3.1.4 Torque decreases in inverse proportion to speed
As the speed increases, as shown in Figure 3.2.1, the torque drops. Examples
are:
- facing lathes
- rotary peeling machines
- winding machines
- coilers
The mean load torque ML can only be determined on a graph.
3.5
Three-phase Induction
Motors
When the torque M increases quadratically, the power P increases
with the cube of the speed n.
P ~ n3
If the torque M decreases in inverse proportion to the speed n, the
power P remains constant.
P ≈ const.