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China Suppliers IGBT Dual Module 300AMP Portable ARC/MMA 400A Welding Machine Factory Direct Sale
Detailed Information
The MMA series arc welding machine is not only portable but also saves energy. It introduced the advanced IGBT/MOS (insulated gate bipolar transistor) and fast recovery diode as the main parts of controlling and delivering. IGBT/MOS can change 50Hz or 60Hz to 20 KHz. Because the electric current can regulate, the arc electric current obtains excellent weld craft adaptability. It features superheat, overpressure, and protection functions. Compared with traditional techniques, the advantage of the MMA inverter welder lies in saving energy, lighter weight, and a better structure. It is fit for outdoor decoration and fieldwork, mainly welding low carbon steel, stainless steel, metal alloy steel, cast iron, etc. Because of the adoption of appropriate lead arc electric circuit controls, it welds exceptionally well.
ARC-ECONOMIC is a manual inverter welder series made by the world's most advanced inverter technology. Inverter MMA welding power supply is an inverter arc welding machine that emerged in the 1980s in the international market. The 50Hz/60Hz frequency is inverted to high frequency (over 100KHz) by MOSFET, then steps down voltage and rectifies current. The inverter arc welding power supply generates a powerful DC welding current through PWM technology. Because the inverter technology of switch power is used, the dimensions and weight of the welding machine have reduced substantially, and efficiency has increased by 30%. Stability, reliability, lightness, energy savings, and no electromagnetic noise are characteristics of this welding machine series. The inverter welding machine is praised by specialists as a revolution in the welding field.
The welding machine obtains the 220V power frequency alternating current through switch sw101. After the inductance coil filter for the single plane rectification bridge MDQ3504*2 rectification, the electric capacity C1-C4 filter turns it to direct current. By way of the IGBT/MOS composition bridge type inverter, it is converted to 20KHZ alternating current, passing through the intermediate frequency transformer TI live pressure, and restores the diode DK1-DK6 rectification quickly. At last, it filters through the output reactor L101 and outputs a steady direct-current power supply for welding.
Main Features
- ♦ All movements adopt the latest and mature IGBT full-bridge inverter technology.
- ♦ The generator can be used directly without adding a capacitor board.
- ♦ Full network model, can input any voltage, no voltage conversion required.
- ♦ 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.
- ♦ Standard three-proof design, suitable for various conventional harsh environments, simple and convenient to operate.
- ♦ Application areas: hardware processing / decoration / outdoor installation / building construction and other civil fields.

Working Connection Diagram
Product Parameters
| Model | ZX7-400E | ZX7-500E | ||||
| 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: 130V-560V 50/60Hz
- ♦ Input cable: 4mm², length ≤ 3m
- ♦ Power switch: 63A
- ♦ Output cable: 25-35mm²
- ♦ Ambient temperature: -10℃~+40℃
- ♦ Usage condition: No blockage on air inlet & outlet. No sunlight exposure. Pay attention to dust prevention.
Standard Accessories
Optional Accessories
Frequently Asked Questions
Q1: What materials can the MMA series arc welding machine weld?
A1: It is mainly suitable for welding low carbon steel, stainless steel, metal alloy steel, cast iron, and other materials.
Q2: What are the main advantages of using IGBT/MOS inverter technology?
A2: Compared to traditional techniques, this technology makes the welding machine lighter, more energy-efficient (increasing efficiency by 30%), and provides better control over the output current for stable welding without electromagnetic noise.
Q3: Does the machine have safety protection functions?
A3: Yes, it is equipped with comprehensive protection functions, including undervoltage, overcurrent, and overheating protection to ensure safe and secure operation.
Q4: What are the installation requirements regarding input voltage and cables?
A4: The input voltage range is 130V-560V (50/60Hz). It requires a 4mm² input cable (length ≤ 3m), a 63A power switch, and a 25-35mm² output cable.
Q5: Can this welding machine be used in harsh outdoor environments?
A5: Yes. It is built with a standard three-proof design suitable for various conventional harsh environments. However, ensure that the air inlet and outlet are not blocked, avoid direct sunlight exposure, and pay attention to dust prevention.
Q6: What electrodes are recommended for the ZX7-400E and ZX7-500E models?
A6: For the ZX7-400E model, the suggested maximum electrode diameter is Φ2.5-5.0mm (depending on input voltage). For the ZX7-500E model, it supports up to Φ2.5-6.0mm electrodes.



