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The Renfe Class 311 is a class of four axle Bo'Bo' diesel electric shunting and light freight locomotives.

• Background and design

• Derivatives

• See also

• Notes

• References

• Sources

The prototype locomotive 311.001 was designed by M.T.M. (Barcelona), Ateinsa (Madrid) and Babcock & Wilcox (Bilbao); the project was led by the Instituto Nacional de Industria.cite-ref-3[note 1]

The prototype locomotive led to an order of 60 units, which were assigned to the subclass 311.1, and numbered 311.101 to 311.160.

The transmission system uses 4 axle hung pinion drive three-phase asynchronous motors powered by a three phase alternator driven by a MTU engine partly license built by Bazán. Siemens supplied Sibas-16 microprocessor engine control systems.cite-ref-4[3]

The prototype locomotive was initially painted orange with a white stripe, the series production were all given a red/silver livery; standard for Renfe shunting locomotives. Some units have subsequently received a more recent white/grey Renfe livery. As of 2010 most of the units are operated by Renfe Mercancías, about one third have been assigned to the infrastructure company Adif.cite-ref-5[4]

The locomotives were a success for the Spanish engineering industry, and the design formed the basis of a number of locomotive types exported from the Meinfesa factory: the SBB Am 841 (40 units 1994), the GA DE900 locomotives for Mexico, Israel and Egypt (35 units, 1997-2000) and the SNCF Class BB 60000 (175 units, 2004-8).cite-ref-6[5]

• Renfe Class 309 and Renfe Class 310: contemporary shunting locomotives ordered a during the same period of modernisation of Renfe's shunter fleet.

cite-note-3note 1. ↑ The locomotives are sometimes known as Mabi from the initials of the companies involved in the design of the locomotive.

cite-note-j-11. citerefjorge-sanz-mongayJorge Sanz Mongay. "Serie 311". www.jorges.arrakis.es (in Spanish). Archived from the original on 2008-04-30. Retrieved 2010-08-28.

cite-note-l-22. "Caract. técnicas - Material motor - Renfe 311". www.listadotren.es (in Spanish).

cite-note-43. ↑ "Las modernas locomotoras de maniobras de Renfe de la Serie 311". www.todotren.com.ar (in Spanish).

cite-note-54. ↑ "ADIF - 311". www.listadotren.es (in Spanish).

cite-note-65. ↑ "References Vossloh Rail Vehicles". www.vossloh-espana.com. Vossloh Rail Vehicles (Vossloh Espana). Shunting Locomotives.

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• Arenillas Melendo, Justo : "La Traccion en los ferrocarriles españoles, Editorial Via Libre, Madrid, 2007