Portable MMA ARC Welding Machine MMA Inverter Welding
1.Brief Introduction
The MMA welder is engineered with premium imported IGBT and fast recovery diodes as its core electric components. Augmented by a meticulously developed main PCB board, it ensures uniform regulation of welding current, guaranteeing an exceptional arc with superior welding process adaptability. Furthermore, its impeccable dynamic protection features provide unrivaled safety and reliability. This welding marvel is perfectly suited for materials such as low carbon steel, stainless steel, and alloy steel.
MMA Features:
1. High duty cycle of 25%.
2. Lower operational costs with enhanced portability, compact design, and superior output.
3.
3. Excellent arc characteristics and exceptional solution droplet transfer.
4. Comprehensive protection against overheating, over-voltage, and over-current.
5. Digital display functionality (exclusive to plastic shell models).
6.
6. Convenient plastic handle for effortless carrying.
7.
7. Quick-connect output for swift, safe, and stable operations.
*NOTES: Specifications are subject to change without prior notice to accommodate enhancements and improvements.
2.Technical Description
2.1 Environment
* Operating temperature range: -10ºC to 40ºC.
* Storage and transportation temperature range: -25ºC to 55ºC.
* Relative humidity: 50% at 40ºC, 90% at 20ºC.
* Ambient air must have minimal dust, acids, and corrosive gases, except those generated during the welding process.
* Maximum altitude: 1 km.
* Ensure proper ventilation with a clearance of 50cm around.
* Place in an area with a wind speed of at least 1m/s.
2.2 Input Power
* Power supply should be sine wave with frequency fluctuations within ±1% of its rating.
* Input voltage fluctuations should not exceed ±10% of the rated value.
2.3 Equipment Principle
*NOTES: Utilizing advanced inverter technology, the core components include:
Rectifier → Filter → IGBT → Transformer → Rectifier → Choke
2.4 Equipment Structure
The MMA Inverter DC Welder features a portable cabinet design. The front panel includes a welding current adjustment knob, power indicator (green), and abnormal indicator (yellow). The output terminals have quick connectors for both '+' and '-'. The back panel houses the power switch, motor fan, and input power cable. Internally, it comprises the PCB main board, various electronic components,and radiator.
2.5 Guide for Marking Models
For instance, MMA-160 signifies an Inverter MMA (Manual Metal Arc Welding) machine with a rated output current of 160A..
2.6 Parameter
| Item/Model |
MMA-120 |
MMA-140 |
MMA-160DS |
MMA-180DS |
MMA-200DS |
MMA-220DS |
| Rated Input Voltage (V) |
230±10% |
230±10% |
230±10% |
230±10% |
230±10% |
230±10% |
| Frequency (Hz) |
50/60 |
50/60 |
50/60 |
50/60 |
50/60 |
50/60 |
| Rated Input Capacity (KW) |
5.0 |
5.9 |
6.9 |
7.8 |
9.2 |
9.5 |
| Rated Input Current (A) |
21.8 |
26 |
30 |
34 |
40 |
49 |
| Rated Duty Cycle |
40% @ 120A |
40% @ 140A |
40% @ 160A |
40% @ 180A |
40% @ 200A |
40% @ 220A |
| No Load Voltage (V) |
67 |
67 |
67 |
67 |
67 |
67 |
| Output Current Range (A) |
10~120 |
10~140 |
10~160 |
10~180 |
10~200 |
10~220 |
| Efficiency (%) |
≥85 |
≥85 |
≥85 |
≥85 |
≥85 |
≥85 |
| Protection Class |
IP21S |
IP21S |
IP21S |
IP21S |
IP21S |
IP21S |
| Insulated Grade |
H |
H |
H |
H |
H |
H |
| Electrode Size (mm) |
1.6~3.2 |
1.6~3.2 |
1.6~4.0 |
1.6~4.0 |
1.6~4.0 |
1.6~5.0 |
| Cooling Type |
AF |
AF |
AF |
AF |
AF |
AF |
| Overall Dimension (mm) |
312*120*183 |
312*120*183 |
312*120*183 |
312*120*183 |
312*120*183 |
312*120*183 |
| Net Weight (KG) |
3.5 |
3.5 |
3.7 |
3.8 |
4.2 |
5.0 |
| Item/Model |
MMA-145H |
MMA-160H |
MMA-200H |
MMA-160HL |
MMA-200HL |
| Rated Input Voltage (V) |
230±10% |
230±10% |
230±10% |
110\220±10% |
110\220±10% |
| Frequency (Hz) |
50/60 |
50/60 |
50/60 |
50/60 |
50/60 |
| Rated Input Capacity (KW) |
6.6 |
6.9 |
9.2 |
6.9 |
8.1 |
| Rated Input Current (A) |
30 |
34 |
40 |
34 |
40 |
| Rated Duty Cycle |
60% @ 145A |
60% @ 160A |
60% @ 200A |
60% @ 160A |
40% @ 190A |
| No Load Voltage (V) |
67 |
67 |
67 |
85 |
85 |
| Output Current Range (A) |
10~145 |
10~160 |
10~200 |
110V:10~120
220V: 10~160 |
110V:10~120
220V: 10~190 |
| Efficiency (%) |
≥85 |
≥85 |
≥85 |
≥85 |
≥85 |
| Protection Class |
IP21S |
IP21S |
IP21S |
IP21S |
IP21S |
| Insulated Grade |
H |
H |
H |
H |
H |
| Electrode Size (mm) |
1.6~3.2 |
1.6~4.0 |
1.6~5.0 |
1.6~4.0 |
1.6~4.0 |
| Cooling Type |
AF |
AF |
AF |
AF |
AF |
| Overall Dimension (mm) |
312*120*183 |
378*120*183 |
420*148*216 |
378*120*183 |
420*148*216 |
| Net Weight (KG) |
4.6 |
4.8 |
7.3 |
4.8 |
5.2 |
| Item/Model |
MMA-140D |
MMA-160D |
MMA-160G |
MMA-200G |
| Rated Input Voltage (V) |
110±10% |
110±10% |
230±10% |
230±10% |
| Frequency (Hz) |
50/60 |
50/60 |
50/60 |
50/60 |
| Rated Input Capacity (KW) |
4.5 |
8.1 |
5 |
6 |
| Rated Input Current (A) |
38 |
5.5 |
21 |
28 |
| Rated Duty Cycle |
40% @ 120A |
40% @ 140A |
25% @ 120A |
25% @ 150A |
| No Load Voltage (V) |
85 |
85 |
61 |
61 |
| Output Current Range (A) |
10~120 |
10~140 |
10~120 |
10~150 |
| Efficiency (%) |
≥85 |
≥85 |
≥85 |
≥85 |
| Protection Class |
IP21S |
IP21S |
IP21S |
IP21S |
| Insulated Grade |
H |
H |
H |
H |
| Electrode Size (mm) |
1.6~3.2 |
1.6~4.0 |
1.6~3.2 |
1.6~4.0 |
| Cooling Type |
AF |
AF |
AF |
AF |
| Overall Dimension (mm) |
312*120*183 |
312*120*183 |
312*120*183 |
312*120*183 |
| Net Weight (KG) |
3.5 |
3.8 |
3 |
3.2 |
2.7 Standard
* EN 60974-1: Arc Welding Machine Standards
* JB / T 7824-95: Technical Conditions of Inverter Arc Welding Rectifier
* GB 4208-93: Protection Class (IP Code)
3. Interconnection Diagram
Circuit Schematic of INARC Welder
(Please note that figures are for reference only and may be subject to change without prior notice.)
4. Transportation and Storage
* This machine is designed for indoor use only. It is crucial to protect it from rain and snow during transportation and storage. Handles with care, especially when packages are marked with warning labels. The storage environment must be dry, well-ventilated, and free from corrosive gases or dust. Maintain temperatures between -25ºC to 55ºC with relative humidity below 90%.
* If prolonged storage is necessary after unpacking, repack the items according to the original packaging guidelines. Ensure the product is clean and sealed in plastic bags before storage.
* Maintain the integrity of cartons and shock blocks for secure packaging during long-distance transportation. For lengthy journeys, use wooden crates and clearly mark packages with 'up' or 'rain' symbols to ensure proper handling.
5. Quality Warranty
If the machine is operated in strict accordance with the guidelines in the operation manual,and complies with rules on installation, storage, use, and maintenance,the manufacturer commits to providing free services to userswithin 12 months from the date of purchase, as indicated on the invoice.
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