Great Northern boxcab (3 phase)

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Great Northern Boxcab (3-Phase)
Two Great Northern boxcabs
Type and origin
Power typeElectric
BuilderGE and ALCO
Build date1909
Specifications
Configuration:
​
 • AARB-B
 • UICBo′Bo′
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter60 in (1.5 m)[1]
Length44 ft 2 in (13.46 m)
Width10 ft 0 in (3.05 m)
Loco weight230,000 lb (100,000 kg; 100 t)
Electric system/s6.6 kV, 25 Hz AC (3-Phase)
Current pickup(s)Pantograph
Traction motors4 × GE-1506
Gear ratio19/81
Performance figures
Maximum speed15 mph (24 km/h)
Power output1,500 hp (1,100 kW)
Tractive effort:
​
 • Starting57,500 lbf (256 kN) at 25% adhesion[1]
 • 1 hour38,000 lbf (170 kN)[1]
 • Continuous34,800 lbf (155 kN)[1]
Factor of adh.25%
Career
OperatorsGreat Northern Railway
Number in class4
Numbers5000–5003
Delivered1909

The GN boxcab locomotives were the first electric locomotives purchased by the Great Northern Railway (GN) for use through the Cascade Tunnel.

The four units delivered were designated as Alco-GE three-phase 5000 series locomotives. The electric locomotives produced 1,000 hp (750 kW) each and had a B-B wheel arrangement. They were three-phase electric locomotives, built in February and March 1909, delivered in Pullman Green. The GN numbered them 5000–5003 and they were used until May 1927.[2]

References

  1. ^ a b c d Manson, Arthur J. (1923). Railroad Electrification and the Electric Locomotive. New York, NY: Simmons-Boardman Publishing Corporation. ISBN 978-587167932-6. Refer to Table F, p.318-319, Line 8
  2. ^ "GN Alco-GE 3-phase 5000s". The Great Northern Empire. 2005. Retrieved January 18, 2015.


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