quote:

Originally posted by stoic-one:

quote:

Originally posted by jimmy123x:
Originally posted by stoic-one:
Mkay...

Generally speaking, it's more efficient to run VFD's on 3 phase motors, because as I noted, single phase motors would need to be de-rated on a VFD (generally).

You're probably looking at a combination of motors and uses, sound's like 3 phase 230VAC? Yes?
3 phase 230VAC VFD's are common as dirt. I work on industrial equipment, which is almost exclusively 480VAC 3 phase, some on VFD's but most on contactors/relay starters. Mind you, we're talking industrial systems with hundreds of motors/starters/VFD's.

Sorry for the thread derailment...