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75 hp (55 kW) VFD, 3 Phase 230V, 440V, 480V

5 out of 5 based on 2 reviews | Write a review

$2,591.20

75 hp (55 kW) VFD with low cost, three phase 230V, 440V, 480V variable frequency drive with good performance, RS485 available, V/F & vector control, brand new direct sale by manufacturer.

Input Voltage (Three Phase) ±15%

SKU: GK3000-4T0550G

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Delivery date: 6-12 days

75 hp (55 kW) heavy duty variable frequency drive for energy savings, three phase 230V, 440V, 480V for choice.

Specification:

Basics	Model	GK3000-4T0550G/ GK3000-2T0550G
	Capacity	75 hp (55 kW)
	Shipping weight	31 kg
	Dimension	555310260 mm for GK3000-4T0550G/ 650400300 for GK3000-2T0550G
I/O Feature	Rated current	110A at 380V ~ 480V, 210A at 220V ~ 240V
	Input voltage	3 phase 230V /440V /480V AC ±15% (Optional)
	Input frequency	50Hz/ 60Hz
	Output voltage	3 phase AC 0~input voltage
	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

Note: ATO VFD Cannot be used as a power source, it Can only be directly connected to an induction motor to control the motor speed.

Tips: Variable Frequency Drive Overload
Overload is also one of the frequent failures of VFD. When meet with the problem, we should first analyze if the motor overloads or VFD itself overloads. Generally speaking, the motor has high overload capacity, as long as the VFD parameter is set properly, it will not appear motor overload. But the VFD overload capacity is relatively not high. It is easy to appear overload alarm. We can detect the VFD output voltage, output current, and detect circuit and other trouble points one by one for trouble shooting.
For example, a 75hp VFD often displays "OL" when running.
Analysis and maintenance: According to the response from customer, this VFD was originally used in the 50hp motor, but now it is used for 75hp motor without resetting any parameters, so the problem may be out on the parameters. After checking, set VFD limit current as 75hp motor rated current instead of 50hp, and finally the problem is solved.

How to Measure Circuits with a Digital Multimeter?

This video will show you how to measure electrical circuit using a digital multimeter.

VFD Two-Wire Control Wiring with Push Button for Forward Motor

In this video we've guided you through how to do VFD control wiring with a self-lock push button switch to run the motor in forward direction. We've covered everything from wiring to programming and even a test run. So just watch it through and hope you'll find it informative and helpful.

4-20mA speed Control on VFD

4-20mA is as common in analog control systems as 0~10V, and ATO GK3000 series VFDs are also perfectly compatible.

How to Control VFD with 0-10V (CI port)

This is port CI usage method for 0~10V to control the frequency of ATO GK3000 upgrade version. It is suitable for 1-phase, 1-phase to 3-phase, and 3-phase VFD.

VFD Analog Input 0-10V Frequency Control (VI Port)

ATO GK3000 VFD uses external voltage analog to control the frequency so as to achieve the purpose of motor speed regulation.

Control VFD with Potentiometer & Button (VI Port)

ATO GK3000 vector VFD supports control of synchronous motors, and supports external potentiometer and button control.

Forward and Reverse VFD Button Control

This video is for ATO GK3000 upgrade version VFD 1-phase to 3-phase & 3-phase VFD (3-wire control/external terminal control mode).

Existing reviews of 75 hp (55 kW) VFD, 3 Phase 230V, 440V, 480V

The VFD won’t turn on now

There was a loud pop in VFD (please note that VFD was On, but the Motor was not triggered to run) and it flew the front cover out. I managed to put back the cover, but VFD won’t turn on now. Please advise on what I should do next step forward.

From: Levis | Date: 27/11/2023

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

ATO Responded

Please remove the front cover of the VFD, then check where the internal circuit board is damaged. Also, is there any abnormality in the three-phase 480V input voltage of the VFD?

Do you provide 25hp three phase 600V VFD?

Do you have a 25hp three phase 600V VFD?

From: Andrius | Date: 20/05/2021

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

ATO Responded

Yes, we have. Just the price will be higher than regular 480V input voltage option.

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