Hot Products
0102030405
250A/300A Engineering High Duty Cycle Portable ARC/MMA Welder - China Factory Suppliers with IGBT Inverter Technology
When installing, it should be installed in a place that can bear the weight of the welding machine. It is strictly forbidden to install in places where water droplets may splash, such as water pipes. The welding operation should be carried out in a relatively dry environment, and the air humidity should generally not exceed 90%. Avoid welding work in dusty areas or environments containing corrosive gases. Avoid placing the machine on a table with a slope greater than 15° for welding work.
When the welding machine is in operation, a large working current passes through it, and natural ventilation cannot meet the cooling requirements of the welding machine, so a fan is installed inside to effectively cool the welding machine to make it work smoothly. The user should confirm that the ventilation is not covered or blocked, and the distance between the welding machine and surrounding objects should not be less than 0.3 meters.
In general, the voltage automatic compensation circuit in the welding machine will ensure that the welding current remains within the allowable range, if the power supply voltage exceeds the allowable value, the welding machine will be damaged.
The user should pay attention to use the welding machine according to the allowable load duration rate of the welding machine, and keep the current of the welding machine not exceeding the maximum allowable load current. Current overload will significantly shorten the service life of the welder, and may even burn the welder. If the welding machine exceeds the standard load continuation rate, the welder may suddenly enter the protection state and stop working, which means that the welder exceeds the standard load continuation rate, and the excessive heat triggers the temperature control switch, so that the welder stops working. The protection light on the front panel lights up. In this case, you should not unplug the power plug, so that the cooling fan can continue to work to cool the welder. After the protection indicator light goes out and the temperature drops to the standard range, welding can be restarted.
All movements adopt the latest and mature IGBT full-bridge inverter technology.
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
| Model | ZX7-400G | ZX7-500G |
| Input Voltage | AC 380V | AC 380V |
| Input Frequency | 50Hz/60Hz | 50Hz/60Hz |
| Rated Input Capacity | 13.3Kva | 15.2Kva |
| Rated Input Current | 20A | 23A |
| No Load Voltage | 67V | 70V |
| Rated Output | 295A/31.8V | 330A/32V |
| Output Current Range | 30-400A | 30-500A |
| Rated Duty Cycle | 80% | 40% |
| Efficiency | 80% | 80% |
| Insulation Class | F | F |
| Shell Protection Grade | IP21S | IP21S |
| Suggested Electrode Max. | Φ2.5-5.0mm | Φ2.5-5.0mm |
| Dimensions | 470*235*435mm | 515*265*480mm |
♦ 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.
1x Electrode Holder
1x Ground Clamp
1x Welding Mask
1x Brush/Hammer
Welding Helmet
Welding Gloves
Electrodes E6013
Lift TIG TORCH
Q: What environmental conditions are required for installing the welding machine?
A: The welding machine must be installed in a location capable of bearing its weight, in a relatively dry environment (humidity not exceeding 90%), and away from splashing water, dust, or corrosive gases. Avoid using it on tables with a slope greater than 15°.
Q: What are the ventilation requirements for the welder during operation?
A: To ensure proper cooling from the internal fan, the ventilation ports must not be covered or blocked. A minimum clearance of 0.3 meters must be maintained between the welding machine and surrounding objects.
Q: What happens if the input voltage exceeds the allowable range?
A: Although the welder features an automatic voltage compensation circuit to stabilize the current, input voltage that exceeds the allowable limit will cause damage to the machine.
Q: What should I do if the welder enters the protection state and stops working?
A: If the protection light turns on, do not unplug the power. Keep the machine connected so the cooling fan can continue running to cool the welder. Once the protection indicator turns off and the temperature drops to the standard range, you can restart welding.
Q: What are the electrical input requirements for installing this welder?
A: It requires an input voltage of 380V AC±10% (50/60Hz), an input cable of 4mm² (length ≤ 3m), and a 63A power switch.
Q: What types of electrodes are suitable for this welding machine?
A: Thanks to the advanced IGBT full-bridge inverter technology, the machine delivers stable welding performance with acid/alkaline electrodes and stainless steel electrodes.