I hope you know a majority of single phase motors cannot be run on a VFD, only ones without a switch(either mechincal or solid state), which about 99.9% of those are permanet split capcitor, which are pretty bad doing anything esp if it only draws 3 amps. They also at that power level tend run hot as it is, and some PSC motors don't run on VFD's anyway(my mitsubushi VFD manual states that they may not run at all) as they eliminate the capcitor.
chris |