I'm somewhat new to electronics, so please pardon the possibly stupid question.
I am building a variable speed pottery wheel for the wife for Christmas. I have the wheel assembly and 2HP 1725 RPM 3-phase motor. I also have a 3 phase motor controller, that needs 220V-240V input.
So the question is this, we just got a 5KVA step-down toroid transformer at work (I work at a scrap yard), from a server backup power supply. I was wondering if I could use this as a step-up transformer. The reason I ask is that I know toroid primary winding has to take frequency into account as well as everything else. I don't know if the secondary takes this into account as well (or just does the simple 2:1 winding).
I will be making a soft start circuit for this (being that toroids can have a nasty inrush current problem). I'm looking at this transformer because I can get it CHEAP ($21 is a decent deal).