Re: [CAD_CAM_EDM_DRO] Running a Bridgeport Interact 1 Mk1 on single phase 240v

----- Original Message -----
From: "dgsutton2000" <dgsutton2000@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, September 06, 2004 6:35 AM
Subject: [CAD_CAM_EDM_DRO] Running a Bridgeport Interact 1 Mk1 on single
phase 240v


> but the servos are
> fed from a big 3KVA transformer that's wired across 2 of the 420v
> phases. What I was hoping to do was get the transformer rewound to
> feed in single phase and output the correct voltages of 180-0-180-
> 380 to the chokes and drive boards. But I guess this is not that
> simple because I am dealing with what was supposed to be 2 phases
> that are 120 deg apart and my new single phase transformer will not
> give me the same wave


Hi Graham

If this transformer is just fed with two wires from the 420v three phase
power and no other neutral wire, then I believe that it has to be single
phase. All you would need to do is find a single phase transformer to
provide the correct voltage for the servos or transform the 240 to 420 and
feed the existing transformer.

Bob