Putting the cart before the horse…..Three Phase power question???????

Runs With Scissors

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L2501 TLB , Grappel, Brush Hog, Box Blade, Ballast box, Forks, Tiller, PH digger
Jan 25, 2023
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Michigan
OK fellas, I finally “stepped up to the plate” and bought a Bridgeport. I still have to get it in the basement, but when I do, I have to power it; So I am trying to “think ahead” a little and formulate a “plan of attack”.



Like most people, I obviously have single phase power, so I am going to have to “make my own” 3 phase power to run it.

I have done some initial investigating on my options, which I believe to be the following.

A) Use a Digital Phase converter.

B) Use a Variable Frequency Drive.

C) Use a single phase, 220 volt motor to turn a 3 phase motor, thus creating “actual” 3 phase power.


I have some “very basic” understandings of these options, but would like some opinions/reasons from y’all.



I am curreently leaning towards a VFD.

My reasoning is that a VFD will allow for ‘speed control”; So I can put the machine in “fast gear” and control the motor speed (i.e. slow it down) with the VFD, and they seem very reasonably priced.

My current understanding is that a Digital Phase Converter will not allow for “speed control” , and option “C” seems unnecessarily complicated, and expensive, and will also not allow for “speed control".


Is my reasoning sound?

I am open to other suggestions/ideas/options as well.
 

ken erickson

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B7100 hst, 2650 front mount snowblower, L2501 hst qa loader
Nov 21, 2010
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Waupaca Wisconsin
I ran a 1HP step pulley Bridgeport mill for a decade with a static phase converter in my Gunsmithing business with good results. My understanding is you will lose about 1/3 of the rated horse power. For my work at the time not an issue.

I currently have a static phase converter on my Harig Super 6-12 surface grinder with equally good results.

I have 3 VFD single phase converters running various knife making grinders. Two 2 x 72 belt grinders and a 8 inch disk grinder.

I WISH I would have had a VFD on the Bridgeport.
 

Bee-Positive

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BX1880, FEL, Tooth Bar, MMM, QH, Ballast Box
Nov 16, 2022
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Amsterdam, NY
Check the motor specs that comes with the unit. Do a search on "VFD motor compatibility".

Read this...


or this

 
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