630kw Variable Frequency Inverter 1.Cabinet machine 2.Voltage: ... automatic multi-stage operation, U(-)SPwn control, pendulum frequency operation, two signals superimposed control, automatic reset, timer ... cumulative, the output power limit, the output frequency, speed conversion, DC bus voltage, output voltage ... 0128/16555/75 SVF-GH Series High Performance Vector 630kw Variable Frequency Inverter