On Wed, 2012-05-09 at 09:55 -0500, John Thornton wrote:
> Ok, what I had been running was 4x60uf caps between 1 and 3 and 1x60uf 
> cap between 2 and 3 (generated leg on 3 then) and that seemed to work 
> the best.
> 
> at the phase converter
> to ground 1 = 120v, 2 = 120v, 3 = 226v
> phase to phase 1 + 2 = 244v, 2 + 3 = 248v, 1 + 3 = 262v
> 
> at the 380v taps on the transformer
> to ground 1 = 205v, 2 = 205v, 3 = 324v
> phase to phase 1 + 2 = 388v, 2 + 3 = 394v, 1 + 3 = 416v
> 
> John
> 
> On 5/9/2012 7:59 AM, andy pugh wrote:
> > On 9 May 2012 13:51, John Thornton<bjt...@gmail.com>  wrote:
> >> I don't understand what you mean by "weak" leg?
> > You said you had it "wildly out of balance" ?
> >

I'm not familiar with Simodrives, but my guess is that all of the
components on the power input are there to eventually create a stable DC
bus voltage. I would tend to think about how to get from the power you
have available to create the DC your bus needs and feed that into the DC
tap. This could eliminate the need for the three-phase converter and
other fluff, but the Devil is in the details.

-- 
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
California, USA


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