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Plans for a Rotary

Phase converter???

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Robert in Md.

04-16-2001 18:12:34




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Just bought a 20" wood planer with a 5 HP, 3 phase motor on it. I understand if I put a static phase converter on it I will lose about 25% of the power. I need all 5 Hp or more. Where can I find detailed plans to make a phase converter from a three phase motor that will yield full power? Three phase power it too far away.Thanks ,Robert.




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rhudson

04-18-2001 05:55:43




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 Re: Plans for a Rotary - Phase converter??? in reply to Robert in Md., 04-16-2001 18:12:34  
Lindsay Publishing Co. has a booklet that explains how to build several phase converters. and other "stuff" by the way. they reprint alot of turn of the century manuals. www.lindsaybks.com



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Tools

04-17-2001 18:55:03




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 Re: Plans for a Rotary - Phase converter??? in reply to Robert in Md., 04-16-2001 18:12:34  
Robert,

Here's what you need. Courtesy of this bulletin board I believe some time ago. Just about have all the parts ready to start assembly myself. Had the magnetic switch and motor on hand, purchased the rest from Grainger very reasonably.

Tools



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tools

04-17-2001 18:58:25




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 Re: Re: Plans for a Rotary - Phase converter??? in reply to Tools, 04-17-2001 18:55:03  
Ok, fine, so I can't figure out post a link. Here's the url out of my notepad.

Link


Tools



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Chuck Hilton

04-17-2001 10:08:16




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 Re: Plans for a Rotary - Phase converter??? in reply to Robert in Md., 04-16-2001 18:12:34  
Hi Robert, I built a rotary phase conv a while back and it works great. I found the plans on a web site but I can't remember where right now. They claim that after output circuts are balanced it should be about 95% efficient. The electric motor you need can usually be found at a scrap yard for scrap price. The capacitors are not very expensive purchased new. If you know a commercial electrician they sometimes come across magnetic switches from take outs or upgrades. These switches can be very expensive purchased new. If you can't find a schematic on the web E-mail me and I will redraw mine for you. Good Luck Chuck Hilton [email protected]

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ltf in nc

04-16-2001 21:09:25




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 Re: Plans for a Rotary - Phase converter??? in reply to Robert in Md., 04-16-2001 18:12:34  
Robert, check your e mail for a sketch of what you requested



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Ray,IN

04-16-2001 21:58:50




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 Re: Re: Plans for a Rotary - Phase converter??? in reply to ltf in nc, 04-16-2001 21:09:25  
Look at this link:



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Ray,In

04-17-2001 22:28:52




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 Re: Re: Re: Plans for a Rotary - Phase converter??? in reply to Ray,IN, 04-16-2001 21:58:50  
Well it looks like the internet is like bragging on my coon dog. Just when you are in the middle of bragging they make you out a liar. I cannot get the link to work even though I type it exactly as displayed in my address bar. I did find the site by searching for the author, "George Carlson", he lives in Houston TX. The article is from a presentation he did for the Houston home metal shop club.

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VaTom

04-16-2001 19:51:00




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 Re: Plans for a Rotary - Phase converter??? in reply to Robert in Md., 04-16-2001 18:12:34  
Static converters, in my experience, are junk. Tend to make newer motors run very hot. But even the rotaries, which I use, won't give you full power. You're still going to lose 15-20%. The only way you can get full hp is to have full three phase, either from the power co. or from generating your own. I do that too, but only for my huge planer with dust system or the wide sander, tools that don't get a lot of hours. Any chance you could put on a larger motor so the loss wouldn't bother you? At least you're on track, to make your own converter rather than spending a lot of cash.

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