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I have never seen a locomotive that was permanently in parallel by design. I do remember having one that would not go back into series by because of a fault, at slow speeds it would not pull itself. I have seen some SD39s that were designed for the yard that did not have parallel contactors. I also remember having an SD40-2 that blew it's series contactor when it dropped down under heavy load. <br /> <br />If what you say were true when the amp meter read 4000 amps the traction motor you say is rated for 1500 amps would surely fry.
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