gday
i have a 3 phase electic motor that was running on a compressor. just wondering if it can be changed to a single phase. i have a 10cfm but the motor i i have shat it self could it be possible
cheers
air compessor
Started by
red1a
, Jun 10 2006 05:06 AM
13 replies to this topic
#1
red1a
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Posted 10 June 2006 - 05:06 AM
#2
_Oldn64_
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Posted 10 June 2006 - 05:27 AM
It is possible to convert to singler pahse although I would nto recommend it. this would mean the motor woudl not be nearly half of what it was in three phase form. Be cheaper and better in teh long run to buy the right signle phase motor or power the garage with three phase.. 
Cheers
Cheers
#3
red1a
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Posted 10 June 2006 - 05:38 AM
hello
just salvageing old parts all the best
cheers
just salvageing old parts all the best
cheers
#4
_Hotrodder_
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Posted 10 June 2006 - 09:24 AM
There are 3 options here.
1. Change the motor for a single phase unit. These can be picked up at the weekend markets fairly cheaply. I done that last year, got a motor for $40 and it works a treat.
2. If you want to keep the 3 phase motor get a single to 3 phase converter (ive sold quite a few of them over the years)
3. replace the whole compressor unit.
1. Change the motor for a single phase unit. These can be picked up at the weekend markets fairly cheaply. I done that last year, got a motor for $40 and it works a treat.
2. If you want to keep the 3 phase motor get a single to 3 phase converter (ive sold quite a few of them over the years)
3. replace the whole compressor unit.
#5
red1a
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Posted 10 June 2006 - 10:26 AM
can i change 3 phase to single phase
#6
_Torana482HP_
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Posted 10 June 2006 - 02:19 PM
you cant physically change the motor to single phase, but you can run it off single phase using a couple of capacitors, it works in theory but i havent tried it myself.
#7
davelh
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Posted 16 June 2006 - 08:46 AM
in theory communism works, just get 3 phase put on the house / shed, and get a new 3 phase motor
plenty more torque and actually cheaper to run than its single phase copunterpart
you can then invest in that 3 phase drill press, lathe etc that youve always wanted
cheers
dave
plenty more torque and actually cheaper to run than its single phase copunterpart
you can then invest in that 3 phase drill press, lathe etc that youve always wanted
cheers
dave
#8
Dr Terry
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Posted 16 June 2006 - 10:45 AM
Hi davelh.
"in theory communism works"
Good line, can I use that ?
Dr Terry.
"in theory communism works"
Good line, can I use that ?
Dr Terry.
#9
_Torana482HP_
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Posted 16 June 2006 - 05:25 PM
yeah your better off spending $20,000 to get 3 phase to your house.
Single phase 2 3 phase inverter is about $500!
The capacitor method uses 2 certain sized caps to give you the different phase angles for three phase power.
Single phase 2 3 phase inverter is about $500!
The capacitor method uses 2 certain sized caps to give you the different phase angles for three phase power.
#10
_brett_32i_
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Posted 16 June 2006 - 05:39 PM
you can get it running with one cap.
motor runs quite hot on 1 phase
motor runs quite hot on 1 phase
#11
_Torana482HP_
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Posted 16 June 2006 - 05:57 PM
do you know anymore on the subject brett?
#13
_Torana482HP_
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Posted 16 June 2006 - 06:20 PM
do you use the 1 cap to power the other 2 phases?
#14
lakeside
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Posted 16 June 2006 - 06:47 PM
How big is the 3 phase motor? If bigger than 3hp buy another compessor, unless you have plenty for power. Problem with using a sigle phase motor if to big, is the starting current (6X running current), will dim everything on start. Then you have to unload the compessor under start. Electric motors are cheap as, all made in high street china. You can put on 3phase on (around $4000 min, to the avg house)or use a VF drive, run anything expect a welder $$$.
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