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3520A elc. 3ph to 1ph

D

daniel goulding

Joined
Nov 26, 2008
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Location
metro chicago
hi; ive have a problem. i got a 3ph 3520 powermatic, , so so excited i thought it was a 1 ph. can it be change ? on lable dosent say,i barly have 220 in my place, so a ph conventer is out i think, ;mayby i can swap some one? if i cant switch it over,or worse case, buy a new motor yeps.or used, wonder if a jet 16-42 110 would work? dan;with a powermatic that i cant turn on, p.s. im calling powermatic. tec service monday
 
The powermatic is 220v single phase. The motor is a 3phase motor but the 220 input is converted to 3 phase by the motor controller. This also gives you variable speed and electronic braking.
 
3520a

A friend of mine has the 3520A, and I can also confirm that it takes only 220V single phase going in to run the whole deal.:)
 
3520a

Why would you want to drop down to a motor just a quarter-horse more than a mini lathe on such a wonderful machine? After pricing elect. motors, you might find it cheaper to run a 220 circuit cheaper than a new motor.You couldnt tackle anything above 8 in. in diameter with that little pony.My advice, no charge, thank you.
 
3520a

daniel goulding said:
hi; ive have a problem. i got a 3ph 3520 powermatic, , so so excited i thought it was a 1 ph. can it be change ? on lable dosent say,i barly have 220 in my place, so a ph conventer is out i think, ;mayby i can swap some one? if i cant switch it over,or worse case, buy a new motor yeps.or used, wonder if a jet 16-42 110 would work? dan;with a powermatic that i cant turn on, p.s. im calling powermatic. tec service monday
Click to expand...

Dustpan,
If you will re-read the original post, I believe you'll find that he was talking about 3 phase (ph) vs. 1 phase, instead of horsepower.
 
well well

hey; guys thanks 4 all the input; is relive my mind a ton, ill just run a 220 single phase line 4 it. thank goodness it not 3 phase! THANK YOU EVERYONE, Daniel.Goulding; ps. hope to turn somthing this week, after i get a line run.
 
tust to let you;know

well, i also call powermatic tec.service because when i hook it up. i could only jog, the lathe moter ; the guy their sent me via.e-m a 3520a manual, with the wire dig. sadid to take the panel off the converter panel, & low& behold, 4 wires loose! i was able able to rewire it acc. to specks, no hassles & it now runs supper, but i didnt get a tool rest anybody have one to sell? any size will do that for a powermatis 3520, or 3520A orB but not shure, but i have a great lathe but ha, ha, cant turn at all! thanks every one ,for all info. on these lathes ,i read several post here & even went to the mustard monster sight, i found here just GREAT. daniel in metro chicago
 
Do you have the banjo (just missing the tool rest) or nothing at all?
 
Here are my favorite tool rests. http://bestwoodtools.stores.yahoo.net/tbarmodtools.html

However I don't use the "modular" feature; just by a post for each rest you need.

BTW, some people do not like round rests like these because your tool is a little further from the work. I've never had a problem.
 
daniel goulding said:
hi; ive have a problem. i got a 3ph 3520 powermatic, , so so excited i thought it was a 1 ph. can it be change ? on lable dosent say,i barly have 220 in my place, so a ph conventer is out i think, ;mayby i can swap some one? if i cant switch it over,or worse case, buy a new motor yeps.or used, wonder if a jet 16-42 110 would work? dan;with a powermatic that i cant turn on, p.s. im calling powermatic. tec service monday
Click to expand...

daniel goulding said:
hey; guys thanks 4 all the input; is relive my mind a ton, ill just run a 220 single phase line 4 it. thank goodness it not 3 phase! THANK YOU EVERYONE, Daniel.Goulding; ps. hope to turn somthing this week, after i get a line run.
Click to expand...

Don't feel bad ... a lot of guys have been confused over this issue and wondered whether they have made some sort of mistake in getting the wrong model lathe. It would help things a lot if Powermatic and others would just forget about advertising that their machine uses a three-phase motor because it only serves to confuse a lot of people. At the very least they ought to make it clear that the machine runs off of 240 VAC single-phase power.

daniel goulding said:
just missing tool rest, have the banjo; daniel
Click to expand...

If it is a new machine, then contact Powermatic and tell them that the tool rest was missing.
 
Last edited:
3520 Tool Rest

daniel goulding said:
just missing tool rest, have the banjo; daniel
Click to expand...

Both A and B use the same rest. Different Banjos. You need a 1 inch post x 6 inches high. The standard is a 14 inch long rest. PM offers a 4 inch long rest and 2 curved bowl rests.

I have looked at the Robust 6 inch long rest. The Robust style rest has had much praise.

John :)
 
john lucas said:
The powermatic is 220v single phase. The motor is a 3phase motor but the 220 input is converted to 3 phase by the motor controller. This also gives you variable speed and electronic braking.
Click to expand...

John... I know this is an OLD quote! will be amazed if your still around but...
I just bought a P-90 it has a sticker on the back... 208 V three Phase
could it also be run on 220 single Phase like you stated above?

mikeh
 
3520

Mike,
If there is no VFD, Variable Frequency Drive, which would be highly unlikely on a PM 90, then 208 three phase means just that! :)
 
boehme said:
It would help things a lot if Powermatic and others would just forget about advertising that their machine uses a three-phase motor because it only serves to confuse a lot of people. At the very least they ought to make it clear that the machine runs off of 240 VAC single-phase power.
Click to expand...

YES! Also for the Jet 1642's. And anyone else that makes EVS machines. What a novel idea, clarity in advertising.
 
I just had to look at the 3520b brochure, it states that the motor is - 2HP, 1Ph or 3 Ph, 230V. I kind of remembered that it stated that when I purchased mine as I was aware that it ran on 220V by reading that.
 
Bill Blasic said:
I just had to look at the 3520b brochure, it states that the motor is - 2HP, 1Ph or 3 Ph, 230V. I kind of remembered that it stated that when I purchased mine as I was aware that it ran on 220V by reading that.
Click to expand...

So ..... you expect us to believe that you actually read the brochure and knew what you were getting before you bought it? ..... hrmph! ..... We weren't born yesterday, you know. :D
 
What you might find harder to believe is that I told my wife that this was going to be my stepping stone between my DVR3000 and the American Beauty lathe. After using the 3520b for one session I informed my wife that I do not think that I will need another lathe and every time I use it that feeling is reinforced.:D :D :D
 
Bill That's blasphemy you realize. Just the thought that someone doesn't want a bigger lathe gives me the shivers. :) I'll admit however that even though I drool over the Stubby's and Robust, etc. I really don't think I will ever need anything nicer than my Powermatic.
I do use a Robust tool rest on my Powermatic and may buy another longer one from him.
 
How to make a fool of yourself

Daniel,
If you are feeling a tinge of embarrassment about this you may enjoy my story.

A few days after I had my Jet 1642 installed and running great on a 15 amp 115 volt circuit, I happened to look at the label on the motor. It said 3 phase 208 volt.

Now I'm known to be a stickler for details, and something of a smart a*$ I considered it very tacky that a company would produce a fine product like my 1642 and then be inept enough to put the wrong label on it. So I sent a rather sarcastic message to Jet and cc'd the Woodcraft store where I bought the lathe telling them how I felt about it.

The next day I received a reply from the Woodcraft store saying something like... eerrr, Sir. Not sure how to break this to you, but that errrr, Sir, that is a 3 phase motor.

Gulp.
 
mikeharvey said:
John... I know this is an OLD quote! will be amazed if your still around but...
I just bought a P-90 it has a sticker on the back... 208 V three Phase
could it also be run on 220 single Phase like you stated above?

mikeh
Click to expand...


Mike, No you have an old industrial lathe. The new lathes use a three phase motor, with a variable frequency drive. You could add the drive/converter, but it won't be cheap. The lathe is not worth that kind of expense IMO. Use the mechanical VS that the lathe has.

John
 
The old three phase motors that do not have at least class E (class F or H is preferable) rated winding insulation may not hold up well in VFD service. The power to the motor is in the form of a pulse width modulated high frequency (typically between 2.5 kHz and 8 kHz) that produces rough approximation to three phase alternating current. The motor represents an inductive load to the driver so each time that it switches off, a high voltage transient is produced that can be over a thousand volts -- enough to punch through the thin Formvar insulation on the windings of older motors not rated for that type of service. This type of failure mode is slow and insidious so it may go unnoticed for a while until you are aware that the motor seems to be running hotter than usual and not producing as much power output anymore. Additionally, running an ordinary three phase motor designed strictly for 60 Hz operation at speeds that are much faster or slower can lead to an early demise of the motor. At high speeds, iron losses are the main problem and at low speed, inadequate cooling by the motor's internal fan is the main problem.
 
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