Phase Converter Question

[mulepackin]

Just have a question to help me understand phase converters better. Does a phase converter change available voltage, as well as electrical phase? For example, I have standard 220 Volt residential service. I want to operate a machine with a 3 hp, 440 Volt, 3 phase motor. Does the convertor handle both voltage and phase?

 

[930dreamer]

Nope, doesn't change voltage. Would need a transformer to boost to 440V..

 

[mulepackin]

Thats kinda what I thought. Thanks for the quick reply.

 

[rsanter]

chack the motor
some will run 220 or 440

otherwise you will need a transformer.

you might also look into using a VFD
there may be one that will take in 220 and put out 440

bob

 

[Kevin54]

chack the motor
some will run 220 or 440

otherwise you will need a transformer.

you might also look into using a VFD
there may be one that will take in 220 and put out 440

bob

You would want to look the motor over good to see if it can be wired either /or. We have some lathes at work that originally were 440 and the motors had to be pulled, sent out and completely rewired for 220. Very expensive. At least for a DIY'er it would be.

 

[rsanter]

You would want to look the motor over good to see if it can be wired either /or. We have some lathes at work that originally were 440 and the motors had to be pulled, sent out and completely rewired for 220. Very expensive. At least for a DIY'er it would be.

yes, look at the motor plate
I would not rewire, I would just replace the motor if they are 440 only

I have a 1hp 3ph motor if you need one

bob

 

[mulepackin]

I don't think it can be rewired. It is an older Oliver bandsaw I'm considering buying. I haven't seen it but from what I know of them, I don't think it can be done. It has the direct drive "pancake" motor.

 

[Norcal]

I don't think it can be rewired. It is an older Oliver bandsaw I'm considering buying. I haven't seen it but from what I know of them, I don't think it can be done. It has the direct drive "pancake" motor.

Had to wire up a old Tanniwitz 42"? bandsaw that had a 5 hp direct drive motor marked as 220/440 V when opened up the peckerhead there was only 3 wires & the sugar beet mill it came from used 480 volts for everything*, it had to got to a motor shop because where it was going to be used had only 240 V 3 Ø, w/o that motor there was no saw...

*Since the mill ran 480V, there was no reason for them to pay for provisions to connect the motor for other voltages when it went in for a rewind.

There are no VFD's that will step up from 240 to 480V, there are other ways of running 480V off a 240V supply....

 

[JBurgess]

There are no VFD's that will step up from 240 to 480V, there are other ways of running 480V off a 240V supply....

Not cost efective, but....

http://www.pumpconverter.com/

 

[A_Pmech]

Failing a dual-voltage motor, a dry buck-boost transformer suitably sized on the output of the phase converter would be my solution.

Watch Ebay, they come up cheap there.

Then you can have 240V and 480V three phase.

 

[rsanter]

to me its a pain, but you can make a converter by getting a 440 3ph motor and spinning it with a 220 1ph motor. you will also need some wiring to 'light up' the field to get the driven motor working

do a search on the web, I have seen this done several times. one place I worked did this to generate real 50hz power for testing some of the machines

bob

 

[Steve from Socal]

to me its a pain, but you can make a converter by getting a 440 3ph motor and spinning it with a 220 1ph motor. you will also need some wiring to 'light up' the field to get the driven motor working

do a search on the web, I have seen this done several times. one place I worked did this to generate real 50hz power for testing some of the machines

bob

I have to ask how you 440 volts 3 phase from a 220 volt line unless you use a single phase motor to spin a generator?

Steve