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    7.5 hp VFD, 1-Phase 220V to 3-Phase 380V VFD

    5 out of 5 based on 5 reviews | Write a review
    Customizable 7.5 hp (5.5 kW) single phase VFD, single phase 220V to three phase 380V variable frequency drive for AC motor speed control. Features 13 amps, RS485 communication interface, IP20 enclosure rating.
    SKU: GK3000-CS0055G
    30-day Returns
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    Delivery date: 6-12 days

    Cheap 7.5 hp single phase VFD, converts 1 phase 220-240v 50Hz/60Hz input to 3 phase 380v/ 400v/ 415v output, running three phase motor on single phase household power supply.


    Basics Model GK3000-CS0055G
    Capacity 7.5 hp (5.5 kW)
    Shipping weight 8 kg
    Dimension 330*200*200 mm
    Installation size 316*188 mm
    I/O Feature Rated current 13 A
    Input voltage 1 phase 220~240V AC
    Input frequency 50Hz/ 60Hz
    Output voltage (Optional) 3 phase AC 380V/ 400V/ 415V/ 440V/ 460V (Note: 440V, 460V output voltage only for the 1-phase 240V input VFD)
    Output frequency 0Hz~1000Hz
    Over load capacity 150% of rated current for 1 minute, 180% of rated current for 3 seconds
    Control Feature Control mode V/F control;
    Sensorless vector control;
    Communication RS485
    Speed regulation 1:100
    Start torque 150% of rating torque at 1 Hz
    Speed control accuracy ≤±0.5% of rating synchronous speed
    Frequency precision Digital setting: max frequency x± 0.01%;
    Analog setting: max frequency x± 0.2%
    Frequency resolution Analog setting: 0.1% of max frequency;
    Digital setting: 0.01Hz
    Torque boost Automatic torque boost, manual torque boost 0.1%~30.0%
    Interior PID controller Be convenient to make closed-loop system
    Automatic energy save running Optimize V/F curve automatically based on the load to realize power save running
    Automatic voltage regulation (AVR) Can keep constant output voltage when power source voltage varies.
    Automatic current limiting Limit running current automatically to avoid frequent over-current which will cause trip
    Environment Enclosure rating IP 20
    Temperature –10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
    Humidity 5%-95%, without condensation
    Altitude ≤1000m; VFD will be derated if above 1000m
    Impingement and oscillation Normal running:<5.9m/s2 (0.6g); Transportation:<15m/s2 (1.5g)
    Store environment –20℃~ +60℃; no dust, no corrosive gas, no direct sunlight

    Tips: Variable frequency drive installation environment

    • Electrical use conditions:

    To prevent electromagnetic wave interference. VFD (Frequency inverter) in the work due to rectification and frequency conversion, around a lot of interference electromagnetic waves, these high-frequency electromagnetic waves on the nearby instruments, instruments have a certain interference. Therefore, the cabinet instrumentation and electronic systems, should be selected metal shell, shielding the VFD to the instrumentation interference. All components should be reliably grounded, in addition to the electrical components, instruments and instruments between the connection should be selected shielded control cable, and the shielding layer should be grounded. If electromagnetic interference is not handled well, it will often make the whole system unable to work and lead to control unit malfunction or damage.

    • Ambient temperature:

    The ambient temperature of the variable frequency drive refers to the temperature near the cross section of the VFD. Since the VFD is mainly composed of high-power electronic equipment that is highly susceptible to temperature, the life and reliability of the VFD depends largely on the temperature, which is generally -10℃ to +40℃. In addition, need to consider the VFD's own heat dissipation and the possible extremes of the surrounding environment, for the temperature generally requires a certain amount of margin.

    This video is about how to use buttons to run single-phase VFD of three-phase motors.

    The video shows the parameter setting methods for the V/F control mode and vector control mode of single-phase to three-phase VFD.

    This video provides insights into the wiring process for converting single-phase to three-phase VFD, specifically from 220V to 380V.

    Existing reviews of 7.5 hp VFD, 1-Phase 220V to 3-Phase 380V VFD
    7.5 hp VFD
    Is this VFD able to power a PMSM spindle with an encoder up to 800Hz?  There will be about 20' of cable between the spindle and the VFD when mounted to the gantry on my cnc. Thank you.
    From: calebs | Date: 28/11/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    We need to confirm that this spindle motor has an encoder? Because if the motor has an encoder, it is not recommended to use our VFD. The capacity of the motor is 7.5HP (5.5KW), so if the motor does not contain an encoder, we recommend using a capacity of 10HP. SKU: GK3000-CS0075G.
    How do I run the VFD with no load?
    I recently purchased a 7.5 hp VFD from ATO website. But now I have a question that I would like to ask you to help me answer. How do I run the VFD with no load?
    From: Sactor | Date: 11/08/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    You can try to connect only the power supply of the VFD, Not the output terminal of the VFD.
    Can you please send me a simple way to get to the control function?
    I received this item. Can you please send me a simple way to get to the control function so I can access how to increase the speed of the motor. Just a simple procedure as to where to navigate in the menu so I can increase the speed of the motor.
    From: Beahn | Date: 02/03/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Please refer to our video and quick setup manual.
    Please feel free to let us know if you have any further questions.
    How to use VFD?
    I need to power a single larger power load. Can I parallel these VFD's in order to do that?
    From: Hender | Date: 29/09/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    No, you can not parallel these VFD's.
    And it's just one drive for one motor. Also, we have wide ranges of 1-phase VFDs capacities.
    Frequency of the vfd
    What is the Min & Max Frequency Rage for your frequency drives?
    From: Ledera | Date: 05/05/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    VFD input frequency: 50Hz/ 60Hz.
    VFD output frequency (Min & Max Frequency Rage for the subjected): 0.00~400.00Hz.
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