3 phase motors are more efficient, they have a more simple design, they last longer and can produce more torque and HP than the comparable single phase motor. With that being said, most homes do not have 3 phase power. Than can be used, but a phase converter must be purchased in order to do so. A phase converter needs to be sized the HP rating of the motor. For the motor on that compressor, you would need a phase converter that would handle the 7.5hp. As far as RPMS go, that is not an issue. If you shop around, a converter for that size motor can be bought for under $250. Just factor that in to the 'deal' when shopping for a compressor. I will edit my post above to make a note about 3 phase power requirements for residential use.
Darren
Last edited by Fluid Power; 02-21-2012 at 05:47 AM.
|