On Friday 24 September 2021 11:49:02 Todd Zuercher wrote: > They cost about $6500, but that cost is about half any competitors > equivalent. (such as HSD, Omlat...) > > The motor name plate says 800hz for 24000rpm, (guess I assumed that > info was on that page I linked to.)
It may have been buried in the language, but I only read American English. I did find, on ebay, a couple 15+ kwh'ers that go to a kilohertz, with obviously custom built to order pricings. And likely shipping delays to match. Needless to say, that power and voltage level demands state of the art active devices. And design engineers who actually know what they are doing, AND access to them so you can do a mind meld to make sure you are hooking them up accordingly. Even 10 feet of 6 guage in metallic conduit can have enough pf's of capacitance to destroy a 5ns switching device. Makes bigger, plastic conduit a bit more appetizing. > Todd Zuercher > P. Graham Dunn Inc. > 630 Henry Street > Dalton, Ohio 44618 > Phone: (330)828-2105ext. 2031 > > -----Original Message----- > From: Gene Heskett <[email protected]> > Sent: Friday, September 24, 2021 11:26 AM > To: [email protected] > Subject: Re: [Emc-users] VFD Recomendation > > [EXTERNAL EMAIL] Be sure links are safe. > > On Friday 24 September 2021 10:47:49 Todd Zuercher wrote: > > Yes. > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww > >w. > > hsspindles.com%2Fwp-content%2Fuploads%2F2019%2F03%2Fspecs-13.pdf& > >;d > > ata=04%7C01%7Ctoddz%40pgrahamdunn.com%7Cbcf7b99cdd484b02ab9608d97f6f > >c7 > > 65%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637680941219090280%7 > >CU > > nknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1 > >ha > > WwiLCJXVCI6Mn0%3D%7C3000&sdata=bTAaxaFe%2B1kE2WR9jCTqyi2ILgw1x7J > >zc wvl%2FbzBYAc%3D&reserved=0 > > Nice chart. But doesn't mention at any place, rpms vs frequency. > I don't imagine they give that puppy away either. > > I tend to run the cheaper stuff, only having a 254 volt center tapped > at ground single phase feed at my location. > > > Todd Zuercher > > P. Graham Dunn Inc. > > 630 Henry Street > > Dalton, Ohio 44618 > > Phone: (330)828-2105ext. 2031 > > > > -----Original Message----- > > From: Gene Heskett <[email protected]> > > Sent: Friday, September 24, 2021 10:27 AM > > To: [email protected] > > Subject: Re: [Emc-users] VFD Recomendation > > > > [EXTERNAL EMAIL] Be sure links are safe. > > > > On Friday 24 September 2021 09:37:32 Todd Zuercher wrote: > > > Anyone have a recommendation for a good VFD and supplier that can > > > run a 15kw 4pole spindle at 24000rpm? > > > > Thats going to be a tough one Todd, its 10x the power of anything I > > have, and would need to get to 800 hz to run a 4 pole at 24k revs. > > > > Are you sure its a 4 pole? All of my 24k's have been 2 pole, doing > > 24k on 400 hz. 3600 on 60 hz, but needing better cooling to run that > > slow for long jobs. The one I'm running now, will be spitting steam > > back into the 5 gallon tank in an hours running at 4k. But is fine > > for longer jobs at 14k-20k with the mister on. At the higher revs, > > it never gets the tank above 36C. > > > > > Todd Zuercher > > > P. Graham Dunn > > > > > >Inc.<https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F > > >%2 5 > > >2F > > > > > >https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fww > > >w. > > > pgrahamdunn.com%2F&data=04%7C01%7Ctoddz%40pgrahamdunn.com%7Cbc > > >f7b > > > 99cdd484b02ab9608d97f6fc765%7C5758544c573f47cebee96c3e0806fb43%7C0 > > >%7C > > > 0%7C637680941219090280%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDA > > >iLC > > > JQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=9shs > > >kfk > > > ovi8mTo6%2BL%2BIZfMXKdYXnOIrzDwj1UoyQTRw%3D&reserved=0%2Findex > > >.ph p&data=04%7C01%7Ctoddz%40pgrahamdu > > >nn > > > .com%7C4727423beae5413ddb1008d97f67884b%7C5758544c573f47cebee96c3e > > >08 06 > > > fb43%7C0%7C0%7C637680905784414687%7CUnknown%7CTWFpbGZsb3d8eyJWIjoi > > >MC 4w > > > LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000& > > >sd at > > > a=Nx%2BJRwnxdrUALX1Gr268XqM%2BcVZ49OAy2BChgj9K%2BOs%3D&reserve > > >d= 0> 630 Henry Street > > > Dalton, Ohio 44618 > > > Phone: (330)828-2105ext. 2031 > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > [email protected] > > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2F > > >li st > > > s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01% > > >7C to > > > ddz%40pgrahamdunn.com%7C4727423beae5413ddb1008d97f67884b%7C5758544 > > >c5 73 > > > f47cebee96c3e0806fb43%7C0%7C0%7C637680905784414687%7CUnknown%7CTWF > > >pb GZ > > > sb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6M > > >n0 %3 > > > D%7C3000&sdata=ZJy9nGS8vpOxvQSNzrWWYuioxOvg%2BKMmPuNAeF%2FRFaQ > > >%3 D& amp;reserved=0 > > > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author, 1940) > > If we desire respect for the law, we must first make the law > >respectable. - Louis D. Brandeis Genes Web page > ><https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgen > >e > > slinuxbox.net%3A6309%2Fgene&data=04%7C01%7Ctoddz%40pgrahamdunn.c > >om% > > 7C4727423beae5413ddb1008d97f67884b%7C5758544c573f47cebee96c3e0806fb4 > >3%7 > > C0%7C0%7C637680905784424735%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAw > >MDA > > iLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=Bmh > >VGU %2BBJ2YB8pm8yvDnpd4oNKOLfpVnG9qR6HPJNFo%3D&reserved=0> > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fli > >st > > s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7C > >tod > > dz%40pgrahamdunn.com%7C4727423beae5413ddb1008d97f67884b%7C5758544c57 > >3f4 > > 7cebee96c3e0806fb43%7C0%7C0%7C637680905784424735%7CUnknown%7CTWFpbGZ > >sb3 > > d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D > >%7C > > 3000&sdata=g5sxcHgiurOW3VNSflYYJ6WDgKHIJu8%2FnNo7l3S4Q2Y%3D& > >res erved=0 > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fli > >st > > s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7C > >to > > ddz%40pgrahamdunn.com%7Cbcf7b99cdd484b02ab9608d97f6fc765%7C5758544c5 > >73 > > f47cebee96c3e0806fb43%7C0%7C0%7C637680941219100279%7CUnknown%7CTWFpb > >GZ > > sb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0 > >%3 > > D%7C3000&sdata=xblPfiQ87FDEtbrEdijFik4CvTXYFDF0SQrT%2F1zulLU%3D& > >am p;reserved=0 > > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author, 1940) > If we desire respect for the law, we must first make the law > respectable. - Louis D. Brandeis > Genes Web page > <https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgene >slinuxbox.net%3A6309%2Fgene&data=04%7C01%7Ctoddz%40pgrahamdunn.com% >7Cbcf7b99cdd484b02ab9608d97f6fc765%7C5758544c573f47cebee96c3e0806fb43%7 >C0%7C0%7C637680941219100279%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDA >iLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=qFDx2b >kDZ0mocFwuWb%2BoS%2FTpjyLfkhWhwZgFvnPJYE0%3D&reserved=0> > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist >s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Ctod >dz%40pgrahamdunn.com%7Cbcf7b99cdd484b02ab9608d97f6fc765%7C5758544c573f4 >7cebee96c3e0806fb43%7C0%7C0%7C637680941219100279%7CUnknown%7CTWFpbGZsb3 >d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C >3000&sdata=xblPfiQ87FDEtbrEdijFik4CvTXYFDF0SQrT%2F1zulLU%3D&res >erved=0 > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
