Limiting the starting current limits the starting torque, doesn't it?
This is a snippet from a Rockwell white paper. I can't find anything that shows more starting torque that what is listed here.
https://literature.rockwellautomation.com/idc/groups/literature/documents/wp/150-wp007_-en-p.pdf
@jraef and @Gene Bond - we use these on centrifugal fans and impeller pumps, since they have very low starting torque required.
I know that, in the past, some mines used a fairly complicated setup to start conveyors with MULTIPLE 250 HP motors (to get enough starting torque) and then essentially shut off all but one when the conveyor was up to speed. Is that still done?
I would think that a VFD to start up a constant torque load like a conveyor would make more sense. You can use a bypass contactor to run at full speed after it's been accelerated ... ?