7.5 hp VFD, Single Phase to Three Phase VFD

Customize 7.5 hp VFD with single phase input to three phase output, use it as a phase converter for single phase power supply to vary three phase motor speed.
Free shipping
Delivery date: 6 - 12 Days

7.5 hp variable frequency drive, single phase 220v, 230v, 240v to three phase output.


Basics Model GK3000-2S0055G
Capacity 7.5 hp (5.5 kW)
Shipping weight 11 kg
Dimension 339*231*214 mm
I/O Feature Rated current 28 A
Input voltage 1 phase 220V /230V /240V AC
Input frequency 50Hz/60Hz
Output voltage 3 phase AC 0~input voltage
Output frequency 0.00~400.00Hz
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: Summarize some important information of the impact on cable size of a motor
1) Always check the wiring to match the load profile - see motor nameplate data.
2) All motors are not created equal. If the motor is not rated for use with VFD, it is certain to fail quickly and dramatically, either by failure of insulation (and arc to chassis / ground) or by bearing failure due to circulating currents. So if it is not rated for VFD, don't use it with a VFD.
3) All cables are not created equal. VFDs produce voltage spikes in the order of 1600-2000V while artificially generating the desired sine wave that drives the motor. This is 2-4x the rating of most electrical wire insulation. If the wire is not rated for this voltage, it will quickly fail, allowing the voltage to ACR to nearest conductor (or personnel) with dangerous or deadly results.

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Existing reviews

Control panel
Default cable length is 20cm, maximum cable length for the control panel is 100m with additional costs, you can contact us for more information.
By GoHz.com on 10/04, 2019
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Control panel
I am very interested in purchasing a 7.5 HP VFD with a single phase 230V input.  I need a VFD that has the capability to have the control panel remotely mounted in a control cabinet door.  Are your VFDs capable of doing this?   Please let me know as soon as possible, I need a replacement VFD, FAST.  Thank you.
By Greg on 09/04, 2019
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7.5 hp VFD, Single Phase to Three Phase VFD
I purchased this unit to power my 5.5hp submersible well/irrigation pump. It works incredibly well. We had a slight issue that was quickly ans professionally addressed. This was shipped from Hong Kong and was received in 4 days to Oregon. These units are built very well and weigh over twice as much as their competitors. Hugh heat sink and dual cooling fans keep it cool. HIGHLY RECOMENDED!
By Rod on 06/09, 2018
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1-phase to 3-phase 5.5kw drive
It's free shipping to Seychelles islands.
By GoHz.com on 04/05, 2018
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1-phase to 3-phase 5.5kw drive
I'm looking for 1-phase to 3-phase 5.5 kw drive. I see you have it available. Can you send me a quote with shipping to Seychelles islands?
By Wardi on 04/05, 2018
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GoHz 7.5hp VFD
The capacity of VFD is matching with the motor, it's common to use VFD for pump motor, does not need higher capacity.
The model# GK3000-2S0055G will take single phase 230v to three phase, to power your pump motors.
By GoHz on 04/09, 2017
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GoHz 7.5hp VFD
I have (2) 7.5hp 3 phase230 volt pump motors to run, power on site is only 230 single phase. Will your GK3000-2S0055G drive run 1 of the 7.5 hp motor? I was told when you get above 3 hp you need to double the size of your drive, is this true?
By Greg on 04/09, 2017
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Customized single phase VFD
No need to derate, this 7.5hp single phase input  VFD is customized from three phase input VFD, GoHz can even customize higher capacity VFDs, i.e. 10hp, 20hp...
By GoHz.com on 04/07, 2017
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Interested in your 7.5hp VF Drives
I noticed your single phase input models go up to 7.5hp. so I looked up the model numbers in the user manual and according to the user manual they are manufactured for 3 phase input. So i am just wondering if that is a mistake because i am looking for a 7.5hp with single phase input but if it was designed for three phase then i will have to derate.
By Colin on 04/07, 2017
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