18.5 kW Frequency Inverter, 3 Phase 220V, 400V, 480V

$992.18

| 2 review(s) | Add your review

18.5kw 3 phase inverter for sale, RS485 communication mode, automatic voltage regulation (AVR) can keep constant output voltage when power source voltage varies. Come with an IP20 enclosure rating, a frequency drive inverter that has good impact resistance, and a durable shell. The powerful protection mechanism and versatile application of three-phase inverters make them suitable for various industrial, commercial, and residential purposes.

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Delivery date: 3-10 days

SKU: GK3000-4T0185G

Input Voltage (Three Phase) ±15% *

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Overview
Specs
FAQ
Reviews

Overview

18.5 kW (25 hp) frequency inverter, three phase AC 220V, 400V, 480V, 50Hz/60Hz input, three phase 0-400 Hz output. Equipped with multiple function keyboard, the variable frequency drive can adjust the operating parameters and change the working state in real-time. Compact material and easy operation.

Feature

The three-phase inverter has high frequency accuracy, digital setting: maximum frequency x ± 0.01%; analog setting: maximum frequency x ± 0.2%.
Equipped with RS485 communication mode, the IP 20 enclosure rating, the three phase 240V, 420V, 480V variable frequency inverter shell is sturdy and has excellent impact resistance.
The 3 phase variable frequency drive with V/F control can work at (–10℃, 40℃), and the input frequency reaches 50Hz/60Hz.
Install a multi-function keyboard to facilitate the operation of the working state adjustment of the three-phase inverter.

Details

Multiple Function Keyboard

The multiple-function keyboard of frequency drive inverter controls the operation of the three phase variable frequency drive inverter, such as start, stop, and acceleration. The users can press the corresponding buttons to make the 18.5 kw 3 phase variable frequency drive work according to the set inverter parameters or control the inverter machine's operating speed.

Electronic Screen

The electronic screen of the frequency drive inverter is a key component in the control system, providing users with an intuitive and real-time information display. The electronic screen can monitor the operating status of the 18.5kw variable frequency drive inverter in real-time, including input and output voltage, and current waveform, which helps to detect abnormal conditions in time.

Rugged Casing

The 25hp 3 phase variable frequency drive's rugged casing plays multiple roles in its design. It is not only about protecting the circuits and internal components inside the device but also about the safety, stability, and reliability of the device. The 3 phase variable frequency drive not only protects the internal circuits and components but also provides safety protection.

Applications

Car Manufacturer

Ship Operation

Energy Generation

Building Construction

Specs

Basics	Model	GK3000-4T0185G/ GK3000-2T0185G
	Capacity	18.5 kW (25 hp)
	Shipping weight	18 kg
	Dimension	423258230 mm
I/O Feature	Rated current	37A at 380V ~ 480V, 75A at 220V ~ 240V
	Input voltage	3 phase 240V /420V /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

Why would you need a 3-phase frequency inverter?

A 3-phase inverter is typically used in applications where three-phase power is required or preferred due to its efficiency and performance advantages.

Industrial and commercial applications: Many industrial and commercial facilities use three-phase power for running heavy machinery, motors, and equipment. Three-phase power provides a more balanced and efficient power supply for such high-demand applications.
Higher power requirements: Three-phase systems can handle higher power loads more effectively than single-phase systems. This is beneficial for operations that require substantial power input, such as manufacturing plants, large HVAC systems, and certain types of electrical motors.
Improved efficiency: Three-phase power systems are more efficient in transmitting and using electrical power. They reduce the amount of electrical loss in the system, leading to better overall efficiency and lower operating costs.
Stable and reliable power supply: Three-phase systems provide a more stable and continuous power supply, which is essential for sensitive equipment and applications that cannot afford interruptions or fluctuations in power.
Solar and renewable energy systems: In larger solar PV installations and wind turbine systems, three-phase variable frequency inverters are often used to convert DC power generated by the panels or turbines into three-phase AC power. This can then be used on-site or fed into the grid, taking advantage of the efficiency and stability of three-phase power.
Electric vehicles and charging stations: Some electric vehicle charging stations and certain high-power electric vehicle applications use three-phase frequency drive inverters to provide faster and more efficient charging.

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Existing reviews

A bit heavy for light-duty setups, but good for serious industrial applications.

We installed this 18.5 kW frequency inverter on a production line motor, and it’s been running steady even with fluctuating input power. The RS485 communication makes integration with our control system simple. The shell feels tough and handles the factory environment well.

From: Howar MacArthur | Date: 5/16/2025 1:06 AM

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Good customer service

I start the device and the inverter cannot be used. There are still many problems with the inverter itself, so I raised these questions via email. I received great answers and solutions quickly, and I gave them a thumbs up for their good customer service!

From: David Floren | Date: 12/24/2020 8:40 PM