prrhorseshoecurve posted:mlaughlinnyc posted:Hot Water posted:PRR 5841 posted:Gentlemen,
If one of the two diesel/DC generator sets shuts-down for some reason while pulling a train, does the current produced from the remaining operative diesel/DC generator set go to only one or both pairs of traction motors?
Each engine generator, and its corresponding electric control circuitry, power ONLY the two traction motors in that truck specific truck. Thus, if one engine generator set "goes down", then THAT truck is unpowered.
I’m assuming that each diesel/DC generator set was permanently wired to one truck (2 motors) and isolated from the other.
Correct.
The normal diesel locomotive had one generator. It would not make sense to have two generators each wired to a set of traction motors. In any slow speed situation, one of two diesel engines would provide enough power for four traction motors. IF only two motors were powered, the tonnage that could be moved at slower speeds would be halved.
What locomotives do you know had two generators ?
Malcolm Laughlin
Didn't the DD35, DD40ax , the U50c, and the ALCo C855 had two motors and two generators?
Well, to be correct, the DD35, DD35A, DDA40X, and the GE & ALCO "Big Units", had twin Diesel Engines/Generators, while the "motors", i.e. Traction Motors, were all mounted on the axles.
