Konstanty, Walter (GE Indust, ConsInd) wrote:
Some Design theory inputs for a Friday morning: - It's less costly to reverse the field polarity to make the motor reverse. Smaller contactor required.
Mmm... Like everything else, relative. While true the field current is lower, when you switch it you still will get arcing across the switch point. If it's a little relay, it's going to weld shut at some point (cf: all the E15's in the world)
They still should have used contactors on the E15. Chris