Moderators: GirlOnTheTrain, mtuandrew, Tadman
Tadman wrote:It's my understanding that "loading problems" mean the traction motors will not accept significant amounts of amps from the alternator. In earlier days it was more related to transition, now it seems to be related to computers controlling the flow of electrons to motors.Pretty much what you said is the issue.
This is all very lay-person and I understand Nasadowsk is a real live electrics guy of some sort.
DutchRailnut wrote: ↑Tue Jun 25, 2019 6:10 pm a AC propulsion locomotive handles different from DC propulsion locomotive , it takes a while to get hang of it . adding a little brake for example to manage wheelslip gets you propulsion faults , only way to control slip is by throttle reduction one at time as each truck or axle is basically independent of the others.I agree however Siemens and the RFE are instructing engineers to leave the throttle alone and let the computer deal with it (similar to running the ACS on wet rail). I personally haven’t ran a Charger on wet rail however someone very high up said that that Amtrak is concerned with running them on the long hauls up the mountains in poor weather because of poor performance on slippery rail.