0102030405
300Amp High Performance ARC Welder - IGBT Inverter, Double Working-Station, China Suppliers & Factory Model
Detailed Information
Check the internal circuit connection of the welder regularly to make sure that the circuit connection is correct and the connection head is firm (especially the insert connector or component). If rust or looseness is found, sand paper should be used to grind off the rust layer or oxidation film, reconnect it and tighten it. Check all cable insulated leathers regularly for any breakage, or else bind up or replace the cable.
To avoid electrostatic damage to semiconductor components and circuit boards, please wear anti-static devices, or by touching the metal parts of the case to remove static electricity beforehand touching the wiring conductor and circuit board inside the welder.
Avoid water or water vapor entering the welder. Dry it if damped inside. Then, measure the insulation of the welder with an ohmmeter (between the connection nodes and between the connection point and the housing). Be aware that continuous welding is performed only when no abnormalities are found. If the welder is idle for a long time, put it in the original packaging case and stored in a dry environment.
Main Features
- All movements adopt the latest and mature IGBT full-bridge inverter technology.
- Φ4.0 electrode special for engineering construction models.
- Use 100m cable with small current attenuation.
- IGBT single tube, professional device performance.
- Acid/alkaline electrodes, stainless steel electrodes for stable welding.
- Complete undervoltage, overcurrent, overheating and other protection functions, safe and secure.
- The thrust current is continuously adjustable, effectively solving the problems of sticking welding rod and arc interruption.
- Accurate digital display current preset, easy and intuitive operation.
- Standard three-proof design, suitable for various conventional harsh environments, simple and convenient to operate.

Working Connection Diagram
Product Parameters
| Model | ZX7-400G | ZX7-500G | ||||
| Input Voltage | AC 220V 2Phase | AC 380V 2Phase | AC 380V 3Phase | AC 220V 2Phase | AC 380V 2Phase | AC 380V 3Phase |
| Input Frequency | 50Hz/60Hz | 50Hz/60Hz | ||||
| Rated Input Capacity | 9.3Kva | 14.1Kva | 10Kva | 20.5Kva | ||
| Rated Input Current | 42A | 37A | 21A | 46A | 54A | 31A |
| No Load Voltage | 74V | 67V | 82V | 72V | ||
| Rated Output | 220A/28.8V | 300A/30V | 300A/30V | 240A/29.6V | 400A/36V | 400A/36V |
| Output Current Range | 30-400A | 30-500A | ||||
| Rated Duty Cycle | 40% | 40% | ||||
| Efficiency | 80% | 80% | ||||
| Insulation Class | F | F | ||||
| Shell Protection Grade | IP21S | IP21S | ||||
| Suggested Electrode Max. | Φ2.5-4.0mm | Φ2.5-5.0mm | Φ2.5-4.0mm | Φ2.5-6.0mm | ||
| Dimensions | 340*190*330mm | 370*200*355mm | ||||
Installation Attentions
Input voltage: 380V AC±10% 50/60Hz
Input cable: 4mm², length ≤ 3m
Power switch: 63A
Output cable: 25-35mm²
Ambient temperature: -10℃~+40℃
Usage condition: No blocked on air inlet & outlet. No sunlight exposure. Pay attention to dust prevention.
Standard Accessories
1x Electrode Holder
view detail
1x Ground Clamp
view detail
1x Welding Mask
view detail
1x Brush/Hammer
view detail
Optional Accessories
Welding Helmet
view detail
Welding Gloves
view detail
Electrodes E6013
view detail
Lift TIG TORCH
view detail
Frequently Asked Questions
How should the internal circuit connections of the welder be maintained?
You should check the internal circuit connection regularly to ensure it is correct and tight. If rust or looseness is found, use sand paper to grind off the rust or oxidation layer, then reconnect and tighten it securely.
How can I prevent electrostatic damage to the internal components?
Before touching any wiring conductor or circuit board inside the welder, always wear anti-static devices or touch the metal parts of the welder housing to safely discharge static electricity.
What should be done if water or water vapor enters the welder?
If moisture enters the welder, dry the interior thoroughly. Before resuming operation, measure the insulation resistance with an ohmmeter between the connection nodes and between the connection point and the housing. Only proceed if no abnormalities are detected.
What are the core inverter technologies used in these welders?
The ZX7 series welders utilize the latest mature IGBT full-bridge inverter technology alongside IGBT single tube designs for professional device performance and stable output.
What are the power and cable requirements for installation?
The system requires an input voltage of 380V AC±10% at 50/60Hz, a 4mm² input cable (length ≤ 3m), a 63A power switch, and output cables within the 25-35mm² range.



