WIN-VC Frequency converter 1.Closed-loop vector control 2.Voltage : 220V,380V,660V 3. 0.75~ ... is v/f control) WIN-VC frequency converter with Closed-loop vector control Power rangeVoltage : 220V,380V,660V Single-unit power ... be output at zero speed in the mode of closed-loop of vector control. Range of speed control reaches to 1 ...