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Mr. Stahl, <br /> You have a knack for explaining tech issues, perhaps you could explain something for me. <br /> I understand that the dynamic brake is limited to 700 amps (is it 700 at the grid or each traction motor? not shure) and that as speed picks up braking power increases untill that 700 limit is hit and from that point on the braking is less effective as speed increases. I would like to know how this is acomplished. I mean the regulating the current. Is it done by varying the excitation in the generator(traction motor) or is it modulated with some sort of time division. Please explain.
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