Previous in Forum: Looking for a circuit to adjust the reverse phase signal   Next in Forum: Transformer Prices
Close
Close
Close
6 comments
Rate Comments: Nested
Participant

Join Date: May 2008
Posts: 1

Electrical

05/13/2008 3:43 PM

Can i run a 3 phase electric motor on a 220 single phase?

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Guru
United States - Member - New Member Engineering Fields - Power Engineering - New Member

Join Date: Sep 2006
Location: California, USA, where the Godless live next door to God.
Posts: 4665
Good Answers: 804
#1

Re: Electrical

05/13/2008 7:55 PM

Sure. It will not start and it will eventually burn up if you load it more than about 1/3 of it's rating, but if you give it a kick start it will keep turning for a while with that reduced load.

__________________
** All I every really wanted to be, was... A LUMBERJACK!.**
Register to Reply
Associate

Join Date: Apr 2008
Posts: 33
#2

Re: Electrical

05/13/2008 8:35 PM

Is it 480V or 208V and how many horsepower?--either way I wouldn't unless you get a VFD or some kind of phase converter.

Register to Reply
Member

Join Date: Jan 2008
Posts: 5
#3

Re: Electrical

05/13/2008 9:44 PM

3 phase electric motor will run 220 single phase by using capacitor for starting

Register to Reply
Associate

Join Date: Apr 2008
Posts: 33
#5
In reply to #3

Re: Electrical

05/18/2008 2:33 AM

I'm not so sure about that--I will be finding out tomorrow as I have 208V A/C unit and will be looking into wiring it for 240V.

208V has two legs that are 120v to ground--exactly the same as 240V, except that 240V legs are polar opposites(180 degrees apart) and 208V are 120 degrees out of phase.--We'll see.

Register to Reply
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#4

Re: Electrical

05/14/2008 7:52 AM

Quite happily, if a correctly-sized 1Φ to 3Φ inverter is used.

__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Associate

Join Date: Apr 2008
Posts: 33
#6

Re: Electrical

05/19/2008 11:19 PM

--If it is 208v single phase, yes(which is two of three 480v legs, but still single phase). I cleaned and examined my 208V A/C unit and found it to be labeled for 240V also, without any wiring changes, so I tried it with a widow maker and it ran slightly imbalanced, but had low amps and performed well.--

A three phase motor can be wired Y or Delta and either way it has even coils between the three T leads.

Register to Reply
Register to Reply 6 comments
Copy to Clipboard

Users who posted comments:

JRaef (1); PWSlack (1); superman27532003 (1); user-deleted-7 (3)

Previous in Forum: Looking for a circuit to adjust the reverse phase signal   Next in Forum: Transformer Prices

Advertisement