3 phase eletric motor

[catyak]

Hi I have a 25HP electric motor that i need to run from a mobile unit with 110 and 240 volts can this be done hope you can help thanks john

[Hymie]

Yes, you need something like this:-

http://www.fwb.co.uk/mall/productpage.cfm?stor e=FWBGroup&productid=EAX204

Input is 230V single phase, output is 3 phase (based on a 230V single phase). You will need to find a unit compatible with your motor ratings. They are not cheap - it might be cheaper to replace the 3 phase motor, or buy a 3 phase generator.

[buildersmate]

Good idea in concept, but unlikely to work on this occasion.
Let me explain. 1HP is about 750W, so 25HP is close to 19kW.
This is a hugely powerful motor and a three phase converter is going to be large and humongously expensive.
Better to find a single phase motor - but it is going to need a substantial cable to feed it.

[john91]

And to use an inverter on 230v your motor would need to be wired as delta not star, not all motors can be.

[ChuckFickens]

as Buildermate says, a 25HP motor is a hugely powerful motor, so although I can't offer any advice other than that already said...but

I am curious, what on earth are you running with a 25hp motor in it?

[ianmunt]

Perhaps youmean a 2.5 HP

[buildersmate]

Good thought Ian. But as so often on these occasions the question asker just disappears into oblivion with no further comment or even a word of thanks.
We will never know.

[catyak]

Hi thanks all for your help the motor ran a compressor may just see if i can sell it thanks again jj

[ChuckFickens]

I'm thinking it might be a 2.5hp motor, unless it was a really really huge compressor!

[buildersmate]

I think you are right, CF.

BYW, what is it about chickens that you find so irresistible?

[catyak]

No sorry it,s a 25hp 165kg if any one is looking for one can let you have the spec thanks again all

[Disco Fever]

If it's 25 HP then it's an old motor as new ones are now KW....