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Reply to "EMD E unit electrical system redundancy question"

mlaughlinnyc posted:

It would not make sense to have each generator wired to a single truck.

Well, it may notbmake sense to YOU, but that is EXACTLY how E Uints were designed and manufactured.

 And I fell pretty sure that the throttle did not have two completely separate sets of wiring.

No, the throttle didn't have "two completely separates of wiring", but all the commands from that single throttle went to both power plant electrical cabinets.

  With only one engine, you would not want to have power to only one of the trucks. 

Why not? That is indeed how the twin engined E Units were all designed, as well as the twin engined DD35, DD35A and the biggest DDA40X.

That would have made it impossible to start a heavy train because of wheel slippage. 

Do you have a lot of experience with real diesel electric locomotives? Also, lets remember that we are discussing EMC/EMD E Units, which were designed & developed for PASSENGER SERVICE. They were NOT drag freight locomotives.

With four motors getting power from only one engine, you could at least start the train but you would have a much lower top speed.

Really? How did you come to that conclusion? Again, how much experience do you have with real railroad diesel electric locomotives?

 

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