<p data-start="91" data-end="499">The HELVI UNISTAR 528 is a powerful, three-phase MIG/MAG welding machine designed for demanding industrial applications. Equipped with advanced thyristor voltage control and a separate 4-roll wire feed unit, it ensures exceptional welding performance with precise arc control. This unit is perfect for heavy-duty fabrication, manufacturing, and large-scale welding projects.</p>
<br>Key Features:
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<br><li data-start="526" data-end="638">Thyristor Voltage Control – Provides stable and precise voltage regulation for optimal weld quality.</li>
<br><li data-start="639" data-end="756">4-Roll Separate Wire Feed Unit – Ensures consistent and smooth wire feeding for reliable welding results.</li>
<br><li data-start="757" data-end="914">Complete Welding Accessories – Includes a 5m interconnecting cable, Euro/Binzel connection, pressure regulator, gas hose, earth cable, and clamp.</li>
<br><li data-start="915" data-end="1018">Welding Current & Arc Voltage Display – Enables real-time monitoring for precision welding.</li>
<br><li data-start="1019" data-end="1126">Versatile Wire Spool Compatibility – Accepts 5 to 15 kg spools for extended welding operations.</li>
<br><li data-start="1127" data-end="1235">Cooling System Options – Available with air or water cooling (R.A. = water-cooled optional).</li>
<br><li data-start="1236" data-end="1339">Heavy-Duty Design on Wheels – Built for mobility and durability in industrial environments.</li>
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<br>Technical Specifications:
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<br><li data-start="1378" data-end="1421">Input Voltage: 3Ph/230-400V/50-60Hz</li>
<br><li data-start="1422" data-end="1461">Power at 60% Duty Cycle: 25 KVA</li>
<br><li data-start="1462" data-end="1503">No-Load Output Voltage: 16 ÷ 48 V</li>
<br><li data-start="1504" data-end="1537">Current Range: 70 ÷ 500 A</li>
<br><li data-start="1538" data-end="1592">Duty Cycle:
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<br><li data-start="1560" data-end="1574">500A @ 60%</li>
<br><li data-start="1577" data-end="1592">400A @ 100%</li>
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<br><li data-start="1593" data-end="1725">Compatible Welding Wires:
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<br><li data-start="1629&a
