... mode: Sensorless vector control, vector control, torque control, V/F control.3.Start-up torque: 0Hz/180% (VC),0 ... optional extension card.8.Explosion-proof design is alternative.9.ac drivesApplication1.Mine working machines: Belt Conveyor, scraper conveyor, ... 2.Oilfield Machinery: Oilfield Machinery, Electrical submersible pump, etc. ac drives, CHV series medium voltage (690/1140V) high performance ...