907731 - Miller XMT 350 FieldPro Polarity Reversing Multi-Process Welder (Tweco)

Advanced Field Welding Solution with Polarity Reversing

The Miller XMT 350 FieldPro with Polarity Reversing (Tweco) is engineered to address the specific inefficiencies found in large-scale industrial projects, such as shipbuilding, pipeline construction, and structural fabrication. This 350-amp multi-process power source integrates Miller's cutting-edge ArcReach technology with internal polarity reversing circuitry. This combination eliminates the non-value-added time operators typically spend walking back to the power source to switch weld cables when changing processes. By allowing process selection and parameter adjustments directly at the weld joint via compatible ArcReach feeders and remotes, this system significantly enhances arc-on time and overall project throughput.

Technical Superiority and Control

Beyond basic power delivery, the XMT 350 FieldPro offers sophisticated control features designed for quality assurance. Cable Length Compensation (CLC) automatically adjusts the output voltage to account for the voltage drop across long weld cables, ensuring that the voltage set by the operator is exactly what is delivered to the arc. Furthermore, Auto-Process Select reduces the risk of weld defects by automatically configuring the power source to the correct process based on the polarity detected at the accessory. The unit supports a comprehensive range of processes including MIG (GMAW), Pulsed MIG, RMD, Stick (SMAW), DC TIG (GTAW), and Air Carbon Arc Gouging, making it a versatile asset for diverse metallurgical requirements.

Robust Infrastructure Compatibility

Designed for global deployment, the XMT 350 FieldPro features Auto-Line technology, which allows for seamless connection to any primary input voltage ranging from 208 to 575 volts, single- or three-phase, without manual linking. This flexibility simplifies fleet management and logistics. The unit is housed in a lightweight, aerospace-grade aluminum case and utilizes Wind Tunnel Technology to isolate internal electrical components from cooling airflow, thereby protecting sensitive electronics from the ingress of dirt, dust, and debris common in field environments. This specific model (907731) is equipped with Tweco-style receptacles, ensuring compatibility with existing heavy-duty cable fleets.