User manual for Electrex MMA inverter welding machines, covering features, operation, safety and technical data.
The Electrex MMA inverter series provides versatile welding solutions for MMA, TIG, MIG/MAG and plasma processes. The manual describes the inverter functions, optional accessories, and application fields such as metal structures, solar‑wind installations and shipbuilding.
Key sections include installation guidelines, operating controls, safety features like over‑temperature protection, and detailed technical specifications for each model (e.g., DC 163, DC 203, DC 503). The document also lists compatible accessories and provides a glossary of welding terms. This manual is written in Portuguese.
| Input voltage | 1x230V (+/- 10%) |
|---|---|
| Maximum MMA/TIG current (40% duty) | 160 A |
| Maximum MMA/TIG current (100% duty) | 105 A |
| Power rating | 11.3 kVA |
| Dimensions (L×W×H) | 360 mm × 220 mm × 440 mm |
The VRD reduces the open‑circuit voltage at the machine terminals, allowing safe operation with generators and in high‑shock environments.
When the preset voltage is reached, the inverter automatically turns off the arc (Arc OFF function).