This model with AVR of precise double characteristics makes the welding current adjusting range large, it can meets various welding technological requirement, and supplies smooth and steady welding current. This model with the features of less sparks, smooth welding seam, easy to use and running reliable etc. Besides, this machine can supply alternating current (220V, 3kW) to power other electric tools Engine: max. output: 8.5 /3000 cooling method: Forced-air. Starting method electric Weld: no-load voltage: 50-80vwelding Current range: 45-210A Generator: single phase rated output: 3kva rated frequency: 50Hz rated voltage: 220V