It depends. For an asynchronous motor lower voltage will mean lower available torque although it is technically possible to get full torque up to there 208 volt is needed for full power but only if the inverter deliver 208 volt at this point. For a synchronous permanent magnet motor voltage is needed to get the rpm up although it may be possible to weaken the magnetic field to get rpm up.
Nicklas Karlsson On Tue, 3 Nov 2015 09:41:37 -0500 (EST) "Todd Zuercher" <zuerc...@embarqmail.com> wrote: > I recently purchased an inexpensive router spindle off of ebay. It is rated > at 6kw and 380v 3ph. The old spindle I'm replacing was dual voltage and could > be wired Y or delta, for 200-240 or 380-460 (7HP). Stupid me I didn't think > to check the old VFD and it is only capible of low voltage (running 208 3ph). > > So my question, what are the repercussions of feeding this motor with only > 208 3ph? > > If the only problem is a loss of a percentage of power, but not more than > half, I can live with that. (It cost less than 1/3 the price of the > original.) > > -- > > ======================================== > > Todd Zuercher > mailto:zuerc...@embarqmail.com > > ======================================== > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
