AC inverters provide better control compared to standard AC welders
AMADA WELD TECH Inc., a leading manufacturer of resistance welding, laser welding, marking, cutting, and micromachining equipment and systems, highlights its MIB-300A and MIB-600A AC Inverter Welding Power Supplies which offer increased control resulting in more exact heat input and better quality welds as compared to traditional AC weld controls.
The AC inverter uses inverter technology with pulse width modulation (PWM) to produce and simulate an AC waveform. Unlike AC welders that use line frequency and depend on well-regulated facility power, the AC inverter can produce an AC frequency from 50 Hz to 500 Hz allowing more precise energy delivery in less time, is not affected by line voltage fluctuation, and provides a balanced three phase load.
The MIB-300A and MIB-600A feature secondary constant current control, up to 20 pulses per weld and the ability to set upslope, downslope and weld interrupt. Up and downslope improve energy input into the welded material and interrupt stops the flow of current if displacement breaches a set level, preventing over welding.
MIB-300A and MIB-600A may be used with the same transformers and weld heads as standard AC welders. With max output currents of 20,000 and 40,000 A respectively, the units may be used for a variety of different welding applications. Common uses for AC inverters include sheet metal welding, wire compacting, and brazing.
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