3.7 kW Single Phase to Three Phase Frequency Inverter

$294.31

| 7 review(s) | Add your review

3.7kw variable frequency inverter for sale, converting single phase to three phase, apply for motors, pumps, washing machines, refrigerators, fans, and so on. Come with RS485 communication mode and IP20 enclosure protection, single phase to 3 phase inverter works at (–10℃, 40℃). The shell is hard and can protect the internal components of the inverter.

Free shipping

Delivery date: 3-10 days

SKU: GK3000-2S0037

increase decrease

Overview
Specs
FAQ
Reviews

Overview

3.7kw inverter single phase to three phase with IP20 enclosure, can work at (–10℃, 40℃). PID controller is installed inside, convenient for making closed-loop system. Humidity 5%-95%, without condensation and speed regulation reaches 1:100. With adjustable output frequency, it can be adjusted according to different equipment needs to meet different frequency requirements of the equipment.

Feature

The inverter input voltage is 1 phase 220V AC ±15%, and output voltage is 3 phase AC 0~input voltage.
Come with RS485 communication and enclosure rating IP 20, variable frequency drive single phase to 3 phase has overvoltage protection overload protection, over current protection, etc. Good safety performance and easy to use.
Equipped with a cooling fan, the frequency drive inverter can work at (–10℃, 40℃), and automatic voltage regulation (AVR) keeps constant output voltage when power source voltage varies.

Details

Digital Display

The electronic screen of the 3.7 kw frequency drive inverter displays clear fonts. The digital inverter indicators of the inverter single phase to three phase will display the corresponding inverter operating conditions. It can monitor real-time inverter data changes, and improve safety performance.

Multi-function Button

Equipped with multi-function keys, the 5hp inverter 1 phase to 3 phase has menu/exit, up/down keys, forward and stop/reset. The functional key of the single phase to 3 phase inverter is very convenient to adjust the 3.7kw inverters' parameters and operating status at any time.

Cooling Fan

The intelligent cooling fan installed in the 5hp inverter single phase to three phase introduces cooling air into the frequency inverter. It can reduce the inverter component temperature, protect the devices from damage, and prolong variable frequency inverter's service life.

Applications

Medical Equipment

Solar Power Generation

Electric Vehicle Charging

Office Equipment

Specs

Basics	Model	GK3000-2S0037
	Capacity	3.7 kW (5 hp)
	Shipping weight	4 kg
	Dimension	230118153 mm
I/O Feature	Rated current	17 A
	Input voltage	1 phase 220V AC ±15%
	Input frequency	50Hz/ 60Hz
	Output voltage	3 phase AC 0~input voltage
	Output frequency	0Hz~1000Hz
	Overload capacity	150% of rated current for 1 minute, 180% of rated current for 3 seconds
Control Feature	Control mode	V/F, Sensorless vector control (SVC), Speed sensor vector control (FVC)
	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 a closed-loop system
	Automatic energy save running	Optimize V/F curve automatically based on the load to realize power-saving running
	Automatic voltage regulation (AVR)	It 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

FAQ

How to test a single-phase to three-phase frequency inverter?

Power supply check: Before turning on the power, use a multimeter or voltmeter to check whether the voltage and frequency of the input power supply meet the specifications of the frequency inverter.
Start the frequency inverter: Start the inverter 1 phase to 3 phase correctly according to the operating instructions of the frequency inverter. Observe the display panel of the inverter to ensure that the display is normal and there are no faults or error messages.
Output voltage and frequency test: Use a multimeter or oscilloscope to measure the output voltage and frequency of the inverter. Make sure the output voltage and frequency are consistent with the set values and are stable without fluctuations.
Load test: Connect an appropriate load to the output end of the frequency inverter and observe the operating status of the frequency inverter. Gradually increase the load, check whether the inverter can work stably, and observe whether the output voltage and frequency change.
Functional test: Test various frequency drive inverter functions, such as speed regulation, forward and reverse rotation, protection, etc. Make sure these features are working properly and as expected.
Abnormal test: simulate some abnormal situations, such as input voltage being too high or too low, load short circuit, etc., to check whether the inverter can respond correctly and take corresponding protective measures.

Write your own review

Review title: *

Review text: *

Rating:

1 2 3 4 5

Existing reviews

Good performance for workshop equipment

I bought this 3.7 kW single-phase to three-phase frequency inverter to run a three-phase water pump in my workshop. The installation took a little time because I had to adjust some parameters, but once everything was set up, the motor ran smoothly and much quieter than before. The housing feels solid and durable, and the cooling performance has been reliable even during long operating hours.

From: Hale Birrell | Date: 5/26/2026 12:31 AM

Was this review helpful? Yes No (0/0)

Worth every penny

I bought this 3.7kW inverter to run my old three-phase lathe on a single-phase supply, and it’s been good. The setup was straightforward—I plugged it in, connected via RS-485 to my system, and it powered up smoothly. It also keeps cool even during 8-hour shifts in 35℃ heat.

From: Buck Yerkes | Date: 9/28/2025 7:17 PM

Was this review helpful? Yes No (0/0)

Good performance frequency inverter, but a bit noisy.

This 3.7kW frequency inverter does a solid job converting 1-phase to 3-phase power, and it runs my motor smoothly. The build feels sturdy, and the RS485 communication is a nice feature. However, it does produce some noise when running, which might be a downside for quieter workspaces.

From: Uriah Rhys | Date: 3/13/2025 7:31 PM