Interior of a Southern refurbished Class 313/2 unit
In service
1976–2023
Manufacturer
British Rail Engineering Limited
Built at
Holgate Road Works, York
Family name
BREL 1972
Replaced
Class 105
Class 106
Class 501
Constructed
1976–1977
Refurbished
1997–2001 (Silverlink)
1999–2003 (WAGN)
2010–2011 (Southern)
Scrapped
2019, 2023
Number built
64[1]
Number preserved
2
Number scrapped
62
Successor
Class 378 (London Overground)
Class 717 (Great Northern)
Class 377 (Southern)[2]
Formation
3 cars per unit:
DMSO-PTSO-BDMSO
Diagram
DMSO vehicles: EA204
TSO vehicles: EH210
BDMSO vehicles: EI201
Capacity
As built: 232 seats
Great Northern: 231 seats
Overground: 202 seats
Silverlink: 228 seats
Southern: 202 seats
Owners
Beacon Rail[3]
Eversholt Rail Group[4]
Operators
British Rail
Network Rail
Network SouthEast
Silverlink
London Overground
West Anglia Great Northern
First Capital Connect
Great Northern
Southern
Depots
Lovers Walk (Brighton)
Clacton[4]
Lines served
East Coastway
Seaford Branch
West Coastway
Specifications
Car body construction
Steel underframe with aluminium body and roof [note 1]
Car length
DM vehs.: 19.800 m (64 ft 11.5 in)
Trailers: 19.920 m (65 ft 4.3 in)
Width
2.820 m (9 ft 3.0 in)
Height
3.582 m (11 ft 9.0 in)
Floor height
1.146 m (3 ft 9.1 in)
Doors
Double-leaf pocket sliding, each 1.288 m (4 ft 2.7 in) wide(2 per side per car)
Wheel diameter
840 mm (33 in) new[6]
Wheelbase
Over bogie centres: 14.170 m (46 ft 5.9 in)
Maximum speed
75 mph (120 km/h)
Weight
DMSO vehs.: 35.87 t (35.30 LT; 39.54 ST)
PTSO vehs.: 31.28 t (30.79 LT; 34.48 ST)
BDMSO vehs.: 37.55 t (36.96 LT; 41.39 ST)
Total: 104.70 t (103.05 LT; 115.41 ST)[6]
Traction motors
8 × GEC G310AZ (82 kW (110 hp) each,4 per motor car)
Power output
656 kW (880 hp)
Tractive effort
90.7 kN (20,400 lbf) starting[6]
Acceleration
0.79 m/s2 (2.6 ft/s2)[7]
Deceleration
0.92 m/s2 (3.0 ft/s2)[7]
Electric system(s)
25 kV 50 Hz AC overhead[note 2]
750 V DC third rail
Current collector(s)
Pantograph (AC)
Contact shoe (DC)
UIC classification
Bo′Bo′+2′2′+Bo′Bo′
Bogies
BREL BX1
Minimum turning radius
70.4 m (231 ft 0 in)
Braking system(s)
Electro-pneumatic (disc) and rheostatic ('Westcode' three-step)[8]
Safety system(s)
AWS
TPWS
Tripcock (NCL units only)
Coupling system
Tightlock
Multiple working
Within class
Track gauge
1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references
Specifications as at August 1982[5] except where otherwise noted.
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 (313, 314, 315, 507 and 508).[9] 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.[10] 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 were the oldest EMUs operating on the National Rail network in Great Britain prior to their withdrawal in 2023, having entered service in 1976.[11] However, the even older 1972 Stock and 1973 Stock are still in service on London Underground.
^"PEP-talk: the BR second generation EMU". D&E Files. Rail Express Modeller. No. 222. Horncastle: Mortons Media Group. October 2022. pp. M14–M15. ISSN 1362-234X.
^Griffiths, E. (9 March 2023). "Class 313 put out to pasture". Rail Technology Magazine. Manchester: Cognitive Publishing.
^Russell, D. (December 2022). "Class 313". Units. Rail Express. No. 319. Horncastle: Mortons Media Group. p. 27. ISSN 1362-234X.
^ abc"Southern '313s' – is the end now in sight?". Rail Magazine. No. 977. Peterborough: Bauer Consumer Media. 22 February 2023. pp. 38–43.
^ abVehicle Diagram Book No. 210 for Electric Multiple Units (including A.P.T.)(PDF). Derby: Mechanical & Electrical Engineering Department, British Railways Board. August 1982. EA204, EH210, EI201 (in work pp. 12–13, 278–279, 386–387). Archived from the original (PDF) on 21 January 2015. Retrieved 25 April 2023 – via Barrowmore MRG.
^ abcBull & Cronin 1978a, p. 77, Appendix D.
^ abBull & Cronin 1978a, p. 71, Class 313 EMU: Performance Characteristics.
^Bull & Cronin 1978a, p. 72, Class 313 EMU: Brake System.
^"The twilight zone". Railways Illustrated. No. 249. November 2023. pp. 50–53.
^Haresnape, B.; Swain, A. (1989). Third Rail DC Electric Multiple-Units. British Rail Fleet Survey. Shepperton: Ian Allan Publishing. pp. 82–84. ISBN 978-0-7110-1760-3. OCLC 20691674.
^"Southern '313s' are network's veterans". Rail Magazine. No. 949. Peterborough: Bauer Consumer Media. 26 January 2022. p. 30.
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