... is ac motor,60v or 72v,working frequency is 0-200hz,max speed of 6500rpm,using Speed Sensorless Vector Control and SVP ... the motor is ac motor,voltage is 48v ,60v or 72v,working ... -200hz,max speed of 6500rpm,using Speed Sensorless Vector Control and SVPWM (Space Vector Pulse Width Modulation) technology,motor type48V~72V ...