Re: [CAD_CAM_EDM_DRO] Re: Phase converter for CNC lathe

fuddham@... wrote:

> I have been looking further into the phase converters for CNC
> equipment and have found a factory built unit www.rotomaster.com that
> is reasonable. They are out of SC and sell a 30hp CNC unit for
> $1550. I do have one concern: to balance the voltage for CNC use
> they use capacitors. Is this how other phase converters balance the
> voltage? Is this the best way? Will it cause me any problems? They
> said they have been running CNC machines for years without any
> problem and have a warrenty.

30 HP???? You're going to try to run a 30 HP motor on single phase?
Are you sure your main service can handle the current draw?
Does that warranty cover the CNC machine? If so, and you think
the power mains can handle it, then you can probably go ahead. If
you can isolate which phases drive the CNC control, then you should
arrange the connection such that the CNC control is on the main 240 V
legs, not the generated phase.

Jon