The BSAC series AC Transformer is the core energy unit in resistance welding systems, specifically designed for AC spot welding and projection welding machines. This series utilizes a high-permeability magnetic core and high-purity copper winding structure, efficiently converting mains frequency power into low-voltage, high-current output, ensuring a stable and reliable welding process.
This product is widely used in automotive manufacturing, hardware processing, home appliance production, and the low-voltage electrical industry, representing a highly cost-effective standard configuration in traditional welding production lines.
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40+ Patents and 2 National Software Copyrights, 10,000㎡ Factory with 100+ skilled employees.
Our Partners
We have served over 5,000+ customers worldwide, and our long-term partners include Tesla, BYD, and Siemens.Over 50+ Fortune 500 companies.
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Why Choose BSAC Series AC Transformer?
Proven AC Technology for Stability
Built on industrial-frequency power (50Hz), ensuring reliable and interference-resistant operation.
High Current Output
Capacity
Capable of delivering 10KA–50KA welding current, ideal for structural and thick material welding.
Efficient Water Cooling
System
Integrated cooling channels reduce heat buildup and ensure long-term performance under heavy-duty conditions.
Cost-Effective
Solution
30%–50% lower cost compared to MFDC transformers, with simpler maintenance requirements.
|
MODEL |
Rate Power |
Primary Power |
Duty Cycle |
Rated Input Current |
Secondary No-load Voltage |
Short Circuit Current |
|
BSAC-25 |
25 KVA |
380 KVA 50HZ |
50% |
66A |
4V |
20KA |
|
BSAC-50 |
50 KVA |
380 KVA 50HZ |
50% |
131 A |
6.4 V |
26 KA |
|
BSAC-75 |
75KVA |
380 KVA 50HZ |
50% |
197 A |
7.3 V |
30 KA |
|
BSAC-100 |
100 KVA |
380 KVA 50HZ |
50% |
263 A |
8 V |
35 KA |
|
BSAC-125 |
125 KVA |
380 KVA 50HZ |
50% |
328 A |
8.8 V |
40 KA |
|
BSAC-160 |
160 KVA |
380 KVA 50HZ |
50% |
421 A |
10 V |
46 KA |
|
BSAC-200 |
200 KVA |
380 KVA 50HZ |
50% |
526 A |
10.8 V |
53 KA |
|
BSAC-250 |
250 KVA |
380 KVA 50HZ |
50% |
657 A |
11.8 V |
58 KA |
|
BSAC-300 |
300 KVA |
380 KVA 50HZ |
50% |
921 A |
12.7 V |
63 KA |
|
BSAC-400 |
400 KVA |
380 KVA 50HZ |
50% |
1052 A |
11V - 16V |
72 KA |
Typical Applications
These industries are all mainstream application areas for resistance welding.
Automotive
Seat frames, structural components
Electrical
Contacts, copper parts
Hardware
Brackets, wire mesh, sheet metal
Home appliances
Compressor shells, metal housings
AC vs MFDC Transformer
| Item | AC Transformer | MFDC Transformer |
|---|---|---|
| Frequency | 50Hz | 1kHz |
| Precision | Medium | High |
| Energy Efficiency | Lower | Higher |
| Cost | Lower | Higher |
| Application | Standard welding | Precision welding |
Why Choose Our BSAC series AC Transformer?
The transformer is a critical component of a welding machine, directly affecting energy conversion efficiency and temperature rise control. Purchased transformers often use standard iron cores, making them difficult to match specific operating conditions.
Haifei, through simulation optimization of the magnetic circuit structure and the use of German integrated casting technology, has increased the conversion efficiency to over 96%.
This not only reduces energy consumption but also extends the continuous operating time of the equipment, making it particularly suitable for high-intensity welding scenarios such as automotive body-in-white.
FAQ
Q: What is an AC Transformer?
A: It is a device that converts industrial power into high current for resistance welding processes like spot welding and projection welding.
Q: What is the maximum output current?
A: Up to 50KA depending on the model.
Q: Can you customize the transformer?
A: Yes, we provide custom solutions based on your welding requirements and equipment setup.
Get Your Welding Solution Today
Whether you need a standard model or a fully customized welding transformer, our engineering team is ready to help.
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One-Stop Solution
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Fast quotation within 24 hours
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Wuxi Haifei Intelligent Equipment Co., Limited is one of the leading manufacturers and suppliers of ac transformer in China. With abundant experience, we warmly welcome you to buy advanced ac transformer for sale here from our factory. Quality products and reasonable price are available.
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