Quote Originally Posted by John S View Post
All sorts, some generic Taiwanese el cheapo ones, IMO's Telemechaniques, Yaskawa and Fuji.
Motor powers from 0.25 Hp up to 7.5 Hp

Technically horse power is horsepower regardless of single or three phase, what does alter is the amount of amps pulled to get this power.
However the 3 phase goes come out on top as getting 3 pulses per rev it doesn't bog down as much as a single phase motor with one pulse per rev when a load is applied.

They are smoother, less vibration and with a VFD the 3 phase can have speed control, something the single phase one can't have.

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I'd also recommend Yaskawa & FUJI. I wouldn't recommend ABB to anybody.

Has anybody worked with Yaskawa's latest drive?

http://www.clrwtr.com/Yaskawa-A1000-Drives.htm