The is a single-phase 220 V voltage input frequency converter to drives a three-phase motor (be sure to convert the connection method into a t-riangle type).Four-digit digital tube display, you can see the data clearly.Support display radiator temperature value, current current value, direct current master voltage value, motor speed, operating frequency value.Output 1.0-99.0Hz, in order to improve the output voltage, this product uses SVPWM modulation mode, carrier-frequency 8.0KHz.The frequency converter can arbitrarily change the V/F curve by setting the V/F compensation frequency and the voltage ratio at the frequency.By setting the maximum value of V/F curve, according to the load situation, to maximize the use efficiency of electric energy, reduce the heat of the motor, prolong the servicelife of the motor and frequency converter.Low frequency high torque, 220 V single-phase input, 220 V three-phase output, energy saving and electricity saving.Overheating and over-voltage protections.Specifications:Name: Frequency ConverterPower: AC220V +/- 20%Input speed: 3000rpmOutput speed: 0-3000rpmSpeed adjustable-range: 0-1800rpmRated power: 0.75KWTemperature: -10 to 55Humidity: 0-65%Item size: 143 x 100 x 61mm / 5.63 x 3.94 x 2.40inItem weight: 362g / 12.77ounce / 0.80lbColour: blackMaterial: ABS + electronic componentsPackage Contents:1 x Frequency Converter1 x English manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.