On 2009-02-25, Milo milo@oil wrote:
I read a lot of write ups on using capacitors to balance the 3PH out of a
idler motor.
But, I can't find anything on using them with a 440V system.

Brief description of my set-up: (what I'm trying to run is a 5HP 440V lathe
motor 2 speed, reversible)

I have a 110V 1PH 1.5HP pony motor, belted to a 230V 3PH 7.5HP idler motor.
Feeding the idler motor with 220V 1PH on A & C leg, wild leg on B. A B & C
feed into a 440/208 auto transformer 'backwards' to boost the voltage.

I'm having a hell-uv-a time dialing in my 440V. I have multi taps on the
transformer, but try as I might. I just can't get 3 legs of 440. I can get
two, but as soon as I try to dial in the wild leg, (using the taps) one of
the other legs goes high or low.

How does voltage look on the 230v side?

i

--
Due to extreme spam originating from Google Groups, and their inattention
to spammers, I and many others block all articles originating
from Google Groups. If you want your postings to be seen by
more readers you will need to find a different means of
posting on Usenet.
http://improve-usenet.org/