On Friday 26 June 2009, cmg...@sover.net wrote: >Regarding VFD's > >A poly phase input unit may be used even if single phase is the only power >avilable. The VFD must be sized a bit (1.5 -2 X) to accommodate the >current through the DC rectifiers. >The units I have (a Toshiba and two Siemens) all came by way of E-bay (New >in box) and cost less than $50 each, 7.5 and 5 HP. List price would have >been much greater. > >Just a bit of information. > >Cal
I will keep that in mind. Being a CET, replacing the diodes with bigger stuff is no problem. As a BCast engineer, I've dealt with some good sized hocky pucks here and there, the ones with flying anode leads & 500MCM cable. :) >From that comment I also assume one can run lower powered motors from higher rated units & the only disadvantage might be a slight loss of conversion efficiency? -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. <https://www.nrahq.org/nrabonus/accept-membership.asp> It's hard not to like a man of many qualities, even if most of them are bad. ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
