starting resistance การใช้

Control equipment shunted out starting resistances automatically as speed increased and current drawn fell.
Control was through a 4-stage series-parallel controller with starting resistances, and some electric braking was provided by using the resistances.
The metadyne system is more efficient than conventional starting resistances, particularly when the locomotive starts and stops frequently, or when it needs to run for long periods at slow speeds.
Acceleration was smoother than on a train which switched starting resistances, and when braking the metadyne unit returned power to the tracks, which could be used by other trains if needed.
Further notching out of the controller shorts out the starting resistances in pairs until in starting notch # 16 all of the starting resistances are shorted out; this corresponds to running notch # 3 on the engineer's controller.