robertlaurenson
Plastic
- Joined
- Jun 27, 2020
- Location
- Shetland
Hello all.
I have a split phase / Bi Phase, single phase 3 wire (USA style system), 2 phases coming into the workshop from a center tapped transformer. 240v phase to neutral and 480 phase to phase.
I have been looking at 3 phase welders and specifically the inverter ones, for instance miller in the USA do welders which can run on 230, 460, 570v single phase with the 460v being the same system i have installed.
I now need to get a large Mig welder to complete my workshop, most of them as soon as you go over 250A they have to be 3 phase.
My question is relating to the inverter type welders on the market, i am not sure if what i am going to ask is even remotely possible but with my minimal knowledge on these welders and what i can find on the internet it seems like it may be possible.
My question is as follows, can i take the 2 legs i have with 480v between them, say put them in L1 and L2 of the welder and then put a series of links in between L1, L2 and L3 to in effect make the machine think i am powering it from 3 phase. i.e it will see power across all phases. the only thing with this is the phases wouldn't be balanced 120 degrees apart but i am not sure the machine would be this "clever" and would more be looking for a voltage across each leg.
In my simple understanding of the way these inverters work they take in a "3 phase" supply and convert it to DC and output it through a second inverter in the machine.
Any help on this would be greatly appreciated. It is a big outlay to buy a 3 phase welder of this size and not much point doing it if this wont work. My other possible options are a Rotary converter, or a Drives Direct digital one.
Thanks in advance
Robert
I have a split phase / Bi Phase, single phase 3 wire (USA style system), 2 phases coming into the workshop from a center tapped transformer. 240v phase to neutral and 480 phase to phase.
I have been looking at 3 phase welders and specifically the inverter ones, for instance miller in the USA do welders which can run on 230, 460, 570v single phase with the 460v being the same system i have installed.
I now need to get a large Mig welder to complete my workshop, most of them as soon as you go over 250A they have to be 3 phase.
My question is relating to the inverter type welders on the market, i am not sure if what i am going to ask is even remotely possible but with my minimal knowledge on these welders and what i can find on the internet it seems like it may be possible.
My question is as follows, can i take the 2 legs i have with 480v between them, say put them in L1 and L2 of the welder and then put a series of links in between L1, L2 and L3 to in effect make the machine think i am powering it from 3 phase. i.e it will see power across all phases. the only thing with this is the phases wouldn't be balanced 120 degrees apart but i am not sure the machine would be this "clever" and would more be looking for a voltage across each leg.
In my simple understanding of the way these inverters work they take in a "3 phase" supply and convert it to DC and output it through a second inverter in the machine.
Any help on this would be greatly appreciated. It is a big outlay to buy a 3 phase welder of this size and not much point doing it if this wont work. My other possible options are a Rotary converter, or a Drives Direct digital one.
Thanks in advance
Robert