supply of portable single operated rectifier type conventional dc arc welding set-600 ampere capacity suitable for manual arc welding process with warranty/guarantee and test certificate. technical specification as given below: 1. maximum hand welding current @ 60% duty cycle ; 600a and minimum hand welding current @60% duty cycle: 120 a 2. open circuit voltage : 70v (max) and operating arc voltage: 25-44 volt. 3. 3-phase 50 hz, rated input voltage: 3 tapings- 380/415/440 volts. 4. type of cooling : forced air cooled -heavy duty exhaust fan with copper windings, metal body and fan blades. 5. class of insulation and winding materials : class h insulation with both primary and secondary copper windings. 6. specification to which it conform : is 4559- latest version. 7. type of rectifier- silicon diode. full wave 3-phase bridge rectifier: type with current regulator, safety norms: earth fault facility & vrd facility. make:- essab, berco, micro welds india or similar.portable single operated rectifier type conventional dc arc welding set-600 ampere capacity suitable for manual arc welding process with warranty/guarantee and test certificate. technical specification as given below: 1. maximum hand welding current @ 60% duty cycle ; 600a and minimum hand welding current @60% duty cycle: 120 a 2. open circuit voltage : 70v (max) and operating arc voltage: 25-44 volt. 3. 3-phase 50 hz, rated input voltage: 3 tapings- 380/415/440 volts. 4. type of cooling : forced air cooled -heavy duty exhaust fan with copper windings, metal body and fan blades. 5. class of insulation and winding materials : class h insulation with both primary and secondary copper windings. 6. specification to which it conform : is 4559- latest version. 7. type of rectifier- silicon diode. full wave 3-phase bridge rectifier: type with current regulator, safety norms: earth fault facility & vrd facility. make:- essab, berco, micro welds india or similar.,portable single operated rectifier type conventional