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Thread: 2 phase 240 volts?
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25th February 2008, 06:15 PM #1
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2 phase 240 volts?
I've got a welder here that requires 2 phase 240 volts, would it be possible to get this to work from a single phase 240V outlet?
Any info would be great.
Thanks
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25th February 2008, 07:20 PM #2
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welder
I've got a welder here that requires 2 phase 240 volts, would it be possible to get this to work from a single phase 240V outlet?
With a transformer welder generally the voltage is the issue not the requirement for 2 phases. Higher voltage(2 phase) is used to reduce the amperage on the primary winding and hence reduces the size of the copper windings on the primary side of the transformer and the supply cable.
cheersJuan
"If the enemy is in range, so are you."
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25th February 2008, 07:40 PM #3
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25th February 2008, 07:50 PM #4
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25th February 2008, 08:13 PM #5
Beware: There is more than one type of 2 phase!!!!
You need to know exactly what sort of 2 phase it is.
In the bush we are on a SWER line that has a centre tapped 480V secondary.
This gives out 2 phases of 240v each that are exactly 180° out of phase.
You get 480V if you get between the 2 actives.
In a normal city supply, the poly phase supply is 3 phase with each phase 120° out of phase with each other phase.
This will give you 415V between 2 of the actives.
DO YOUR HOMEWORK CAREFULLY.Cliff.
If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.
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25th February 2008, 08:19 PM #6
Power supplied on ships is 240v 2 phase with no earth as are some building sites using transformers to supply power ( for safety reasons ) rather than mains power. I think ( and am reasonably sure that ) you would be fine using normal domestic power of 240v otherwise check the welders manufacturers web page if possable or if they have a contact try that
Ashore
The trouble with life is there's no background music.
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25th February 2008, 08:27 PM #7Cliff.
If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.
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25th February 2008, 08:38 PM #8
Not realy up on what the navy use cliff mabye they have their own dedicated power supply for the important stuff, but us poor travelers in steel the standard Australian power supply is 240v 50 hz , which was a pain if you got anything with a 60 hz clock in it
Ashore
The trouble with life is there's no background music.
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25th February 2008, 08:57 PM #9
2 phase was/is 480v, at least in the welding trade.
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25th February 2008, 09:16 PM #10
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480v
I am surprised to hear about 480v 2 phase being the standard for welders? Have not worked with them for years but they were all 415v in my day.
Juan
"If the enemy is in range, so are you."
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25th February 2008, 09:25 PM #11
Weather single phase , 2 phase or 3 phase the voltage depends on the generator/ alternator producing the power . but 2 phase being 480 volts , not when I was welding ,
Ashore
The trouble with life is there's no background music.
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25th February 2008, 09:26 PM #12
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Ok, this is what it says in the documents.
Can be run on 240, 415, 480 or 380 input voltages.
Then there is a table with Phase: 2
Cycles (Hz): 50
The input voltage is configured by bridging some terminals.
Will this run on single phase?
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25th February 2008, 09:32 PM #13
Photo Please
To your question.....YES!
Just get the Wiring/connections correct.Navvi
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25th February 2008, 11:47 PM #14
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25th February 2008, 11:55 PM #15
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