The MIB-300A/600A are AC inverter welding power supplies with up to 300 A or 600 A primary current. Compared to standard AC welding power supplies, AC inverters provide more controlled input of heat to the workpiece, minimizing potential damage to surrounding parts. AC inverters also helps avert magnetization of the workpieces or of magnetic parts and prevent uneven welds due to the Peltier effect when welding dissimilar materials. • More effective control of heat input than standard AC welding power supplies WELD COMPARISON: AC weld vs AC Inverter weld • Reduced Peltier effect during weld and reduced magnetization of work piece and magnetic materials around electrodes • Secondary constant current control • Increased maximum number of pulsations: up to 20 times each for WELD 1, 2, 3 AC weld – Coating burned around weld location • Set interrupt, upslope and downslope for all waveforms (Weld 1, 2, 3) – Interrupt function helps prevent over welding of workpiece; upslope and downslope improve energy input into workpiece AC Inverter weld – reduced/no burning of coating

TECHNICAL SPECIFICATIONS Model Power requirements 3 -phase 200 to 240 VAC ±10% (50/60 Hz) or 3-phase 380 to 480 VAC ± 10% (50/60 Hz) ( Voltage level is factory-set and is not field selectable.) Maximum output current Number of schedules Output frequency Control method SQUEEZE Timer setting range 255 50, 53, 56, 59, 63, 67, 71, 77, 83, 91, 100, 111, 125, 143, 167, 200, 250, 294, 417, 500 Hz (Initial setting is 63 Hz.) Frequencies in bold are available only when FREQ MODE (START) is set to PWM-OFF. Primary constant-current peak value control / Secondary constant-current peak value control / Secondary...