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Welding Transformers
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20KVA-3.8V-2 Welding Transformer
| Power source(U1) | 380V |
| Secondary unload voltage(U20) | 3.8V |
| Duty cycle | 20% |
| Power at 10% duty cycle(S10) | 35KVA |
| Power at 20% duty cycle(S20) | 20KVA |
| Power at 100% duty cycle(SP) | 9KVA |
| 100% load current output(IP) | 2400A |
| Maximum short-circuit current for circuits with 500（L）* 300（H）mm | 13.3KA |
| Maximum short-circuit current for circuits with 1000（L）* 300（H）mm | 8.7KA |
| Flow of cooling water Q | 2L/min |
| Insulation class | F |
| Protective grade | II |
| Weight | 45KG |
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20KVA-3.8V-5 Welding Transformer
| Power source(U1) | 380V |
| Secondary unload voltage(U20) | 3.8V |
| Duty cycle | 20% |
| Power at 10% duty cycle(S10) | 35KVA |
| Power at 20% duty cycle(S20) | 20KVA |
| Power at 100% duty cycle(SP) | 9KVA |
| 100% load current output(IP) | 2400A |
| Maximum short-circuit current for circuits with 500（L）* 300（H）mm | 13.3KA |
| Maximum short-circuit current for circuits with 1000（L）* 300（H）mm | 8.7KA |
| Flow of cooling water Q | 2L/min |
| Insulation class | F |
| Protective grade | II |
| Weight | 45KG |
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20KVA-3V/3.4V-5 Welding Transformer
| Power source(U1) | 380V |
| Secondary unload voltage(U20) | 3.8V |
| Duty cycle | 50% |
| Power at 20% duty cycle(S10) | 31KVA |
| Power at 50% duty cycle(S20) | 20KVA |
| Power at 100% duty cycle(SP) | 14KVA |
| 100% load current output(IP) | 3800A |
| Maximum short-circuit current for circuits with 500（L）* 300（H）mm | 13.3KA |
| Maximum short-circuit current for circuits with 1000（L）* 300（H）mm | 8.7KA |
| Flow of cooling water Q | 3L/min |
| Insulation class | F |
| Protective grade | II |
| Weight | 60KG |
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35KVA-5.2V-2 Welding Transformer
| Power source(U1) | 380V |
| Secondary unload voltage(U20) | 5.2V |
| Duty cycle | 20% |
| Power at 10% duty cycle(S10) | 52KVA |
| Power at 20% duty cycle(S20) | 35KVA |
| Power at 100% duty cycle(SP) | 16KVA |
| 100% load current output(IP) | 3000A |
| Maximum short-circuit current for circuits with 500（L）* 300（H）mm | 17.4KA |
| Maximum short-circuit current for circuits with 1000（L）* 300（H）mm | 11.4KA |
| Flow of cooling water Q | 3L/min |
| Insulation class | F |
| Protective grade | II |
| Weight | 65KG |
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35KVA-5.2V-5 Welding Transformer
| Power source(U1) | 380V |
| Secondary unload voltage(U20) | 5.2V |
| Duty cycle | 50% |
| Power at 20% duty cycle(S10) | 55KVA |
| Power at 50% duty cycle(S20) | 35KVA |
| Power at 100% duty cycle(SP) | 25KVA |
| 100% load current output(IP) | 4800A |
| Maximum short-circuit current for circuits with 500（L）* 300（H）mm | 17.4KA |
| Maximum short-circuit current for circuits with 1000（L）* 300（H）mm | 11.4KA |
| Flow of cooling water Q | 3L/min |
| Insulation class | F |
| Protective grade | II |
| Weight | 75KG |
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35KVA-4.2V/4.7V-5 Welding Transformer
| Power source voltage (U1) | 380V |
| Secondary no-load voltage (U20) | 4.2V/4.7V |
| Power at 20% duty cycle (S10) | 55KVA |
| Power at 50% duty cycle (S20) | 35KVA |
| Power at 100% duty cycle (SP) | 25KVA |
| 100% load output current (IP) | 5900A |
| Cooling fluid flow rate Q | 4L/min |
| Insulation class | F |
| Protection grade | Class II |
| Weight | 80KG |
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35KVA-10.4V-2 Welding Transformer
| Power source voltage (U1) | 380V |
| Secondary no-load voltage (U20) | 10.4V |
| Power at 10% duty cycle (S10) | 51KVA |
| Power at 20% duty cycle (S20) | 35KVA |
| Power at 100% duty cycle (SP) | 16KVA |
| 100% load output current (IP) | 1500A |
| Maximum short-circuit current for 500mm(L) × 300mm(H) circuit | 9KA |
| Maximum short-circuit current for 1000mm(L) × 300mm(H) circuit | 6KA |
| Cooling fluid flow rate Q | 3L/min |
| Insulation class | F |
| Protection grade | Class II |
| Weight | 65KG |
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63KVA-7.2V-2 Welding Transformer
| Power source(U1) | 380V |
| Secondary unload voltage(U20) | 7.2V |
| Duty cycle | 20% |
| Power at 10% duty cycle(S10) | 100KVA |
| Power at 20% duty cycle(S20) | 63KVA |
| Power at 100% duty cycle(SP) | 28KVA |
| 100% load current output(IP) | 3900A |
| Maximum short-circuit current for circuits with 500（L）* 300（H）mm | 23.5KA |
| Maximum short-circuit current for circuits with 1000（L）* 300（H）mm | 15.6KA |
| Flow of cooling water Q | 3L/min |
| Insulation class | F |
| Protective grade | II |
| Weight | 95KG |
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63KVA-7.2V-5 Welding Transformer
| Power source(U1) | 380V |
| Secondary unload voltage(U20) | 7.2V |
| Duty cycle | 50% |
| Power at 20% duty cycle(S10) | 100KVA |
| Power at 50% duty cycle(S20) | 63KVA |
| Power at 100% duty cycle(SP) | 28KVA |
| 100% load current output(IP) | 3900A |
| Maximum short-circuit current for circuits with 500（L）* 300（H）mm | 23.5KA |
| Maximum short-circuit current for circuits with 1000（L）* 300（H）mm | 15.6KA |
| Flow of cooling water Q | 4L/min |
| Insulation class | F |
| Protective grade | II |
| Weight | 110KG |
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63KVA-4.2V/4.7/5.4V-5 Welding Transformer
| Power source voltage (U1) | 380V |
| Secondary no-load voltage (U20) | 4.2V/4.7V/5.4V |
| Power at 20% duty cycle (S10) | 100KVA |
| Power at 50% duty cycle (S20) | 63KVA |
| Power at 100% duty cycle (SP) | 45KVA |
| 100% load output current (IP) | 10600A |
| Cooling fluid flow rate Q | 5L/min |
| Insulation class | F |
| Protection grade | Class II |
| Weight | 120KG |
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63KVA-14.4V-2 Welding Transformer
| Power source voltage (U1) | 380V |
| Secondary no-load voltage (U20) | 14.4V |
| Power at 10% duty cycle (S10) | 100KVA |
| Power at 20% duty cycle (S20) | 63KVA |
| Power at 100% duty cycle (SP) | 28KVA |
| 100% load output current (IP) | 1900A |
| Maximum short-circuit current for 500mm(L) × 300mm(H) circuit | 11.8KA |
| Maximum short-circuit current for 1000mm(L) × 300mm(H) circuit | 7.8KA |
| Cooling fluid flow rate Q | 3L/min |
| Insulation class | F |
| Protection grade | Class II |
| Weight | 95KG |
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100KVA-8.5V-2 Welding Transformer
| Power source(U1) | 380V |
| Secondary unload voltage(U20) | 8.5V |
| Duty cycle | 20% |
| Power at 10% duty cycle(S10) | 150KVA |
| Power at 20% duty cycle(S20) | 100KVA |
| Power at 100% duty cycle(SP) | 45KVA |
| 100% load current output(IP) | 5300A |
| Maximum short-circuit current for circuits with 500（L）* 300（H）mm | 30KA |
| Maximum short-circuit current for circuits with 1000（L）* 300（H）mm | 20KA |
| Flow of cooling water Q | 4L/min |
| Insulation class | F |
| Protective grade | II |
| Weight | 125KG |
Welding transformers are essential components of welding equipment, converting high-voltage, low-current power into low-voltage, high-current output suitable for various welding applications. Different types of welding transformers provide specific current waveforms, welding efficiency, and thermal control capabilities to meet diverse industrial needs. They are widely used in steel structure fabrication, automotive manufacturing, electronics assembly, and battery production. High-performance welding transformers ensure consistent weld quality, extend equipment lifespan, and improve overall production efficiency.
About Us
Yongkang Jiaxiao Welding Automation Equipment Co., Ltd.
Since its establishment 30 years ago, Yongkang Jiaxiao Welding Automation Equipment Co., Ltd. has specialized in the research, development, manufacturing, sales, and service of resistance welding machines, specialized welding machines, automatic welding machines, and automated stamping equipment for materials such as copper, aluminum, iron, and stainless steel. The company boasts a dedicated R&D team led by experts and comprised of diverse engineers. Its products have passed both the Chinese 3C and European CE certifications, and the company holds dozens of national patents. The company is a leading domestic manufacturer of resistance and automatic welding machines.
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