3 phase converters ?

[chad pickens]

I have to buy a 3 phase converter.I have decided I want a rotary phase converter.I was hoping some of you would chime in on good brands, or your experiances with them, thanks.

 

[Torque1st]

Check here:
http://www.practicalmachinist.com/vb/forumdisplay.php?f=11

 

[kvom]

I bought a panel from Anderson Convertors and used a motor I found locally. Have no problems with either.

 

[toolchaser]

I am running a 5 hp American Rotary Phase Convertor with a remote panel . Super nice people to deal with. I have mine outside in a WP box, but if I had known how quiet it was I would have saved myself the hassle.

 

[Jim Stabe]

You can make one yourself cheap if you scour the electrical surplus stores. I have < $100 in my 7.5 hp one and it works like a champ. I have a schematic and a good article if you are interested.

Jim

 

[chad pickens]

pm sent about plans

 

[RPH]

Post the plans!

 

[Jim Stabe]

Post the plans!

I've tried posting the plans and article on other forums but the file is too large. PM me your email address and I'll send them to you.

Jim

 

[OldCarGuy]

I have two rotary phase converters in my garage. One is a pre-packaged 5 HP CNC style manufactured by GWM. The other is a DesCO Electrical Industry 10 HP. I have them setup to run either one or both in tandem for maximum output. Each converter has its’ own relay so that it will not be back fed when only running a single converter. From this relay cabinet the power is distributed to a three-phase load center with breakers for all my equipment. The three-phase output is 240 Volts and works great for all my machines, except for my 2D Kearney Trecker Rotary Head Mill. That I have a 3KW dry type three-phase transformer that boosts the power to 480Volts.

Watch out what type of idler motor is used. A TEFC verses an open framed idler motor is not important. Particularly in a clean working environment. But from my experience, make sure the idler is 1750 PRM rather than a 3400. The higher RPM motor is louder. However, from what I understand, some applications the higher RPM unit performs better.

GWM is now. http://www.gwm4-3phase.com/products.html
DesCo.. http://www.deselectric.com/price1

 

[mmg440]

You can make one yourself cheap if you scour the electrical surplus stores. I have < $100 in my 7.5 hp one and it works like a champ. I have a schematic and a good article if you are interested.

Jim

I had a pdf of some plans for one I helped with at a friend's small body shop years ago. I cannot find them now. I did a search and cam up with this that looks like the same type of thing. However I have not tried from this sight. It just seems similar for when we did it.



http://www.nojolt.com/how-to-build-a-rotary-phase-converter.shtml

 

[Torque1st]

There are lots of plans and information available at that link I posted in post #2.

 

[mmg440]

There are lots of plans and information available at that link I posted in post #2.

ahh, I see on the first sticky of the page..

I have to bookmark for my reading enjoyment

 

[chad pickens]

I ended up ordering a 5 hp rotary phase converter from Phoenix phase converters.$330.00 to my door with a 3 yr warranty .They have a 24/7 tech line and seem very nice .I was going to build one but this was quicker and alot more confidence inspiring than trying to build it myself. I didn't have alot of luck finding a 3 phase motor cheap either . Oh well thanks for the help guys.

 

[Lil Joe]

You can make one yourself cheap if you scour the electrical surplus stores. I have < $100 in my 7.5 hp one and it works like a champ. I have a schematic and a good article if you are interested.

Jim

Jim, I am new to the site and I interested in your converter plans if you are not to busy I would be forever grateful. Thank you. Lil Joe

 

[rsanter]

I ended up ordering a 5 hp rotary phase converter from Phoenix phase converters.$330.00 to my door with a 3 yr warranty .They have a 24/7 tech line and seem very nice .I was going to build one but this was quicker and alot more confidence inspiring than trying to build it myself. I didn't have alot of luck finding a 3 phase motor cheap either . Oh well thanks for the help guys.

typically a rotary phase converter will run about $100 per HP so that was a good price for a 5hp

bob