0469844882 - ESAB LAF 800 DC Submerged Arc Welding Power Source

Heavy-Duty DC Power for Automated Welding

The ESAB LAF 800 is a three-phase, fan-cooled DC welding power source engineered specifically for high-efficiency automated welding applications. Designed to meet the rigorous demands of heavy industry, this unit excels in Submerged Arc Welding (SAW) as well as high-productivity MIG/MAG arc welding. Its robust transformer design ensures exceptional reliability and longevity, making it a staple in sectors such as wind tower manufacturing, shipbuilding, pipe mills, and general heavy fabrication.

One of the defining characteristics of the LAF 800 is its excellent arc stability across the entire output range. Whether operating at low currents for thin-walled applications or high currents for deep penetration passes, the machine delivers a smooth, consistent arc. This is critical for automated processes where precision and repeatability are paramount. The unit is designed to integrate seamlessly with ESAB’s renowned A2 and A6 automated welding equipment, typically controlled via the PEK or PEI process controllers, allowing for sophisticated management of welding parameters.

The power source features built-in voltage compensation, which actively stabilizes the welding voltage against mains supply fluctuations. This ensures that the preset welding parameters remain constant, resulting in uniform weld bead profiles and reduced defect rates. Furthermore, the LAF 800 is capable of remote control operation, enabling operators to adjust voltage and current settings on the fly from the welding tractor or a separate control panel, enhancing operational flexibility.

With a rated output of 800 Amps at 100% duty cycle, the LAF 800 is a true workhorse designed for continuous operation without thermal throttling. It includes comprehensive thermal overload protection to safeguard internal components. The unit is housed in a durable casing with an IP23 protection rating, making it suitable for harsh industrial environments. Connection to the mains is versatile, supporting multiple voltage inputs (e.g., 400V, 415V, 500V), ensuring compatibility with various industrial power grids globally.