I have the opportunity to purchase a CNC Bed mill. It is currently running off 480 3 phase. Of course I only have 220 single available. The spindle is the only part of the machine that is wired for 480. The VFD accepts 360-480 input power. So it either I build/buy a step up transformer then add a RPC, or I replace the VFD with 220x3 plus RPC, or replace with a 220x1 VFD.
Or does anyone think it could be possible to rewire the VFD for 220?
This is for a 7.5hp spindle.
I am also wondering if I can build a step up transformer out of an old 180amp stick welder.
Thanks!
Joe