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1. Advanced IGBT inverter technology, frequency is to 100KHZ, high working efficiency, reduced size and weight, easy to carry.
2. Simple structure, good process, reliable and durable, easy for maintenance.
3. HF pressure increasing arc initiation pulsation thermal arc initiation design, excellent arc initiation performance.
4. Unique over pressure protection design, voltage to 380V will not damage the machine.
5. Double purposes. Suitable for TIG and MMA of various metals.
6. Unique output characteristics protection design, more suitable for filler wire welding and the welding point is not black, excellent weld appearance.
7. Minimum welding current is to 5-8A, stable arc suitable for stainless steel plate welding.
8. MMA IS easy arc initiation, stable current and has no noise.
9. Fast, small splash, do not stick to slip, excellent weld appearance.
10. Wide working voltage range, strong adaptability to electricity network, high duty cycle
10. Complete accessories: Welding torch, welding cable, earth clamp, welding holder, carton box

Specification ZX7-250ST ZX7-315ST ZX7-400ST ZX7-500ST
Rated Input Voltage Three phase 380V Three phase 380V Three phase 380V Three phase 380V
Rated Input Capacity 30KVA 13KVA 16. 8KVA 18KVA
Range of Output Current 10-250A(DC TIG) 10-350A(DC TIG) 20-400A(DC TIG) 20-500A(DC TIG)
10-180A(DC Manual) 10-220A(DC Manual) 20-315A(DC Manual) 20-350A(DC Manual)
Open Circuit Voltage(V) 55 60 70 80
Rated duty cycle 40% 60% 60% 60%
Inverter Frequency(KHZ) 100 100 100 100
Overall Size(mm) 430x320x205 300× 500× 450 300× 580× 450 300× 580× 450
Weight(kg) 22 25 30 35

The data in the above table is only for reference. Please subject to the nameplate on the device.