Justin, in just the past few days I have been told by Apps Engnrg at several VFD mfrs that for 3 phase standard industrial VFD's: input voltage can range over about 208 to 240 VAC; input frequency can range over 48 HZ to 120 HZ -- without derating the VFD. I have not tried this myself -- but am about to do so. Hope this helps.
I am new to this board. I hope I am not duplicating info in another post.
Now, my question is: how can I support standard single-phase US consumer loads 120VAC/1PH/60HZ(e.g., a microwave oven)? Apps Engrng at the VFD mfrs have no advice / they have no experience with other than 3 phase motors on the output of their products. They do confirm that, yes, a single-phase load connected between the VFD output phase/motor lead and the PE (Protective Earth) terminal of the VFD should see a voltage of 230/1.732 = 120 VAC.
Well, if I have to rig up a 230 to 120 VAC delta/wye transformer(s), with the VFD output connected to the primary and the single-phase loads to the secondaries -- the cost to do so will be 2 or 3 times the cost of the VFD.
Any help out there, please? Thank you.