SNCF Class BB 10003 locomotive was used as a test machine for operations of the TGV-TMST on 750 V and 3000 V. In 1998 the locomotive was converted back to a non-experimental class - as SNCF BB 15007. (SNCF Class BB 15000) The results were not as good as synchronous motor technology; it was not until the introduction of GTO transistor technology that series production of an asynchronous induction motored locomotive began in France, as the "Eurostar" TGV (1992), and later the BB 36000 "Astride" (1996). SNCF Class BB 10003 The locomotive SNCF BB 10003 was an experimental prototype locomotive converted from a SNCF
SNCF 232.Q.1 SNCF 232.Q.1 The SNCF 232.Q.1 was an experimental prototype steam locomotive of the Société nationale des chemins de fer français (SNCF) which entered service in 1940. It was Baltic or 4-6-4 locomotive. The locomotive was ordered on 9 March 1936 by the Société nationale des chemins de fer français in an attempt to solve the problem of the crankshaft which limited, in part, the speed of the locomotive and its inherent dynamic augment or hammer blow. The order for its construction was placed with the firm of Schneider et Cie. It was decided to equip the locomotive with a conventional