ESAB LHF 630 Rectifier
The ESAB LHF 630 Rectifier is a heavy-duty, thyristor-controlled welding power source, designed for manual MMA welding with covered electrodes using direct current. Optimized for demanding industrial applications, the LHF 630 delivers consistent performance, even in the toughest environments. With a high output of 630 amps, it can handle the most challenging welding and arc-air gouging tasks, making it ideal for shipbuilding, construction, and heavy fabrication industries.
Featuring hot start and anti-stick functions, the LHF 630 ensures excellent arc ignition and control. Its wide current and voltage range allows it to accommodate a variety of filler materials, while the vertical static characteristics provide stable current regardless of cable length or arc voltage. For added flexibility, this unit is capable of both MMA and TIG welding when fitted with optional TIG add-ons.
Key Features:
- Heavy-duty, thyristor-controlled rectifier designed for MMA welding and arc-air gouging.
- Capable of delivering up to 630 amps for high-output welding operations.
- Wide current and voltage range for versatile applications.
- Hot start and anti-stick features for improved arc control and ignition.
- Vertical static characteristics ensure stable current, even over long cables.
- Optimized for both MMA and TIG welding with additional add-ons.
- Mobile design with large wheels for easy transportation in industrial settings.
Key Industry Applications:
- Shipbuilding: Ideal for heavy-duty welding and gouging tasks in shipyards, providing reliability in high-output applications.
- Construction: Designed for large-scale civil construction projects requiring high amperage welding for structural steel.
- Heavy Fabrication: Perfect for fabrication workshops handling thick, heavy materials in industrial manufacturing.
- Repair and Maintenance: Suitable for demanding repair operations where precise and powerful welding is necessary.
Technical Specifications:
| Input Voltage | 400/415/500 V, 3-phase, 50 Hz |
|---|---|
| Duty Cycle | 35%: 630 A, 60%: 500 A, 100%: 400 A |
| Setting Range | 8 A/20V – 630 A/44(49)V |
| Open Circuit Voltage | 65-72 V |
| Power Factor | 0.87 |
| Efficiency | 77% |
| Dimensions | 1310 x 765 x 705 mm |
| Weight | 260 kg |
| Enclosure Class | IP 23 |
| Operating Temperature | -10°C to +40°C |
The ESAB LHF 630 Rectifier is a powerful, reliable solution for industries requiring high-amperage welding and gouging capabilities, offering flexibility, precision, and durability for tough applications.
It is a thyristor controlled welding rectifier designed for welding with coated electrodes, TIG welding and arc air gouging. It is compatible with the following remote control devices: PHA 1, PHA 2, PHA 5, PHB 1, PHB 2, och PHC 2. An auxiliary control unit is required for TIG welding with high frequency arc ignition.
