... Frequency inverter/converter (AC drives), Soft starter, Braking unit, EMI Filter, Servo drives. 0.75kw-630kw Powtran product ... starter, Braking unit, EMI Filter, Servo drives.0.75kw-630kw inverters with input and output voltage 220V, 380V, 460V, and 690V.(fluctuating ... Industry! Technology come from Germany, Japanese and Qinghua University.Powtran annual output is substantial, about 100000 to 120000 ...