| Renfe 311 | |
| Powertype: | Diesel-electric |
| Builder: | 311.0 prototype: M.T.M., Ateinsa, Babcock & Wilcox[1] 311.1: Alstom (Meinfesa), Siemens, Bazán |
| Builddate: | prototype 1985 1989-1991 |
| Totalproduction: | 61[2] |
| Uicclass: | Bo'Bo' |
| Wheeldiameter: | 11002NaN2 |
| Length: | 14.21NaN1 |
| Width: | 2.92NaN2 |
| Height: | 4.252NaN2 |
| Locoweight: | 80t |
| Primemover: | MTU 396 B V TC 13 |
| Maxspeed: | 90km/h |
| Poweroutput: | 1065hp |
| Tractiveeffort: | 255kN @ 7.5km/h |
| Locobrakes: | 311.0 prototype: Vacuum 311.1: Pneumatic, rheostatic |
| Operator: | Renfe |
| Locale: | Spain |
The Renfe Class 311 is a class of four axle Bo'Bo' diesel electric shunting and light freight locomotives.
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.[3]
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.[4]
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.[5]
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).[6]