Single Phase source Three phase Out Drive
Single Phase source Three phase Out Drive
(OP)
I have single 120/240V 400A service.
What is the largest three phase motor that drive equipment can power?
What is the largest three phase motor that drive equipment can power?






RE: Single Phase source Three phase Out Drive
RE: Single Phase source Three phase Out Drive
Why don't you Google it and let us know.
RE: Single Phase source Three phase Out Drive
Motor-generator sets are available in enormous ratings, but I think you'll struggle to find a really large single phase motor to drive one: about 25HP is the highest I've seen, and that was a real old one from some piece of farm machinery.
Phase converters are available up to reasonably large ratings but the third phase they produce is not very good - weak and it doesn't have a true 120° phase displacement - plus they normally need to be tuned to the load they serve.
Have you asked the utility to cost installing a 3-phase supply?
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RE: Single Phase source Three phase Out Drive
RE: Single Phase source Three phase Out Drive
BTW are you the same Bill I already answered this question for in another forum, but where you had a 200A service? If not, read this.
http://forums.mikeholt.com/showthread.php?t=123505
If so, your 400A service obviously increases the limit. But as I said in that other thread, there are other issues at hand.
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