The Renfe Class 251 is a class of electric locomotives operated by Renfe in Spain. They are aesthetically and conceptually based on the JNR Class EF66 operated in Japan, but they have many differences in mechanical design and power output, as well as manufacturers.[1]
^Harris, Ken, ed. (2005). Jane's World Railways 2005-2006 (47th ed.). Jane's Information Group. p. 415. ISBN0 7106 2710 6.
^ abRoss, David; et al. (2007). The Encyclopedia of Trains & Locomotives (Paperback ed.). Amber Books. p. 476. ISBN978-1-905704-45-3.
Further reading
"Locomotoras eléctricas 250 y 251" [Electric locomotives 250 and 251] (PDF). Vía Libre (in Spanish). Fundación de los Ferrocarriles Españoles. June 2005. pp. 107–114. Archived from the original(PDF) on 2007-09-27.