">British Rail Class 313</span> 1976 British electric trains

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.

<span class="mw-page-title-main">Stevenage railway station</span> Railway station in Hertfordshire, England

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.

<span class="mw-page-title-main">Thameslink (train operating company, 1997–2006)</span>

Thameslink was a train operating company in the United Kingdom owned by Govia that operated the Thameslink franchise between March 1997 and March 2006.

<span class="mw-page-title-main">Great Northern route</span> Suburban rail service in Great Britain

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.

<span class="mw-page-title-main">British Rail Class 700</span> Electric multiple unit in use on Thameslink

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.

<span class="mw-page-title-main">British Rail Class 379</span> Class of British electric multiple unit

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<span class="mw-page-title-main">Thameslink, Southern and Great Northern franchise</span> British railway management franchise

Thameslink, Southern and Great Northern (TSGN) is a management contract for the provision of passenger services on the Thameslink and Great Northern routes to Bedford, Luton, Peterborough, King's Lynn, Cambridge, London King's Cross, London Moorgate, Sutton, Wimbledon and Brighton, as well as the whole Southern network and the jointly operated First Capital Connect Southeastern services, which were added to the franchise on 25 July 2015, with the Southern and Gatwick Express brands retained.

<span class="mw-page-title-main">British Rail Class 387</span> Class of British Electrostar electric multiple units

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<span class="mw-page-title-main">Govia Thameslink Railway</span> British train operating company

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%).

<span class="mw-page-title-main">British Rail Class 707</span> Electric multiple unit train built by Siemens

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The British Rail Class 799 HydroFLEX is a prototype class of bi-mode multiple unit adapted from Class 319 electric multiple units (319001/382). The existing 25 kV AC and 750 V DC equipment has been retained with a hydrogen fuel cell added, currently taking up one of the carriages.

Rock Rail is a British rolling stock company (ROSCO). It was established by Rock Infrastructure in 2014, and was structured as a subsidiary of the firm during July 2016.

References

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  3. 1 2 3 4 SF7000: 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.
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