The EWM Wega 330A Synergia is a transformer MIG/MAG power source with a copper winding and microprocessor control. You set the current from 30 to 330 A, at a 45% duty cycle the machine holds 330 A, and in continuous work 220 A. You pick the voltage in steps, the wire feed steplessly, and the torch is cooled by liquid from a module built into the set.
What this machine is for
This is the old school joined with one modern addition. The power block is a transformer one, with the winding wound wholly in copper, and not in cheaper aluminium. Copper carries current and heat better, so the source does not heat up too much under load and holds stable output parameters through the whole shift. You change the voltage with a tap switch, that is mechanically, without electronics, which in a dusty shop can fail. Above that sits a microprocessor controller with synergic programs. Such a mix makes sense where a plant wants the simplicity and the toughness of an old construction, but does not want to give up fast setting of parameters when the part changes.
Synergy works simply here: you set the voltage and pick a program assigned to the material, and the machine picks the wire feed speed itself. That shortens the changeover and takes the most common mistakes of the first setup off the operator. In a mixed trade workshop, where the type of welded material changes during the day, this function really saves time. The condition is that you keep to the wire diameters the factory programs provide for, because outside them the choice of feed stops matching. Aluminium is in the program base too, but it needs the torch converted to a teflon liner and rolls with a U profile, otherwise the soft filler jams in the guide.
The range from 30 to 330 A covers the typical range of a structural workshop: from thinner sections to thick steel plate, where deep penetration is needed. The maker pointed this model to the machine industry, steel structures, repair workshops and production of semi trailers, and the applications listed are large structures in carbon steel, load bearing frames of semi trailers, panel work on thick industrial sections, guards of farm machines, series production of road infrastructure parts and services in maintenance. In each of these places the same thing counts: the machine has to work every day, take dirt and need no service of electronics, and synergy is only to shorten the setting of parameters, not to replace the operator.
Features and equipment
- Transformer power block with a copper winding: copper carries current and heat better than cheaper aluminium substitutes, so the source does not overheat under load, and the output parameters stay stable through the whole shift.
- Current range from 30 to 330 A with a 45% duty cycle at 330 A and 100% at 220 A: the thermal reserve lets you fuse deep into thick plate, and the lower range holds a stable arc on thin material.
- Stepped voltage adjustment with a tap switch: the position you pick binds the voltage mechanically, so it will not go out of tune by accident during the work or as the core heats up, and the arc length stays the same through a whole production run.
- Settings resistant to dust: a mechanical switch works where electronic potentiometers fail fast.
- Stepless adjustment of the wire feed with a potentiometer: you match the amount of filler fed steplessly to the voltage step you pick, which cuts spatter and gives a flat, smooth face, and on material of changing thickness it lets you correct the process fast.
- Synergic programs for different metals: once you point to the material and set the voltage the controller picks the wire feed speed itself, which shortens the changeover and takes the most common errors of the first setup off the operator.
- Integrated liquid cooling module: the pump forces coolant round a closed circuit and takes heat off the gas nozzle and the contact tip, so the consumable parts of the torch last longer when you weld at a high current.
- Cooler fed from the main block: the pump starts together with the machine, without a separate switch and without the risk that somebody forgets to start it.
- Handling of aluminium alloys through the synergic programs: it needs the torch converted to a teflon liner and rolls with a U profile, but it does not need another machine.
- Work in mechanised production lines: a construction meant for a constant load, not for occasional use.
- Simple service: without microprocessor power modules a repair comes down to changing components that you can get also years later.
Technical data
| Brand | EWM |
|---|---|
| Type | transformer MIG/MAG welder with synergy |
| Welding current range | from 30 to 330 A |
| Duty cycle 45% | 330 A |
| Duty cycle 100% | 220 A |
| Supply voltage | 400 V |
| Voltage adjustment | stepped |
| Wire feed adjustment | stepless |
| Weight of the unit | 250 kg |
| Torch cooling | liquid |
What to watch out for
The supply is 400 V, and the weight of 250 kg means unloading and moving with a fork lift, not by two people. Work at the maximum parameters needs a torch that will take it and a supply mains without swings, otherwise you will not use the current reserve. At 330 A the duty cycle is 45%, for work without breaks 220 A is left and you plan the output of the bay to that figure.
Liquid cooling needs the fluid level checked, the fluid changed from time to time and a torch made for water, and an air locked circuit ends with a damaged torch. The voltage adjustment is stepped: synergy picks the feed, but it will not change the voltage while the arc burns, so between the steps you correct the way you lead the torch. The rolls and the liner are matched to the diameter and the type of wire, and for aluminium you need a teflon liner and rolls with a U profile. Badly set roll pressure ends with the wire slipping at higher feed speeds, so after a change of diameter it pays to check it on a test run.
This unit is sold
This machine has already gone to a customer. Similar units are listed below, and if you want the same model, leave your contact details in the form and we will let you know when the next one arrives.