Originally Posted by
Ed Anderson
Delta has more torque. I'd say that's an odd combination. In 34 years of hooking up motors... I've ran into that maybe three times. ... and it was the opposite they started on delta and switched to wye. Only seen that set up on sludge pumps in refineries.
The starting current which is 5-6 times full load current requires current limiting or an over sized supply is the issue. VSD or soft starter is the preffered method but in larger systems swapping the winding configuration is not uncommon.