What affects the current ratings on constant torque pole changing motors?

Two different motors, one is rated 1.49A on slow speed configuration and 1.43A on high speed. The other motor is rated 6.09A on slow speed and 6.99A on high speed. These are constant torque pole changing motors. I don't understand why one motor has an inverse speed - current relationship and the other one has a proportional current - speed relationship.

What I know is that if you keep a relatively constant voltage/speed ratio your air gap Flux will be constant, meaning your torque will be constant. I just don't understand why the current ratings aren't inverse on both motors

• I assume you are talking about induction motors? If so are they both Dahlander or separate winding pole switching.
– RoyC
Nov 2 '19 at 12:30