K4726-1 - Lincoln Flextec 350X 4-Pack Rack Multi-Process Welder

Technical Overview of the Lincoln Electric Flextec 350X PowerConnect 4-Pack Rack

The Lincoln Electric Flextec 350X PowerConnect 4-Pack Rack (SKU: K4726-1) represents a pinnacle in industrial multi-operator welding solutions. Designed to address the rigorous demands of heavy fabrication, shipbuilding, and construction environments, this system integrates four individual Flextec 350X PowerConnect inverters into a singular, ruggedized rack assembly. The core advantage of this configuration lies in its power distribution architecture; the entire rack requires only a single primary power drop (3-phase), which internally distributes power to all four welding units. This significantly reduces the electrical infrastructure required on-site, minimizing the number of high-voltage cables trailing across the floor and simplifying electrical hookups.

Technologically, the Flextec 350X units are equipped with Lincoln Electric's proprietary PowerConnect technology. This feature allows the machines to automatically sense and adjust to any input voltage between 200V and 575V, 50 or 60 Hz, without the need for manual relinking or internal adjustments. This flexibility is critical in industrial settings where input power can fluctuate or vary between different areas of a job site. Furthermore, the units feature CrossLinc Technology, a communication protocol that transmits voltage and amperage control signals over the standard copper welding leads. This eliminates the need for fragile and expensive control cables, increasing reliability and reducing clutter.

The physical construction of the rack is engineered for durability and mobility. It features a heavy-duty square tube frame with an IP23 rating, ensuring protection against solid objects greater than 12mm and spraying water, making it suitable for outdoor use. The assembly includes integrated forklift pockets and lifting eyes, facilitating rapid deployment via crane or forklift. Each inverter within the rack provides a rated output of 350A at 60% duty cycle, with a maximum output of 425A, supporting a wide range of processes including Stick, DC TIG, MIG, and Flux-Cored welding. The system's inverter-based topology also ensures high energy efficiency compared to traditional transformer-rectifier designs.