Re: VFD drive problems with older 3-phase motors (corre...

Hi Ted
Most of the dual-speed (as opposed to dual-voltage) motors that I have seen
are wired like this: L1+T1 L2+T2 & L3+T3, with the other leads open for low
speed and for high speed they use L1+T4, L2+T5 & L3+T6 with T1+T2+T3 tied
together. Where L1 L2 L3 are the 3 phase power leads from the VFD or power
panel. Hope this helps a little.
Bob

----- Original Message -----
From: "Ted Inoue" <ted@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, December 25, 2003 4:56 PM
Subject: [CAD_CAM_EDM_DRO] Re: VFD drive problems with older 3-phase motors
(corre...


> Ok, I thought I understood how these wirings were different, but it
> sounds like I don't.
>