Sonny, 3phase power standards in the USA are set up three different ways..Delta uses 3 wires,usually only used for balanced loads-motors,refrigeration compressors and heat loads. Wye uses 4wires,it's the same as a delta system except it has a neutral wire(white on 208v,grey on 277v)that brings unbalanced currents back to the transformer(s) neutral,for 120v loads on a wye system.(or 277v on a 480v system) Wild leg 3phase uses two transformers,not used much anymore but you will find it in the cities still around in old buildings and sometimes on farms.Basic voltage systems here in the USA are 120/240 single phase,120/208v 3ph wye,4wire, 240v 3ph delta 3wire, and 277v/480v delta or wye.(Canada uses some 347v and 575v just to confuse you) Motors have gone thru some improvements over the years,efficiencies have gotten better,early motors were just numbered as to frame size,like 203 or 205 frame..then in '52 they rerated the frame sizes with a 'U' designation,and then again in 1964 they came out with the 'T'series frames(smaller,more compact designs) where it's been at since. Frame sizes are basically interchangeable from manufacturers across different brands,like a Lincoln 215T frame motor will interchange with a Baldor 215T frame,the only difference is the electrical box on the side,mounting dimensions,shaft sizes and centers are the same. Insulation has gotten better with newer epoxies and resins to coat the windings with..Inverters and VFD's create stresses on winding wires and cause pinholes in the insulation over time..manufacturers have come out with newer insulation that protects better and isnt affected by the VFDs.
Sonny take the static converter you have and wire a spare 5hp motor to it, then wire all your machines to that motor with a junction box or disconnect switch..then you'll have a crude 3ph system you can use
