Characteristic: 1. AC/DC TIG welder. 2. Three protection circuit welding equipment. 3. Portable design welding machinery/pulse welding machine 4. suit for aluminium and alloy, carbon steel, stainless steel, copper and titanium those kinds of color metal. Specification: 1. Input power voltage(V):3-380V±15% 50/60HZ 2.Rated input power capacity(KVA): 6.3 3.No load voltage(V): 45 4.Output current adjustment(A): 5-250 5.Rated working voltage(V): 20 6.Rated duty cycle(%): 60 7.Gas pre-flow time(S): 0-2 8. Down-slope time(S): 0-5 9.Gas post-flow time(S): 2-10 10. Arcing way: high frenquency 11. Efficiency(%): 85 12. Power factor: 0.93 13. Rank of insulation: F 14. Rank of protection: IP21 15. Weight(Kg): 38 16. Dimensions(mm): 580×334×480 17. Max. welding thickness(mm): 5