RENFE to introduce Class 730 electro-diesel train-sets for HSR in Spain September 21, 2011 | Europe News Spain-based national rail transport operator Red Nacional de los Ferrocarriles Españoles (RENFE) will introduce Class 730 gauge-changing electro-diesel train-sets for providing high-speed rail ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password