Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Discussion Forum

Phase converters

Welcome Guest, Log in or Register
Author 
Mark Lynch

09-12-2002 13:05:37




Report to Moderator

Does anybody know how to run a 3phase motor off of single phase? 220v single to 220/240v 3 phase.

Any info would be appericiated.




[Log in to Reply]   [No Email]
Bus Driver

09-14-2002 10:58:17




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
My opinion is that the absolute best way to convert single phase to three phase is with a VFD- Variable Frequency Drive. Some manufacturers call them inverters. Small, quiet, extremely efficient and versatile. Gives a better three phase for motors than the other types of convertors. If using with single phase input, get a VFD with about 1 1/2 times the HP output of the motor you are using- a 3HP motor would use a 5HP VFD. Look for VFD on eBay- many of those sellers also have Websites and sell directly. Mine will furnish 3 phase output at any frequency I desire from .1Hz to 400Hz in increments of .1Hz. My milling machine motor works well from 40Hz to about100Hz so that gives me lots of speed ranges.

[Log in to Reply]  [No Email]
T_Bone

09-13-2002 22:00:29




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
Hi Mark,

You might want to read up on poly phase (A true 2-phase 230v circuit) and how "run" capictors effect voltage waves or phase angles. You will find some very interesting reading that will lead you too what your looking for, cheap.

A true single phase is a 115vac circuit!

Just be very careful when you start to think you understand what you read and apply that to high voltage as high voltage is very unforgiving and it can kill you deader than a door nail. :)

T_Bone

[Log in to Reply]  [No Email]
Chris mf35

09-13-2002 18:55:37




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
the's the link i've posted before for building a rotory convertor.
Link



[Log in to Reply]  [No Email]
Jim WI

09-13-2002 10:03:01




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
Also consider using a variable-frequency AC drive. They've come down in price dramatically over the years.

What's the current rating on the motor?



[Log in to Reply]  [No Email]
TimC

09-13-2002 06:34:18




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
You could buy a phase-o-matic for a couple hundred bucks to start a 3 phase motor with 220 single phase.

It is cheaper to use a 220 motor and short belt to start a spart 3 phase motor, release the tension on the 220 motor and let the belt fall off in the floor. The spare wires coming from the three phase motor that is also setting in the floor, running by being started manually, will produce the third phase you need to run your equipment.

Sound crazy but, i know of one machine shop a buddy runs from his home that has a crank grinder, power hone, 2 boring machines, hot tank, and numerous other machines running and he has never had a problem. He spent the money on the Phase-o-Matic so he doesn't have to deal with the belts and 220 motor to start his 3phase motor that creats the third phase.

Sorry about putting this in first graders terms by i couldn't draw it out and make a picture.

[Log in to Reply]  [No Email]
G Taylor

09-13-2002 06:15:36




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
If getting a three phase service installed or converting/re-winding the motor to single phase the results will better/less fuss. A solidstate three phase variable frequency drive will allow variable speeds,soft start and reversing. A rotary convertor does work, can have spin up problems and requires capacitors to reduce phase shifts and over heating on one phase leg.



[Log in to Reply]  [No Email]
DaveInMI

09-13-2002 04:39:14




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
Lindsay Publications has a little book explaining how to make your own, both static and rotary types.



[Log in to Reply]  [No Email]
Bob

09-12-2002 20:32:56




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
ENCO is one source.

Link

They're on page 190 of their on-line catalog.

You need Acrobat reader to access the catalog.

Search for Item #297-3510. That should take you to the proper page where there are other models listed also.



[Log in to Reply]  [No Email]
LeeJon

09-12-2002 19:11:37




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
I have used one for 20 yrs.,static and rotory type Favor the rotory.When you purchase one, the hook up instructions come with it. I'm not a certified electrician but have a fair knowledge about it. I hooked both up with no problems. One thing to remember is don't use the third phase for the on off switch. This was a caution on the hook up instructions. If you have no instruction you had better contact
a knowledgable electrician.

[Log in to Reply]  [No Email]
Light Bulb

09-12-2002 18:19:43




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
Take a look around your area and see if there are any 'coyote' welder repair people. Word has it they are good with electrical repairs and modifications to motors, welders, electrical controls, etc.



[Log in to Reply]  [No Email]
VaTom

09-12-2002 17:12:18




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
A search of this site for "phase converter" will give you the links you're looking for. I've been running one or another for the last 20 years. Make sure it's a rotary, not static, if you have a newer tool.



[Log in to Reply]  [No Email]
JMAC

09-12-2002 15:53:13




Report to Moderator
 Re: phase converters in reply to Mark Lynch, 09-12-2002 13:05:37  
MARK, GET ON THE INTERNET,I USE GOOGLE AS A SEARCH ENGINE, TYPE IN PHASE CONVERTERS, YOU WILL GET ALOT OF BUSINESSES COME UP BUT IN THERE WILL BE A FEW ACTUAL SITES(INDIVIDUALS) WHO HAVE POSTED ON THE NET THE ACTUAL PLANS FOR MAKING ONE. JUST DOWNLOADED A COUPLE MYSELF THE OTHER DAY.
GOOD LUCK!



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy