May 25, 2013 – ESAB Welding & Cutting Products introduced a new family of Heliarc machines for AC/DC GTAW (TIG) and SMAW (Stick) welding. Three Heliarc TIG welding machine models are offered: the 281i, a 280A unit for single-phase 230 connections; the 283i, a 280A unit for 3-phase 460A; and 353i, a 350A 3-phase 460A for more power when welding thicker materials. All three use inverter technology, which promises increased energy efficiency. The Heliarc family promises good AC and DC SMAW (Stick) performance, including cellulosic (E-XX10, E-XX11) electrodes. Heliarc offers easy-to-control arc heat input, which results in high quality welds. Pulse current allows for lower heat dissipation, better control of the weld pool and less plate deformation. In AC mode, the arc is designed to only use high frequency at the start, reducing electrical noise and the risk of interference with surrounding electronics. High frequency can be switched completely Off in favour of an electronic live TIG start when welding in areas where high frequency is not permitted.