Multiple Station Welding Systems

The Multi–Weld multiple station welding system offers a new way to organize welding on large scale structures such as petroleum storage tanks, offshore platforms, ships etc.

The Multi–Weld system uses a high quality patented technology developed by the Lincoln Electric Company and known as Chopper Technology. Chopper Technology provides a high–frequency control of the weld current, and offers the following advantages:

  • absolute independence of one weld arc from another;
  • easy to strike weld arc;
  • soft arc;
  • improved heat containment;
  • improved transfer of metal in the weld puddle;
  • reduced spatter;
  • excellent bead appearance;
  • energy conservation.

off–shore Multi–Weld application


Multiple Station Welding Systems-1

Multi–Weld multiple station
welding system:

  1. primary welding current power source; 
  2. adaptor;
  3. Multi–Weld 350 station;
  4. Multi–Weld 350 stations in parallel;
  5. wire feeder;
  6. welding wire;
  7. stick electrode;
  8. arc gouge.


example of Multi–Weld System configuration

Each Multi–Weld 350 station is a light, portable independently controlled satellite CC/CV source of welding power with DC+ polarity at 350A given 100% duty cycle.

When required, two welding stations can be linked in parallel for up to 700A
(at 100% effective weld time).

The Multi–Source, acting as the primary welding current power source, distributes welding current through a special adapter to individual compact welding stations.
A single Multi–Source can power up to ten to fifteen such stations.

Additionally, the DC series of rectifiers (DC–655, DC–1000, DC–1500),
or the diesel powered Commander 500, may serve as a primary power source
for such a network.

The number of stations is determined by the output power of the primary source, and on the case of the DC–1500, can go up to 50 units.

pictured with Multi–Weld 350


If a customer already has an R3R–series welding rectifier, intended for use with stick electrodes, it may likewise be employed
as a power source for the Multi–Weld system, supporting from four
to five stations. Now the R3R series units can be used for
semi–automatic welding as well!

One of the Multi–Weld’s distinguishing characteristics is its ability to maintain constant welding parameters despite individual welding systems being switched on or off. In other words, interference among welding stations has been completely eliminated.

construction site Multi–Weld application

Moreover, the problem of supplying each welder with high voltage has been solved. The primary power source distributes a low voltage welding current, improving safety at the job site and eliminating
the need for more expensive high voltage cables and multiple electric generators.

It also allows for central stabilization of electrical current.

Multi–Weld system powered
by diesel driven Commander 500