Re: Who runs CNC CONTROL on a Rotary Converter?

General rule of thumb is just under 2x single phase leg current versus 3
phase leg current. I think theoretical is 1.85 ish.

cvl

-----Original Message-----
From: David L Anderson <daveland@...>
To: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@onelist.com>
Date: Monday, December 27, 1999 12:41 PM
Subject: [CAD_CAM_EDM_DRO] Who runs CNC CONTROL on a Rotary Converter?

>From: David L Anderson <daveland@...>
>
>I looked over the logan actuator page on rotary converter designed. It
>was nice, but delt
>only with motors. I want to run my 3-phase (input) servo amps from
>single phase. They
>are 10 amp DC output @ 150Vdc.
>
>OK Guys... Which one of you runs your CNC control on a rotary single
>phase to 3 phase
>converter???? How do you size it??? I was going to go for 5Hp ( I
>think that is just below
>20 Amps @ 220V with 85% efficiency) Now if I "convert" that to 3 phase
>I guess I get
>only 33% of the current in each leg?? SO Can I get 6.6 amps ( 33% of 20
>amps) at 220V 3 phase into my 3 phase transformer for the servo
>amps??? Or is there a limit or losses in the rotary converter that limit
>the current in the generated leg?
>
>dave
>
>>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

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>