The LOKERMANN GRAND MIG 502 SYN is a three-phase multi-process inverter welding power source for MIG, Synergic MIG, TIG DC Lift and electrode welding. With LCD control, waveform correction, adjustable Arc Force, anti-sticking protection and 500 A at 60% duty cycle, it is designed for high-productivity medium and heavy carpentry applications.

The GRAND MIG 502 SYN from LOKERMANN is a three-phase multi-process inverter welding power source for MIG, Synergic MIG, TIG DC Lift and MMA electrode welding. Designed for medium and heavy carpentry, it delivers high productivity, robust performance and simplified welding setup for demanding industrial fabrication.
Overview
The GRAND MIG 502 SYN is built for professional welding environments where power, versatility and reliable arc performance are essential. Its large colour LCD display allows intuitive and fast machine setting, helping operators achieve high welding quality with reduced setup time. The Synergic MIG function assists the welder in selecting the correct parameters by adjusting one knob, reducing machine setting time and lowering the risk of defects caused by incorrect parameters.
The machine supports MIG, Synergic MIG, TIG DC Lift and electrode welding. Waveform correction improves arc stability, even at low currents, while adjustable Arc Force and anti-sticking protection improve electrode welding control. With a 500 A at 60% duty cycle, cooling-unit connection capability and multi-process operation, the GRAND MIG 502 SYN is designed for productive medium-heavy carpentry applications.
Recommended accessories
Synergic MIG control
The Synergic MIG function helps the operator find suitable welding parameters quickly by adjusting one knob. This reduces setup time and helps minimise welding defects caused by incorrect parameter selection.
Multi-process flexibility
The GRAND MIG 502 SYN supports MIG, Synergic MIG, TIG DC Lift and electrode welding, making it suitable for workshops that need one high-power machine for multiple welding processes.
Improved arc stability
Waveform correction increases arc stability, especially at low currents, supporting smoother welding behaviour and better process control.
Electrode welding support
Adjustable Arc Force allows easier electrode welding operation, while anti-sticking protection interrupts welding current when the electrode remains stuck to the workpiece.
High productivity
With 500 A at 60% duty cycle and cooling unit compatibility, the machine is designed for demanding production environments requiring sustained welding output.
The GRAND MIG 502 SYN is suitable for:
The GRAND MIG 502 SYN is a strong choice for professional fabrication environments that require high welding power, multi-process flexibility and simplified setup. Its synergic control, LCD interface, waveform correction and 500 A duty-cycle capability make it suitable for demanding medium-heavy carpentry applications where productivity and weld quality are critical.
| Code | 13011 |
| Input voltage | 400 V |
| Input frequency | 50/60 Hz |
| Input phase | 3 |
| Rated input power* | 25.5kW / 20.9kW / 26.7kW |
| Rated input current (I1MAX)* | 36.8A / 30.2A / 38.6A |
| Effective input current (I1EFF)* | 28.5A / 23.4A / 29.9A |
| Duty cycle 60% (10 min 40°C)* | 500A |
| Duty cycle 100% (10 min 40°C)* | 390A |
| No load voltage | 96.5 V |
| Current range | 30A/500A (MIG) |
| Net weight | 33.5kg |
| Dimensions | 660x300x470mm |
| Protection class | IP23 |
| Power factor | 0.8 |
| Rolls type | 1.0-1.2 V |
| Wire spool Ø | 300 |
| Efficiency | 89.50% |
| Maximum stand-by consumption | 20W |
Grand MIG 502 SYN
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