| Model # | DN-250 | DN-300 | DN-500 | |
| Rated Capacity | KVA | 250 | 300 | 500 | 
| Power Supply | V/Φ/Hz | 380/1PH/50HZ | ||
| Max. Primary Current | A | 465 | 560 | 930 | 
| Primary Cable | MM2 | 150 | 185 | 240 | 
| Max. Short Circuit Current | KA | 42 | 46 | 76 | 
| Rated Duty Cycle | % | 50 | 50 | 50 | 
| Secondary Empty Voltage | V | 13/11 | 16.0/12.0 | 18.0/14.0 | 
| Welding Cylinder Size | Φ*L | Φ200*100 | Φ200*100 | Φ250*150 | 
| Max. Working Pressure | N | 15000 | 15000 | 24000 | 
| Compressed Air Pressure | MPa | 0.6~0.7 | 0.6~0.7 | 0.6~0.7 | 
| Cooling Water Consumption | L/MIN | 14 | 14 | 14 | 
| Compressed Air Consumption | L/time | 9.24 | 9.24 | 14.43 | 
| Throat Depth | MM | 528 | * | * | 
| Arm Gap | MM | 425 | * | * | 
| Electrode Size | MM | Φ30 | * | * | 
| Dimensions | H(MM) | 1803 | * | * | 
| L(MM) | 1269 | * | * | |
| W(MM) | 560 | * | * | |