
The Miller Dynasty 300 TIGRunner (907818002) represents the pinnacle of precision welding technology, combining the advanced Dynasty 300 power source with a fully integrated water-cooling mobility solution. Designed for industrial applications requiring exacting standards, this package includes the Coolmate 1.3 water cooler and the Small Runner cart, providing a self-contained station for high-amperage TIG welding. The machine delivers a robust 300 amps of output, capable of welding materials up to 3/8-inch thick, making it an ideal successor to the legacy Dynasty 280 series.
At the core of the Dynasty 300 is Miller's proprietary Auto-Line technology. This inverter-based power management system allows the machine to hook up to any single-phase or three-phase input voltage ranging from 208V to 600V without manual linking. This ensures reliable performance even on dirty or unreliable power grids often found on job sites. The unit features a modern, intuitive 4.5-inch LCD interface that simplifies setup. Operators can utilize the Pro-Set feature, which eliminates guesswork by offering professional-grade presets for Balance, Frequency, Pulse, and DIG parameters, ensuring optimal arc characteristics with minimal setup time.
Advanced waveform control is a hallmark of the Dynasty series. The 300 offers four distinct AC waveforms (Square, Sine, Triangular, and Advanced Square) and wide-ranging frequency adjustments (20-400 Hz) to tailor the arc cone and heat input specifically for the application, whether it is thin aluminum or heavy steel. The QuietPulse technology significantly reduces the audible noise associated with DC pulse welding, creating a more comfortable working environment. Additionally, the Cooler-On-Demand feature integrates seamlessly with the Coolmate 1.3, activating the cooling system only when the arc is active or the torch is hot, thereby reducing airborne contaminants and energy consumption.
This TIGRunner package is built for durability and ease of maintenance. The front panel USB port facilitates software updates and the transfer of weld programs between units, while the Locks and Limits feature allows shop managers to maintain strict adherence to Welding Procedure Specifications (WPS). With an IP23 rating, the equipment is designed to withstand harsh industrial environments.
| Additional Information |
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| Brand:Miller |
| Amperage:300 |
| Voltage:200-600 V |
| Weld Process:TIG (GTAW) |
| Machine Cart:Tig Runner |
| Packaging Description:1 Per Ea |
| Process Type:AC/DC TIG (GTAW), Pulsed TIG (GTAW-P), Stick (SMAW), Air Carbon Arc (CAC-A) |
| Input Voltage:208-600 V |
| Input Phase:1-Phase, 3-Phase |
| Amperage Range:1 - 300 A |
| Cooling Type:Water Cooled |
| Portability:Cart Mounted |
| Material Thickness:Aluminum 0.012 in (0.3 mm) - 3/8 in (9.5 mm), Steel 0.004 in (0.1 mm) - 3/8 in (9.5 mm) |
| Warranty:3 Years |
| Included Accessories:Coolmate 1.3, Small Runner Cart, Adjustable Shoulder Strap, 8 ft Primary Cord |
| Max Open Circuit Voltage:60 VDC |