Originally Posted by
crane550
For example, if you have a 3kw spindle, your looking at just under 5HP. This means you need an inverter rated at least 10HP to run single phase. This was my case when shopping.
I think you're misunderstanding or mis-stating something. A 3kw vfd will run up to a 3kw spindle at full power.
I have. 2.2kw wj200 running my 2kw spindle off of 220 single phase and it works just fine. Me thinks you over bought by double.
-Andy B.
http://www.birkonium.com CNC for Luthiers and Industry http://banduramaker.blogspot.com