The is a single-phase 220 V voltage input frequency converter to drives a three-phase motor (be to convert the connection 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 10-990Hz, in order to improve the output voltage, this product uses SVPWM modulation mode, -frequency 80KHz. 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 Converter : AC220V +/- 20% Input speed: 3000rpm Output speed: 0-3000rpm Speed adjustable-range: 0-1800rpm Rated : 075KW Temperature: -10 to 55 Humidity: 0-65% Item size: 143 x 100 x 61mm / 563 x 394 x 240in Item weight: 362g / 1277ounce / 080lb Colour: black Material: ABS + electronic components Package Contents: 1 x Frequency Converter 1 x English manual Only 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.