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ESAB ESAB LAF 635 DC und PC A"-A6

SAW Welding System (Submerged Arc Welding)

with Process Controller A2–A6 and ESAB LAF 635 DC
Year of manufacture: 2000
Condition: Good, fully operational (from educational institution)

For sale is a powerful submerged arc welding system (SAW) consisting of the ESAB DC power source LAF 635 and an A2–A6 process controller (version-specific PEH/PEK system). The unit comes from an educational facility, where it was primarily used for training—typically well-maintained and regularly inspected.

Ideal for automated/mechanized submerged arc welding, e.g. in steel construction, tank fabrication, pipe/profile production, hardfacing (depending on welding head/tractor/gantry – if available).

Technical Data – ESAB LAF 635 DC (Power Source)

Device type: remotely controlled 3-phase DC welding power source for SAW or mechanized MIG/MAG

Power supply: 400/415 V, 3~ 50 Hz (alternatively 440 V, 3~ 60 Hz)

Duty cycle:

630 A / 44 V at 100%

Adjustment range: 75 A / 18 V to 800 A / 44 V (max. 46 V)

Open-circuit voltage: 54 V

Idle power consumption: 150 W

Efficiency: 0.84

Power factor (cos φ): 0.90
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Protection class: IP23

Weight: approx. 260 kg

Dimensions (L × W × H): 652 × 483 × 800 mm (or 652 × 483 × 916 mm including base)

Fusing / Main supply (reference per manual): e.g. 63 A slow-blow, supply cable 4 × 16 mm², line current at 100% 52 A (at 400/415/440 V)

Technical Data – A2–A6 Process Controller (PEH / A2–A6)

The A2–A6 Process Controller is used for process control/regulation of the mechanized welding system and is designed for SAW operations.

Rated voltage (supplied via power source): 42 V AC, 50/60 Hz

Rated power consumption: max. 900 VA

Motor connections: for ESAB A2 or A6 motors

Motor current: 5 A continuous, max. 10 A

Wire feed control: internal EMF control or with AC tachometer (6 pulses/rev)

Condition & Origin

Good, well-maintained condition (training/educational environment)

System is fundamentally designed for industrial use (mechanized SAW / MIG/MAG)

ESAB LAF 635 DC Power Source

A2–A6 Process Controller (control and operating unit)

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