The Hugong – INVERDELTA 400III 3 Phase Stick Welder 400V (3-phase), 19 kVA is designed for welding carbon steels, low-alloy steels, and stainless steels. It offers excellent weldability with Rutile (E6013), Basic (E7018), and Cellulosic (E6010) electrodes in diameters ranging from 1.6 mm to 5 mm, as well as carbon arc gouging electrodes from 4 mm to 8 mm.
This welder provides a wide current adjustment range of 15–400A with a true 60% duty cycle at 400A, ensuring high welding capacity and reliability. It features hot start and arc force adjustment knobs, a step-less current adjustment knob, and digital ammeter/voltmeter for precise control. Equipped with thermal and voltage protection, indicator lights, and a fan cooling system, the INVERDELTA 400III ensures safe and continuous operation.
Its robust design includes European-type quick connectors for easy cable connections, IP21S protection class, and generator-safe operation. Weighing only 19 kg, it is portable and suitable for site work, offering unbeatable performance for running large diameter rods or air arc gouging.
TECHNICAL DETAILS:
| Specification | Details |
| Brand | Hugong |
| Model | INVERDELTA 400III |
| Input Power | 400V (3-phase) |
| Max Input Current | 29A |
| Rated Input Capacity | 19 kVA |
| Rated Open Circuit Voltage | 82V |
| Welding Current Adjustment Range | 15–400A |
| Rated Output Duty Cycle | 60% @ 400A |
| Electrode Size | 1.6–5.0 mm |
| Carbon Arc Gouging Electrode Size | 4–8 mm |
| Weight | 19 kg |
| Dimensions (LxWxH) | 510 × 240 × 420 mm |
| Protection Class | IP21S |
| Cooling System | Fan cooled |
| Accessories | American type electrode holder with 4 m cable, 4 m earth cable with clamp |






