What Do I Need For My 5hp 230V Spindle?

[lukebarber]

I used to power it with 230V 3 phase, but I am running out of a residential garage now, so the static controller will not work. I assume I will need another controller.

I am not sure about 230v single and 3 phase, although from what I have read the 230v available in a residence will be single phase.

Will this unit work?

 

[American Locomotive]

That document describes a variety of different units. But yes, you couls use a VFD or a rotary phase converter.

 

[larry_g]

Not sure what kind of machine this spindle is on? If only one motor and no control circuits then a VFD might work. If it has control circuits or multiple motors then you are going to need a true phase converter.

lg
no neat sig line

 

[wyliesdiesels]

Static converters are a bad idea IMO because they single phase the motor after startup...

 

[rnscustom]

You need a rotary phase converter . Usually double the size of the motor , 10hp for a 5 hp motor , not sure on voltage here residential is 220 , I bought a used compressor that had a 230v motor and to ran hot and finally cooked

 

[rnscustom]

For motors static is not a good idea , I think you loose 1/3 of the motors power

 

[wyliesdiesels]

You need a rotary phase converter . Usually double the size of the motor , 10hp for a 5 hp motor , not sure on voltage here residential is 220 , I bought a used compressor that had a 230v motor and to ran hot and finally cooked

Nominal voltage in US is 120/240 NOT 110/220.

And that doesnt make sense about your motor.

Motor ratings are 115/230/460/575....

And running a 230v rated motor on a 240v supply will actually help it run cooler since it will draw less current.

There was something else wrong with your motor if it was running too hot...

For motors static is not a good idea , I think you loose 1/3 of the motors power

That is because one leg is dropped after startup.

 

[Furd50]

Before the advent of reasonably priced variable frequency drives (VFDs) I made several static converters to run three-phase motors on single phase power. I never had a bit of trouble with them.

For motors static is not a good idea , I think you loose 1/3 of the motors power

This is true IF you merely connect the output of the capacitors to a standard 9-lead motor. However, if you re-connect the motor to a NEMA 12-lead standard you can then connect it as a capacitor start/capacitor run motor and be able to draw 100% power on a continuous basis without overheating. My conversions were used on air compressors, lathes, milling machines and the like. They probably did not have the same starting torque as when run on three-phase but again, I never heard of any problems and I never experienced any problems on my own equipment. The ONE downside is that they were no longer instantly reversible.