Kyle_in_Tex
Super Star Member
If you need clean 3phase, look up phase perfect. Pricey, but the best.
If you need clean 3phase, look up phase perfect. Pricey, but the best.
I would build an RPC with PhaseCraft controls in a minute just to convert to 3PH for most motors (constant speed/load) and go right to VFD to gain speed control on machine spindles, but use neither for plotter, printer, or CNC machine/table if I could help it.
If you'd pay Cadillac money to get Roll Royce-class waveform and phase balance that your poco only promises there is a 'best' for this IMO and that's a brand called PhasePerfect. I'd be shocked if any maker advised against PP, would expect to see it recommended #1 if anything were esp if seeking isolation from electrical 'noise'/effects generated elsewhere onsite (on your meter).
btw, PP in not just another big biz gadget foisted on everyday users by distorting the benefits out of proportion to our smaller power demands. Lab quality power for delicate electronics is out there. You wouldn't by a cheapo surge suppressor for a valuable tool, with PP you might not need one either. Google-up and find out more.
Phase Perfect
(no connection to them ..)
Being 2016 only Ludites afraid of new fangled tech want dirty inefficient three phase power from something other than a VFD.
I would definitely suggest that you talk to the equipment manufacturer for a recommendation because that equipment is not strictly motor loads.
Phase converters work fine for motor loads, but for other types of equipment they can cause some serious problems. A phase converter uses the existing two phases of incoming power and manufactures the third phase. The problem with that approach is that the two incoming phases are 180 degrees apart and the third phase is at 90 degrees to them. That phase is also at an odd voltage to the neutral (typically 284 volts for a 230 volt system). True three phase power has all phases 120 degrees apart and equal voltage to neutral. These characteristics can cause issues for non-motor types of loads.