... , stable and contensive plasma arc output, IGBT inverter technology, plasma cutting machine Features of Inverer Air plasma cutting machine LG120:1. IGBT ... grid, high ability of interference resistance, stable cutting current and steady arc, automatic voltage compensation;3 ... of Inverer Air plasma cutting machine LG120: ModelSpec.LG120Power supply voltageAC 380±10%V / 50~60 Hz Power supply capacity20 ...