| Version | Tetrix 551 AC/DC Synergic FW |
| Setting range for welding current | 5 A – 550 A |
| Duty cycle 40 °C | 550 A / 60 % |
| / | |
| 420 A / 100 % | |
| Open circuit voltage | 80 V |
| 79 V | |
| Mains voltage | 3 x 400 V |
| Tolerances | -25 % up to +20 % |
| Mains frequency | 50 Hz / 60 Hz |
| Recommended generator power | 30.5 kVA |
| Torch connection | Dezentral |
| Weight | 181.5 kg |
Tetrix 551 AC/DC Synergic FW
- AC/DC TIG welding machine, mobile, water-cooled, decentral
- TIG welding torch, water-cooled, 4 m
- Coolant (-20 °C), 9.3 l,
- Antifreeze for the EWM welding systems -10 °C (14 °F),
- Mains plug, assembled,
- Completely assembled workpiece lead with clamp, 95 mm²
- Pressure regulator with manometer, 30 l
- Gas hose, 2 m





