I didn't know that, maybe it's similar to my 40 year old Miller Dial-arc welder that I bought 5 years ago. That to can be hooked into 3 phase 480 or 4 something but I changed power clips inside so now I have it on 240 volt input cable, 80 amp breaker.Most 3 phase motors can be wired for 480 or 240. Re-wire it for the lower voltage and all you need is a phase converter.
Aaron Z