Big Blue 450 Duo CST Diesel Engine-Driven Welder

Big Blue 450 Duo CST, a dual-operator diesel engine-driven welding generator that features 2 CST 280 Stick/TIG inverters and 12,000 W of continuous 3-phase power in a single unit, is powered by a Mitsubishi S4L2 4-cylinder diesel engine. The unit provides increased productivity by allowing 2 welders to work off the same machine with 2 separate welding outputs. The machine offers superior performance on difficult Stick electrodes found in structural steel and fabrication applications, such as E6010, and excellent TIG performance for pipe fabrication and maintenance applications.

This Tier 4i-compliant machine operates at a low 1,800 rpm, reducing fuel use and keeping noise levels low. It features an easy process selector for Stick and TIG applications. Stick welders can further tailor welding output by selecting the type of electrode and whether to weld in a stiff setting (more dig/arc force) or a soft setting (lower dig/arc force). The system also features Adaptive Hot Start for Stick welding applications. This technology increases the output amperage at the start of a weld to help prevent the electrode from sticking and creating an inclusion. Lift-Arc technology improves TIG arc starts without the use of high frequency.

In addition to the dual operator weld outputs, the machine features a high-efficiency, 3-phase rotating-field generator that requires less fuel and horsepower to operate. Built-in thermal overload protection prevents machine damage if the duty cycle is exceeded or if airflow is blocked. The engine is designed to run more than 10,000 hours before its first major overhaul, and the machine offers an easy-to-understand meter maintenance display that reports hours, oil change intervals, high coolant temperature and low oil shutdowns, and a low fuel shutdown that shuts down the system before it runs out of fuel, making restarts easy.