2.2 kW Frequency Inverter, 3 Phase 208V, 380V, 480V

$280.48

| 9 review(s) | Add your review

2.2 kW 3-phase inverter, variable frequency inverter 208V, 380V, 480V. Equipped with an IP20 enclosure rating, the 3-phase VFD inverter offers strong impact resistance and high safety performance. With RS485 communication, the PID controller of the frequency drive inverter makes it convenient to make a closed-loop system. Easy to install and use.

Free shipping

Delivery date: 3-10 days

SKU: GK3000-4T0022G

Input Voltage (Three Phase) ±15% *

increase decrease

Overview
Specs
FAQ
Reviews

Overview

The product is a 2.2kW (3 hp) three-phase variable frequency drive supporting input voltages of 208V, 220V, 240V, 380V, and 480V — making it compatible with both North American and international three-phase power systems.

Rated at 5.1A (380V–480V) or 9A (220V–240V) output current, the drive provides 150% overload capacity for 60 seconds, suitable for constant-torque loads including pumps, compressors, conveyors, lathes, grinders, and HVAC fans. Start torque reaches 150% of rated at 1 Hz, enabling reliable starting under load.

Control modes include V/F control for general applications and sensorless vector control (SVC) for tighter speed regulation (±0.5% accuracy, 1:100 speed range). Built-in PID eliminates the need for a separate controller in closed-loop applications such as pressure or flow control. RS-485 Modbus RTU is standard for PLC and SCADA integration.

Features

Multi-Voltage Input (208V–480V): Accepts three-phase input at 208V, 220V, 240V, 380V, or 480V (±15%), covering both North American and international industrial supply voltages in a single drive model.
Sensorless Vector Control: Delivers ±0.5% speed accuracy and 150% starting torque at 1 Hz without an encoder, suitable for demanding constant-torque loads such as compressors and lathes.
Built-in PID & Energy Optimization: The integrated PID controller supports closed-loop pressure, flow, and temperature control. Automatic energy-saving mode optimizes the V/F curve based on actual load, reducing unnecessary power consumption.
RS-485 Modbus RTU Communication: A standard RS-485 interface with the Modbus RTU protocol enables integration with PLCs, SCADA systems, and HMI panels without additional communication modules.
Thermal Management & IP20 Protection: Built-in cooling fan and heat sink maintain stable internal temperature. IP20 enclosure protects against solid objects and is rated for standard indoor panel installation.

Details

Multiple Function Keyboard

The keypad provides direct control of start, stop, forward/reverse, and jog functions, as well as parameter programming. Frequency and other operating values can be monitored and adjusted without connecting to an external device, making on-site commissioning straightforward.

Electronic Screen

The LED display of this variable frequency inverter shows real-time output frequency, voltage, current, and running status. Fault codes are displayed immediately on alarm, with up to 30 fault types recorded in the fault history log for diagnostic reference.

Rugged Casing

The IP20-rated enclosure protects solid objects and is built to withstand the vibration levels typical of industrial panel installations (rated to 5.9 m/s² in operation, 15 m/s² during transport). The compact footprint (230×118×153 mm) fits standard DIN rail enclosures.

Use Cases

Pump & Water Systems: The built-in PID controller allows the VFD to directly regulate pump speed based on pressure sensor feedback, maintaining constant system pressure while eliminating the energy waste of throttling valves.
Machine Tools (Lathes, Grinders, Mills): User reviews confirm reliable performance driving 2kW+ lathes and bench grinders. Sensorless vector control maintains stable torque at low speeds for precise cutting feed rates.
Air Compressors: 150% overload capacity for 60 seconds handles compressor startup loads. Variable speed operation matches air output to actual demand, cutting energy use compared to fixed-speed compressors.
HVAC Fans & Ventilation: Automatic energy-saving mode and adjustable acceleration ramp make this drive well-suited for fan applications where load varies with airflow demand.

Applications

Car Manufacturer

Ship Operation

Energy Generation

Building Construction

Specs

Basics	Model	GK3000-4T0022G/GK3000-2T0022G
	Capacity	2.2 kW (3 hp)
	Shipping weight	3 kg
	Dimension	230118153 mm
I/O Feature	Rated current	5.1A at 380V ~ 480V, 9A at 220V ~ 240V
	Input voltage	3 phase 220V /380V /480V AC ±15% (Optional)
	Input frequency	50Hz/ 60Hz
	Output voltage	3 phase AC 0~input voltage
	Output frequency	0~1000Hz
	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

FAQ

Q1: How to wire a 3-phase VFD?

Preparation: Before starting the connection, prepare the necessary tools and materials, such as screwdrivers, insulating tape, terminal blocks, etc. At the same time, make sure that the 3-phase VFD inverter and motor are in a power-off state to ensure safety.
Grounding wire wiring: First, make sure that the grounding wire is connected correctly. Connect the metal casing of the 3-phase variable frequency drive and motor to the grounding terminal through the grounding wire to ensure the safe operation of the equipment.
Main power wiring: Next, connect the main power supply. Generally, the three-phase inverter has three-phase input terminals L1, L2, and L3. The corresponding wires of the main power supply need to be connected to these three terminals respectively. Be careful to ensure that the terminal blocks are firmly fastened and not loose.
Motor wiring: Finally, connect the motor wiring. The motor also has corresponding three-phase power input terminals. The U, V, and W terminals of the three-phase frequency inverter need to be connected to the corresponding terminals of the motor, respectively, to ensure that the connection is correct.
Cable fixing: After completing the wiring, fix the cable with insulating tape or wire tie to prevent loosening or short circuits to ensure the safe operation of the equipment.

Q2: Which input voltage option should I choose for a US 480V three-phase supply?

Select the 480V option at checkout. The GK3000-4T0022G (480V variant) accepts 480V ±15% three-phase input and is the correct choice for standard North American industrial 480V service. The 380V variant is for international installations; the 208V/220V/240V options are for lower-voltage three-phase supplies.

Q3: What is the difference between V/F control and sensorless vector control on this drive?

V/F control maintains a fixed ratio between output voltage and frequency — simple and stable for most fan and pump applications. Sensorless vector control (SVC) uses motor model algorithms to regulate flux and torque independently, providing better low-speed torque (150% at 1 Hz) and tighter speed accuracy (±0.5%) for constant-torque loads like lathes, conveyors, and compressors. SVC requires entering the motor's nameplate data during setup.

Q4: Can this VFD be integrated with a PLC via Modbus?

Yes. The RS-485 port supports Modbus RTU protocol, allowing a PLC or SCADA system to read and write drive parameters, control start/stop/speed, and monitor fault status remotely.

Write your own review

Review title: *

Review text: *

Rating:

1 2 3 4 5

Existing reviews

Smooth-running 2.2kW frequency inverter

The 2.2kW frequency inverter works smoothly and handles variable speeds well. The RS485 communication and PID control make it great for automation. If you're unfamiliar with VF drives, the initial setup might take some time to figure out. But the after-sales staff will be eager to help.

From: Marico Sawyer | Date: 4/1/2025 7:18 PM