Mining Mma(igbt)

1.Use Mining MMA(IGBT) high power module and full-bridge inverter main circuit structure; the main engine with superior resistance to overloads and with outstanding welding performance.
2.Core control chip is the new-style current pulse width modulator; double loop feedback control; the more excellent static and dynamic characteristics; the smaller current drift.
3.With the arc force adjustment function, and adapt to all grades of welding electrodes.
4.The power factor is 0.98; the power consumption with no-load is less than 100W; it can save above 50% energy more than ordinary welding machines.
5.Short-circuit protection function and the special standby operating circuit; it will not damage the welding machine's life while no-load, and the whole welding machine's life is one time longer than similar products.
6.Suitable for coal mine workings.

Product Type ZX7-400S ZX7-500S
Input Power Source 3P/380V/660V, 50Hz
Rated Input Capacity 14.5KVA 20KVA
Inverting Frequency 20KHz 20KHz
No-load Voltage 75V 75V
Duty Cycle 60% 60%
Current Range 0-400A 0-500A
Electrode Diameter 0.8-5.0mm 0.8-6.0mm
Efficiency 90% 90%
Insulation Class F F
Dimensions 560*280*520mm 560*280*520mm
Weight 28kg 28kg