plastikosmd
Hot Rolled
- Joined
- Sep 6, 2003
- Location
- New England
So in running my new to me but old rotary converter, one lathe was humming a bit like it was getting too much power. It sounded normal if I added more load i.e. Started another machine. Now I started a vdf conversion on a doall bandsaw and got an over voltage error. Running 2 lathes in the background cleared the error. So out comes the voltmeter and questions! Vdf questions to follow elsewhere.
Unloaded voltages (L3 is generated leg)
Input
200 amp
L1-ground 120v
L2-ground 120v
L1-L2 240v
No load post converter
L1-L2 240v
L1-L3 (ranges -jumps around 268-278v)
L2-L3 (ranges -jumps around 292-312v)
Adding more loads brings the high voltages down to 240-260ish range
So,do I just run machines, add a motor in series or spend money and add a voltage equalizer thing that I googled?
Unloaded voltages (L3 is generated leg)
Input
200 amp
L1-ground 120v
L2-ground 120v
L1-L2 240v
No load post converter
L1-L2 240v
L1-L3 (ranges -jumps around 268-278v)
L2-L3 (ranges -jumps around 292-312v)
Adding more loads brings the high voltages down to 240-260ish range
So,do I just run machines, add a motor in series or spend money and add a voltage equalizer thing that I googled?