Control and regulation of all the steps of the spot welding process Microprocessor controlled, three-phases, inverter (MFDC 2000 Hz) resistance welding. Automatic control of the spot welding current (12.000 A) continuous and pulse operation High efficiency and productivity improved in comparison with the traditional resistance welding systems Over 200 pre-set programs according to the kind and thickness of the material used and to the kind of clamp chosen. High quality and aesthetic of the spot on all kinds of high resistance steels,HSS,AHSS, galvanized steels and stainless steelsNULL Standard equipment: water cooled clamp and air cooled cables, built-in water cooling system, arm and balancer to hold the clamp Control Panel: Use a large 5x7 monitor to display images and clip art and software is stored on an upgradeable CPU by internet. Model:SHELLMAX-12-3 Input voltage(50/60Hz): 400V/3PH or 208-240V/3PH Max absorbed power( KW): 73 Rated power x=50%( KW): 25 Max welding current: 12000A(3Ph) Max short circuit current: 13000A(3Ph) Power factor( cosphi): 0.8 Secondary no load voltage(V): 4-21 Duty cycle: 5% Inverter frequency( HZ): 2000 Cooling system: Air(2 fans), compressor air for weld cables; Water cooling for clamp. Welding cable length: 7.2(2.2m) stand Max electrodes force, 8bar(daN): X-clamp 345, C-clamp 350(600Lb) Max weld thick on sheets( mm): 4+4 or 2+2+2 Insulation class: H Protection degree: IP22 Input voltage can be custom made.