Swedish diesel locomotive class
| Tb |
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 Banverket DLL3109 in Ängelholm |
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| Performance figures |
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| Maximum speed | 105 km/h (65 mph) |
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| Power output | 1,235 kW (1,656 hp) |
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Tb is a diesel-electric locomotive used by Banverket of Sweden, for line service and snowploughing. Ten locomotives were built for Swedish State Railways (Swedish: Statens Järnvägar, SJ) in 1969-1970 by Nydquist & Holm (NOHAB), for combined freight and snowploughing service, along with 20 smaller Tc locomotives. When Banverket was demerged in 1988, the Tb was transferred to it.