Comprehensive information of the National IV 500A diesel-powered electric welding machine:
1. Core parameters
Electric welding machine parameters
Rated current: 500A (adjustable range: 0-500A)
Rated voltage: 26-30V, no-load voltage: 65V
Welding rod diameter: 2.0-8.0mm (some models support dual-station welding)
Welding mode: Supports manual welding, gas shielded welding, argon arc welding, etc. (optional for some models)
Generator parameters
Rated power: 28KVA
Voltage output: 220V/380V, single-phase or three-phase, with 110V and other options available
Frequency: 50Hz, Rotation Speed: 1500rpm, 60Hz: 1800rpm
Engine parameters
Model: TO4100D (four-cylinder naturally aspirated) (four-cylinder turbocharged)
Rated power: 31KW, displacement: 3.5L-3.61L
Cooling method: enclosed water cooling; enclosed air cooling
Fuel consumption: approximately 206g/kW·h, with a fuel tank capacity of 50L-60L
II. Functional Features
Multi-process support: Some models integrate gas shielded welding and argon arc welding functions to accommodate welding needs for different materials.
Synchronized operation: Electric welding and power generation can be carried out simultaneously without affecting each other's voltage waveform.
Environmental performance: Meets the National IV emission standard and adopts low-emission combustion technology67.
III. Brand and Price
Mainstream brands: powertrain combinations; Dazawa Power, Yanmar, Kubota, Cummins, Benne Power, etc.
It is suitable for outdoor construction, oilfield operations, steel structure welding, and other scenarios, especially for environments without power supply or requiring mobile operations.


Model: | TO400A | TO500A | TO600A |
Electric welding machine parameters: single station/double station |
Rated current | 400A | 500A | 600A |
Current Regulation | 50-400A | 50-500A | 50-600A |
electrode diameter | 2.0-8.0MM | 2.0-8.0MM | 2.0-8.0MM |
no-load voltage | 75V | 75V | 75V |
Rated voltage: | 26-30V | 26-30V | 26-30V |
Efficiency: | 85% | 85% | 85% |
CO2 gas shielded welding/argon arc welding parameters: |
Current Regulation | 50-400A | 50-500A | 50-600A |
Welding machine voltage: | 16.5-50V | 16.5-50V | 16.5-50V |
Welding wire diameter: | 0.8-1.6MM | 0.8-1.6MM | 0.8-1.6MM |
Wire feeding type: | Pushing silk | Pushing silk | Pushing silk |
Generator parameters: |
Rated power: | 28KVA | 28KVA | 45KVA |
Rated voltage: | 400V | 400V | 400V |
Frequency: | 50HZ | 50HZ | 50HZ |
Speed: | 1500RPM | 1500RPM | 1500RPM |
Insulation level: | H | H | H |
oil consumption: | 225g.kw/h | 225g.kw/h | 225g.kw/h |
Engine parameters: |
Engine model | TO490Q | TO495Q | TO500Q |
Engine power: | 31KW | 31KW | 55KW |
Engine exhaust system | National III/National IV | National III/National IV | National III/National IV |
Air intake method: | turbocharging | turbocharging | turbocharging |
Cooling method: optional | Water cooling/air cooling | Water cooling/air cooling | Water cooling/air cooling |
Number of cylinders: | Four cylinder | Four cylinder | Four cylinder |
Complete machine parameters: |
Weight: | 680/690KG | 680/700KG | 950/1100 |
Standard configuration: Dazawa power; Optional configurations: DEUTZ, Kubota, Yanmar, Isuzu engine drive |