Need to change 240 volts to 575 volts via autotransformer for small CNC surface grinder (3 phase of course) Grinder spindle is 2 HP, hydraulic tank motor is 1 hp. Two axis drive motors to add in the mix, with plates (on the motors) that read "input 3AC, 123V, 6.0A" "output 1kw"
Also there is a tiny coolant motor at 1/8 hp and a vaccum system with 1/2 hp motor. Also the CNC control itself but I wouldn't think that would take any more input than a home PC.
So, would a 5kVA autotransformer be "barely adequate" or would 7.5 kVA be min size needed ?
Also there is a tiny coolant motor at 1/8 hp and a vaccum system with 1/2 hp motor. Also the CNC control itself but I wouldn't think that would take any more input than a home PC.
So, would a 5kVA autotransformer be "barely adequate" or would 7.5 kVA be min size needed ?
