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Engine Driven Welders
Created with Pixso. GENWELD LWG-400 Heavy Duty Diesel Welding Generator with 400A Dual Welding Output and 20 kW Brushless Alternator on Silent Mobile Trailer
Detail Information
Place of Origin:
Chongqing, China
Packaging Details:
1480 × 800 × 999 mm
Supply Ability:
150 units/month
Highlight:

400A Dual Welding Output Welding Generator

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20 kW Brushless Alternator Diesel Welder

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Silent Mobile Trailer Engine Driven Welder

Product Description
GENWELD LWG-400 Heavy Duty Diesel Dual Operator Welding Generator 400A Silent Mobile Trailer Welders for Construction
Product Overview
400A DIESEL DUAL WELDING GENERATOR
Heavy-duty mobile welding generator featuring dual independent welding outputs and robust auxiliary power generation.
Key Features
  • Two independent welding outputs, up to 400 A each on FCAW
  • Single-output mode provides up to 400 A, covering standard 400A stick work
  • 20 kW brushless alternator with AC 400 V three-phase and AC 230 V single-phase output
  • Weichai, Kubota or Yanmar engine options
  • Weighs 560-680 kg and measures 1480 × 800 × 999 mm - smaller and lighter than the LWG-500, easier to move with a forklift or on site
Technical Specifications
WELDING SPECIFICATIONS
Model LWG400
Dual welding (A & B) Handle A Handle B
Welding Processes Stick | TIG Stick | TIG | FCAW
No-load voltage 76 | 0 76 | 0
Current Range (30-200A)X2 14-40V
Welding Current (A) 155 | 200 | 155 | 200 155 | 200 | 155 | 200 | 155 | 200
Welding Voltage (V) 26.2 | 28 | 16.2 | 18 26.2 | 28 | 16.2 | 18 | 21.8 | 24
Duty Cycle (%) 100 | 60 | 100 | 60 100 | 60 | 100 | 60 | 100 | 60
External Characteristic Drop Flat
Single welding (A or B) Handle A Handle B
Welding Processes Stick | TIG Stick | TIG | FCAW
No-load voltage 76 | 0 76 | 0
Current Range 30-200A | 30-400A 14-40V
Welding Current (A) 155 | 200 | 155 | 200 | 310 | 400 310 | 400 | 310 | 400 | 310 | 400
Welding Voltage (V) 262 | 28 | 16.2 | 18 | 32.4 | 36 22.4 | 26 | 29.5 | 34
Duty Cycle (%) 100 | 60 | 100 | 60 | 100 | 60 100 | 00 | 100 | 60
External Characteristic Drop Flat
GENERATING SPECIFICATIONS
Rated Power 20kW (Max 22kW)
Excitation Type AVR Brushless Excitation
Frequency 50Hz/60Hz
Phase Tri-phase | Single Phase Tri-phase | Single Phase
Output AC400V/16kW | AC230V/6.9kW AC400V/16kW | AC230V/6.9kW
ENGINE SPECIFICATIONS
Model Weichai WP2.3D25 Kubota V1305 | Yanmar 4TMV88
Fuel Diesel
Rated Power 23kW (Max 25kW) 19kW (Max 21kW) | 19.6kW (Max 21.6kW)
Rated Speed 1500r/min 3000r/min | 1800r/min
Warning Type Water Temperature / Oil Pressure / Battery Charge
Cooling Method Water-cooled
WHOLE SET SPECIFICATIONS
Fuel Consumption 5.0L/hr | 5.0L/hr
Fuel Capacity 70L | 70L
Protection Class IP23 | IP23
Weight (kg) 680 | 560 | 680
Dimension (mm) 1480*800*999 | 1480*800*999
Standard Accessories
  • 2× welding cable connectors (red/black)
  • 2× electrode holder
  • 2× ground clamp
  • 1× 1-phase European plug 230 V / 16 A (1P+N+E, 5-pin, IP66)
  • 1× 1-phase European plug 230 V / 32 A (1P+N+E, 5-pin, IP66)
  • 1× 3-phase European plug 3P+N+E (5-pin, 63 A / 400 V, IP66)
  • 2× 300 A manual welding remote control connector and rheostat
Typical Applications
  • General fabrication and repair shops
  • Building site welding and site power
  • Agricultural and light industrial equipment maintenance
  • Rental fleets and mobile repair units
GENWELD LWG-400 Heavy Duty Diesel Dual Operator Welding Generator
Frequently Asked Questions
How does the LWG-400 compare to the LWG-500?
The LWG-400 delivers up to 400 A versus 500 A on the LWG-500, and 20 kW versus 25 kW auxiliary power. It is correspondingly lighter, smaller and consumes about 20% less fuel, which makes it the better fit for maintenance fleets and mid-scale fabrication.
Is 400 A enough for structural steel?
Yes for most structural work. For heavy continuous welding on thick sections or long production runs, the LWG-500 with higher thermal capacity is the better choice.
Can I power tools from it while welding?
Yes. Three-phase AC 400 V / 16 kW and single-phase AC 230 V / 6.9 kW auxiliary output is available while welding.