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Package includes; Terra NX 320 PME power source, MS Terra NX master software, WF NX Steel Drive wire feeder, WU 230 cooling unit, trolley, air-cooled MIG torch, and water-cooled MIG torch.
Straight answers to the questions people ask most when choosing a three-phase MIG welder for workshop and production use.
Three-phase machines suit fabrication shops, production lines, engineering workshops and anyone welding thicker material or for long periods. A three-phase supply carries more power for a given current per phase, so these machines can give higher output with a steadier load on the supply.If you only have a single-phase supply, you are limited to single-phase machines.
In practice, very little. Older documents and some machine labels refer to 415v, while the current nominal figure for a UK three-phase supply is usually given as 400v. Machines are normally designed to work within a tolerance either side of their rated input, but the allowed range depends on the maker and the model.Check the data plate and the manual for the supply the machine accepts, compare that with the measured supply at your site, and ask a qualified electrician if you are unsure.
Air-cooled torches are simpler and need no extra equipment, and suit many general jobs. Water-cooled torches carry higher current for longer without overheating, so they suit heavy, continuous or production welding, but they need a cooler and a little more upkeep.Choose according to the current and the duty cycle you will use.
A compact machine has the wire feeder built into the power source and is simpler and easier to move. A separate (split) system has an independent wire feeder connected by an interconnecting cable, which you can carry to the work, away from the power source.Separate feeders suit large fabrications and reaching big workpieces, and compact units suit general workshop use.