3 phase -> Single phase? 3

[nwb403]

I have a three phase motor running a piece of woodworking eqiupment, and cannot get access to three phase power.
On the motor plate, it states:
220/380V
5.9/3.4A
It is possible to rewire this motor to run on single phase (220V)?

Thanks!

 

[rbulsara]

No, but you may consider buying an electronic inverter that converts sigle phase to 3 phase.

or replace the motor with a sigle phase motor, for such a small size motor it may be more economical option provided mechanically the new motor fits in the existing apparatus.

 

[hacksaw]

you might find that the motor/generator sets are more economical. they use single phase motor to turn a three phase generator. The shop sized units are self contained and work just fine. Shop around on the used / surplus equip. market. They are readily available.

Do not try to operate a polyphase motor on single phase. It will only damage the unit.

 

[jbartos]

Suggestion: Start with a simplest and reliable solution. It is the single phase motor. The existing three phase motor can be trade in.
Visit

http://www.thomasregister.com

and type Motors: Single Phase under Product or Service, which will return 87 companies to approach to for a deal

 

[ScottyUK]

Your motor appears to be about 2.2kW, which is the largest common rating of a 1-ph / 3-ph inverter for connection to a 240V 1-ph source in Europe. I'm not sure what the largest common rating is for the US market.

One problem you may well find with trying to replace a 3-ph motor with an equivalent 1-ph motor is that the 1-ph machine will be significantly larger, and may not fit within your machine.





-----------------------------------

Start each new day with a smile.

Get it over with.

 

[rsdoran]

If you have the time you can develop a 3 phase system. Checkout this:

http://www.patchn.com/3phase1phase.html

 

[hacksaw]

the motor/gen sets are common in this area where the machines are of european origin. good luck

 

[amptramp]

Use an AC drive (inverter). For this size motor, a basic volts/hertz drive will be relatively inexpensive. Don't forget to derate the drive.

 

[jbartos]

Comment on rsdoran (Electrical) Mar 4, 2004 marked ///\\If you have the time you can develop a 3 phase system. Checkout this:

http://www.patchn.com/3phase1phase.html

///The motor for the three-phase power source will not be symmetrically loaded; therefore, at full loading it could experience negative effect due to internal harmonics, elevated temperature, etc.
The power quality of this source should be tested. If the power quality is not adequate, suitable treatment to improve the power quality will be necessary. This is not an inexpensive proposition in comparison to the off the shelf single phase to three phase electronic AC-DC-AC fixed frequency converter.\\\

 

[macmckim]

I would suggest purchasing a VFD inverter and use it as a phase converter. There are many brands in the market place offer single phase input with 3 phase output. The upside you then have variable speed woodworking machine, & depending on what type of machine, might help on some your projects.

 

[advidana]

sell you equipment on e-bay and purchase the correct phase equipment.

 

[jbartos]

Suggestion: Try to obtain the prospective single-phase motor dimension and fit first. If it does not work out, then the single-phase motor drive with three phase output or AC-DC-AC converter will be required. If the converter is rated higher, the output may be used for other three phase loads that may come in the future. It may or may not be that bad deal.

 

[aolalde]

I agree with jbartos, the proposed solution at

http://www.patchn.com/3phase1phase.html

is complicated and expensive and will not provide a balanced three phase output voltage. That unbalance voltage will be detrimental for the operation and life expectancy of a three phase motor.
The single phase to three phase electronic converter seems to be the more simple and lower cost solution.