New Zealand DH class locomotive

New Zealand DH class (1978)
DH 2868 shunting two new DLs at Port of Auckland, on 3 June 2011.
Type and origin
Power typeDiesel-Electric Shunter
BuilderGeneral Electric, United States
ModelU10B
Build date1978
Specifications
Configuration:
​
 • UICBo-Bo
Length11.2 m (36 ft 9 in)
Loco weight54 tonnes (53 long tons; 60 short tons)
Prime moverCaterpillar D398
RPM range1300 rpm
Engine typeV12 Diesel engine
AspirationTurbocharged
GeneratorGeneral Electric GT-601
Traction motorsFour General Electric 761
Cylinders12
Cylinder size159 mm × 203 mm (6 in × 8 in)
Performance figures
Maximum speed112 km/h (70 mph)
Power output672 kW (901 hp)
Tractive effort146 kN (33,000 lbf)
Career
Number in class6
Numbers900 - 905 (original)
2816 - 2868 (TMS)
LocaleUpper North Island, mainly around Auckland
First run1978
DispositionAll in service

The New Zealand DH class locomotive is a type of diesel-electric heavy transfer and shunting locomotive in New Zealand's national railway network. The class consists of six heavy shunt U10B type locomotives built by General Electric United States at their Erie, Pennsylvania plant in 1978. Five of the class are used in the Auckland area for heavy shunting duties, including services around Auckland and the Port of Auckland, while one is based at the Port of Tauranga in Mount Maunganui.

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