... time 15-30 days. Model Number: NBC-270A Input voltage(A): 3-380 Frequency(Hz): 50/60 Input rated capacity( ... Voltage regulation(class): 3/10 Curent adjusting scope(A): 40-210 Rated welding current(A): 210Welding DC argon welding. Use widely used in ... copper, copper alloy, low carbon steel. Inverter technology it has a convenient adjustment, small size, light weight, convenient maoving. Control system ...