Dual-operator welding generator features two CST 280 SMAW/GRAW inverters

Miller Electric Mfg. Co. has introduced the new Big Blue® 450 Duo CST, a dual-operator diesel engine-driven welding generator that features two CST 280 SMAW/GTAW inverters and 12,000 W of continuous three-phase power in a single unit.

Powered by Mitsubishi's S4L2 4-cylinder diesel engine, the generator allows two welders to work off the same machine with two separate welding outputs. According to the company, the machine offers superior performance on difficult stick electrodes found in structural steel and fabrication applications, such as E6010, as well as GTAW for pipe fabrication and maintenance applications.

The Tier 4i-compliant machine operates at 1,800 RPM to help reduce fuel use and keep noise levels up to 10 dBa.

Users can tailor SMAW output by selecting the type of electrode and a stiff or soft setting. The system also features Adaptive Hot Start™ for SMAW, which increases the output amperage at the start of a weld to help prevent the electrode from sticking and creating an inclusion. Lift-Arc™ technology helps improve GTAW arc starts without the use of high frequency.