page_title: NSB Di 6
section_title: Specifications
hierarchical_section_title: NSB Di 6 / Specifications
caption_attribution_description: Norsk bokmål: NSB Di 6 i godstog 5792 (Bodø-Trondheim) passerer Leangen stasjon 3,5 km før Trondheim i mai 1998. English: Norwegian State Railways class Di 6 with freight train from Bodø, passing Leangen station 3,5 km before reaching its destination Trondheim in May 1998. Deutsch: Norwegische Staatsbahn (NSB) Baureihe Di 6 mit Güterzug zwischen Bodö und Trondheim, am Leangen Bhf in Trondheim im Mai 1998.
context_page_description: NSB Di 6, later designated ME 26 and DE 2700, is a class of twelve diesel-electric locomotives built by Siemens for the Norwegian State Railways. The prime mover provides a power output of 2,650 kilowatts, a starting traction effort of 400 kilonewtons and a maximum speed of 160 kilometres per hour. They have a Co′Co′ wheel arrangement. The bidirectional locomotives were designed for use with both passenger and freight trains.
  The units were ordered by NSB in 1992 as replacements for the aging Di 3, and were particularly intended for use on the Nordland Line and to a lesser extent on the Røros Line. Construction was done by Maschinenbau Kiel in Kiel, Germany, which was then part of Siemens Schienenfahrzeugtechnik. The class is largely based on the MaK-built DB Class 240, with each unit costing 32 million Norwegian krone. The first units were delivered in March 1996, one year after schedule, but were plagued with faults. By 1999, the entire order was terminated and the locomotives returned to Germany. They were taken over by locomotive lessor Dispolok and were used by various Germany railway companies.
context_section_description: The diesel-electric locomotive has a  MaK 12-cylinder 12M282 diesel prime mover which provides a power output of 2,650 kilowatts (3,550 hp) at 1000 revolutions per minute. Transmission of power is by Siemens-built bogie-mounted three phase asynchronous induction type double pole pair traction motors which power the wheels via reduction gear and a hollow quill drive connected to the wheels at both ends via resilient links. The six traction motors are supplied with three-phase electrical power by gate turn-off thyristor controlled inverters using pulse-width modulation controlled by a Siemens' Sibas-32 traction control electronics. The electronic inverters are cooled by evaporated fluid, the traction motors are air cooled by external fans.
  The units have a starting traction effort of 400 kilonewtons (90,000 lbf) and a continuous traction effort of 283 kilonewtons (64,000 lbf). Maximum operating speed is 160 kilometers per hour (99 mph). The locomotives each have two bogies, each with three powered standard gauge axles, giving a Co′Co′ wheel arrangement. The bogies are equipped with two-stage suspension. The bogies have a wheelbase between the outer wheels of 3.940 meters (12.93 ft) and a distance between the bogie centers of 11.750 meters (38.55 ft). The wheels have a diameter of 1,060 millimeters (41.73 in) when new. The locomotive has a minimum curve radius of 100 meters (328 ft).
  The bidirectional locomotives are 20.960 meters (68 ft 9.2 in) long, 3.000 meters (9 ft 10.1 in) wide, 4.385 meters (14 ft 4.6 in) tall and weigh 122 tonnes (120 long tons; 134 short tons). The fuel capacity is 5,000 liters (1,100 imp gal; 1,300 U.S. gal). The units were originally equipped with a galley and toilet for the engineer. The locomotive has head end power, allowing it to haul passenger trains in addition to freight trains. NSB's Di 3, Di 4, Di 6 and Di 8 can all be run with together with up to three locomotives in multiple.
caption: A Norwegian State Railways Di 6 locomotive hauling a freight train at Leangen Station on the Nordland Line in 1998
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