... drives) utilize advanced fiber optic and SVPWM technology to achieve high performance. Technical Features1.Input: 3AC 660V/1140V,50Hz2.Control mode ... , Short-circuit, etc.7.Offer optional extension card.8.Explosion-proof design is alternative.9.ac drivesApplication1.Mine working machines: Belt ... pump, etc. ac drives, CHV series medium voltage (690/1140V) high performance explosion-proof