3 phase to single phase

[boots]

So I am looking into a lathe and milling machine for my shop at home. The machines are 3 phase and my shop is single phase. What is the cheapest way to get these machines to work. My uncle was telling me about an inverter or swapping the motors but he figured to find the motors would be too hard. Any ideas thanks.


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[Pistonbroke]

Your best route is to put in a Variable Frequency Drive, or VFD for short. This has a few benefits, and the costs aren't that bad at all really. You will feed the VFD 1-phase, and it will produce 3-phase for you.
-forward and reverse no problem
-full, infinite variable speed
-regular stop as well as E-stop (crash stop) inputs usually available even on lower end drives

I think for less that a grand per machine you can be up an running, and better than that 1-speed motor you are running now.

Good luck!
PB

 

[Highfly]

I had a custom Kent Surface grinder made for me with single phase motors. It was cheaper for me to go that route vrs. three phase diesel generator. (I'm mobile), went with single phase generator.
Contact the manufacturer, you never know. I was blow away when they gave me the option.

 

[heavy d]

x2, alot of these drives are suprisingly affordable now days.

Your best route is to put in a Variable Frequency Drive, or VFD for short. This has a few benefits, and the costs aren't that bad at all really. You will feed the VFD 1-phase, and it will produce 3-phase for you.
-forward and reverse no problem
-full, infinite variable speed
-regular stop as well as E-stop (crash stop) inputs usually available even on lower end drives

I think for less that a grand per machine you can be up an running, and better than that 1-speed motor you are running now.

Good luck!
PB

 

[rider4life]

Your best route is to put in a Variable Frequency Drive, or VFD for short. This has a few benefits, and the costs aren't that bad at all really. You will feed the VFD 1-phase, and it will produce 3-phase for you.
-forward and reverse no problem
-full, infinite variable speed
-regular stop as well as E-stop (crash stop) inputs usually available even on lower end drives

I think for less that a grand per machine you can be up an running, and better than that 1-speed motor you are running now.

Good luck!
PB

X3 depending on the size of motor you can get decent VFD's for as little as $150

 

[craptabulous]

Your other option is an add a phase , cheaper , simpler and more efficient . You cant varry the frequency though.

 

[lloydguy]

An old Carpenter friend of mine has 1 VFD running almost everything in his shop.Drill press,Lathe,mill,ect.
SWEET set up.Forward,reverse and variable speed.

 

[bobsledder]

Rockwell Powerflex drives work very well. Westburne has embedded Rockwell drive specialists that can help you size. These are current source drives so size based on fla of machine not hp size of motor.

 

[gotboost]

you can buy a roto phase makes single phase into 3 phase power had one on our ice plant for the curling rink

 

[gotboost]

[h=1]CNC Roto-Phase[/h]The CNC series convertor was developed in the early 1990's when CNC (Computer Numerical Controlled) equipment began to flood the machinery market. Most standard or heavy-duty phase convertors on the market are not capable of providing the variable speed drive motors of machinery. The CNC series phase converter is able to provide a stable "phase-to-phase" volting condition which is between 1-2% under all loading conditions on three-phase equipment. Unlike our competitors, who use tranformers or capacitor switching via manual switches and contractors, the CNC series converter does not depend on these types of devices which could cause a potential maintenance concern. The CNC series Roto-Phase converter has been field-tested and proven reliable for years. It is truly like any other phase converter on the market because of its capabilities to provide good starting torque and necessary voltage tolerances of 5% or less to the three-phase equipment load. From precision work on CNC machine tool and EDM equipment to lasers used for eye surgery, the CNC Roto-Phase converter is the most reliable on the market. When three-phase power is not available from the utility company or is not economically feasible, then the ARCO Roto-Phase is the best substitute. CNC Roto-Phase converters are available from 1 to 50HP sizes. FOR LARGER SIZES, PLEASE CONSULT FACTORY.
A single phase "Buck & Boost" tranformer may be required for use in conjuction with the phase converter and three-phase equipment, when the single-phase supply voltage from the utility company is higher than then voltage tolerance requirements for the three-phase equipment. CONSULT FACTORY.

 

[bobsledder]

CNC Roto-Phase

The CNC series convertor was developed in the early 1990's when CNC (Computer Numerical Controlled) equipment began to flood the machinery market. Most standard or heavy-duty phase convertors on the market are not capable of providing the variable speed drive motors of machinery. The CNC series phase converter is able to provide a stable "phase-to-phase" volting condition which is between 1-2% under all loading conditions on three-phase equipment. Unlike our competitors, who use tranformers or capacitor switching via manual switches and contractors, the CNC series converter does not depend on these types of devices which could cause a potential maintenance concern. The CNC series Roto-Phase converter has been field-tested and proven reliable for years. It is truly like any other phase converter on the market because of its capabilities to provide good starting torque and necessary voltage tolerances of 5% or less to the three-phase equipment load. From precision work on CNC machine tool and EDM equipment to lasers used for eye surgery, the CNC Roto-Phase converter is the most reliable on the market. When three-phase power is not available from the utility company or is not economically feasible, then the ARCO Roto-Phase is the best substitute. CNC Roto-Phase converters are available from 1 to 50HP sizes. FOR LARGER SIZES, PLEASE CONSULT FACTORY.
A single phase "Buck & Boost" tranformer may be required for use in conjuction with the phase converter and three-phase equipment, when the single-phase supply voltage from the utility company is higher than then voltage tolerance requirements for the three-phase equipment. CONSULT FACTORY.

Current source drives do not use capacitors as voltage source drives do. They use a series reactor.
VFD's increase efficiency of the system and reduce operating costs when compared to old rotary converter technology