British Rail Class 87

The British Rail Class 87 is a type of electric locomotive designed and built by British Rail Engineering Limited (BREL) between 1973 and 1975. A total of thirty-six locomotives were constructed, to work passenger and freight services over the West Coast Main Line (WCML).

British Rail Class 87
A Class 87 at Kenton in 1979
Type and origin
Power typeElectric
BuilderBritish Rail Engineering Limited Crewe Works
Build date1973–1975
Total produced36
Specifications
Configuration:
  UICBo′Bo′
Gauge4 ft 8+12 in (1,435 mm) standard gauge
BogiesBP9
Wheel diameter3 ft 9+12 in (1.156 m)
Minimum curve80 m (4 chains)
Wheelbase43 ft 6+18 in (13.262 m)
  Bogie10 ft 9 in (3.280 m)
Pivot centres32 ft 9 in (9.98 m)
Length:
  Over beams58 ft 6 in (17.83 m)
Width8 ft 8+14 in (2.648 m) (over body)
Height:
  Pantograph13 ft 1+14 in (3.994 m)
  Body height12 ft 4+14 in (3.766 m)
Axle load19 long tons 13 cwt (20.0 t)
Loco weight80 long tons (81 t; 90 short tons)
Electric system/s25 kV AC Catenary
Current pickup(s)Brecknell Willis high speed pantograph
Traction motors
  • 4 × 1,250 hp (930 kW) GEC G412AZ (87/0)
  • 4 × GEC G412BZ (87/1)
  Rating 1 hour885A
Gear ratio32:73
MU workingTDM
Train heating
Loco brakeAir & Rheostatic
Train brakesAir
Safety systemsAWS Train Protection & Warning System
Performance figures
Maximum speed110 mph (180 km/h)
Power output:
  1 hour1,270 hp (950 kW) per motor
  Continuous
  • 5,000 hp (3,700 kW) (87/0)
  • 4,850 hp (3,620 kW) (87/1)
Tractive effort58,000 lbf (258 kN)
Brakeforce40 long tons (41 t)
Career
OperatorsCurrent:
Bulgarian Railway Company (2007–)
Bulmarket (2012–)
Locomotive Services Limited (2019–)
Former:
British Rail (1973–1997)
Caledonian Sleeper (1997–1998, 2015–2019)
Cotswold Rail (2005–2006)
Direct Rail Services (2004–2005)
EWS (1997–2002)
First GBRf (2004–2007)
Virgin Trains (1997–2006)
Class87
Number in class36
Numbers87001–87035, 87101
Axle load classRoute availability 6
LocaleWest Coast Main Line
Withdrawn2002-2007
Preserved87001, 87002, 87035
Disposition
  • 3 preserved
  • 21 exported
  • 12 scrapped

The type was developed in response to the need to add extra capacity to the electric traction fleet operated by British Rail (BR), in addition to the desire to introduce a higher performance electric locomotive than the existing Class 86, upon which the Class 87 was based. Class 87s were British Rail's flagship electric locomotives from their introduction until the late 1980s, at which point they began to be superseded by members of the newly-developed Class 90 fleet  itself an improved derivative of the Class 87 design.

As a consequence of the privatisation of British Rail during the mid 1990s, all but one of the Class 87s were transferred to Virgin Trains. Under this operator, the type continued their passenger duties until the advent of the new Class 390 Pendolinos, after which they were gradually transferred to other operators or withdrawn between 2002 and 2007. For a time, the type was a staple of electrified freight operations, before it was displaced by the Class 90 in this capacity as well. By the end of the 2010s, there was only one Class 87 that remained in an operational condition in Britain, 87002, which had been initially preserved by the AC Locomotive Group and is presently owned by Locomotive Services Limited. It was previously in use with Serco Caledonian Sleeper and is intended for use on charter services. A large proportion of the fleet has been exported to Bulgaria, where they have entered regular use once again.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.