Model:TIG200AC/DC ACDC TIG MACHINE Input power voltage Frequency:220+-15%.V50/60Hz Rate Input power capacity: 4.5KVA Output current range: 20-200 Rated output voltage: 18V No-load Voltage:56V Duty cycle:60% Arc-sarting:HF Efficiency: 85% Power factor: 0.93 Insulation class:B Weight:20.5 Overall dimension:500X330X360mm Protection class of case:IP21 Pre-flow:0-2s Clean width:20-80% Dlown-slope time:0-5s Post flow time:2-10 Max welding thickness with AC