The MFAC Inverter Spot Welder is designed for stable, cost-effective resistance welding in industrial production environments.
Using a three-phase inverter system, it converts standard power into mid-frequency AC output, delivering high current with reduced grid impact and improved weld consistency.It is widely used in: Automotive manufacturing,Electrical components,Metal fabrication,Busbar and sheet metal welding.
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Technical Principles of MFAC Inverter Spot Welder
| The MFAC inverter system | Result |
| Converts three-phase input into DC | Reduced energy loss |
| Uses inverter to generate mid-frequency AC (40–150Hz) | Stable welding current |
| Outputs high current via welding transformer | Improved consistency |
What are the core advantages of MFAC Inverter Spot Welder?
Stable Welding Performance
- Low-voltage, high-current output ensures strong weld nuggets
- Suitable for steel, stainless steel, and coated materials
01
Lower Power Demand on Grid
- Inverter conversion reduces power fluctuation
- Ideal for factories with limited power capacity
02
Cost-Effective Compared to MFDC
- Lower initial investment
- Easier maintenance
- Familiar AC system for most factories
03
High Reliability & Long Service Life
- AC transformer structure is robust
- Lower failure rate vs high-frequency DC systems
04
Welded Products
Specification and Parameters
|
|
Items \ Model |
unit |
HFBP-50 |
HFBP-100 |
HFBP-200 |
HFBP-350 |
|
1 |
Rated capacity |
KVA |
63 |
100 |
200 |
300 |
|
2 |
Power supply |
V/Ø/Hz |
380V±10% / 3 phases / 50Hz |
|||
|
3 |
Rated duty cycle |
% |
20% |
20% |
20% |
20% |
|
4 |
Primary current Max. |
A |
45 |
100 |
200 |
300 |
|
5 |
Primary cable |
mm2 |
3*16+2*6 |
3*35+2*16 |
3*50+2*16 |
3*70+2*16 |
|
6 |
Short-circuit current Max. |
KA |
20 |
30 |
43 |
58 |
|
7 |
Secondary voltage |
V |
5.9 |
8.4 |
7.4/9.7 |
9.7/12 |
|
8 |
Air pressure cylinder |
Ø*L |
Ø125*80 |
Ø160*120/ |
Ø160*120/ |
Ø200*120/ |
|
9 |
Working pressure Max. (0.5/10.5MPa) |
KN |
6 |
10/6 |
10/15 |
15/24 |
|
10 |
Cooling water demand |
/ |
0.2～0.3MPa,40 micron filtration, Resistivity of 5 kΩ. cm |
|||
|
11 |
Cooling water consumption |
L/Min |
20 |
25 |
35 |
50 |
|
12 |
Throat depth |
mm |
460 |
425 |
425 |
380 |
|
13 |
Distance between copper plates |
mm |
208 |
248 |
248 |
320 |
|
14 |
Working environment |
|
temperature: 1～45℃ humidity: 35～90％ |
|||
Application industries
Automotive Industry
- Seat frames
- Brackets
- Reinforcement structures
Electrical & Busbar Industry
- Copper/aluminum connections
- Switchgear components
Sheet Metal Fabrication
- Cabinets
- Enclosures
- Structural parts
Weldable materials
01
Carbon steel
02
Stainless steel
03
Galvanized steel
04
Copper
05
Aluminum
06
Nickel alloys
MFAC vs MFDC vs Capacitor
| Type | Advantage | Limitation | Best Use |
|---|---|---|---|
| MFAC | Low cost, stable | Lower precision | General industry |
| MFDC | High precision, energy saving | Expensive | Automotive / high-end |
| Capacitor | Fast discharge | Limited thickness | Battery welding |
FAQ
Q: What is an MFAC inverter spot welder?
A: An MFAC spot welder uses inverter technology to convert power into mid-frequency AC output, providing stable current and consistent weld quality for industrial applications.
Q: Can MFAC weld copper or aluminum?
A: Yes, but performance is limited.For high-quality copper or aluminum welding, MFDC or capacitor welders are recommended.
Q: What thickness can it weld?
A: Typically:
- 0.5 mm – 3.0 mm (standard)
- Up to ~6.0 mm (depending on KVA)
Q: Is MFAC suitable for automation?
A: Yes. It can integrate with robots, PLC systems, and automated production lines.
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