3 hp (2.2 kW) VFD, Three Phase 220V, 380V, 480V

$259.10

Low cost 3 hp (2.2 kW) VFD, three phase 220V, 380V, 480V variable frequency drive, IP20 enclosure, RS485 enabled, V/F & vector control, brand new direct sale by manufacturer.

SKU: GK3000-4T0022G

Input Voltage (Three Phase) ±15%

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Delivery date: 6-12 days

Overview
Reviews

3 hp 3 phase variable frequency drive, 220V, 380V, 480V for selection.

Specification:

Basics	Model	GK3000-4T0022G
	Capacity	3 hp (2.2 kW)
	Shipping weight	3 kg
	Dimension	230118153 mm
I/O Feature	Rated current	6 A
	Input voltage	3 phase 220V /380V /480V AC ±15% (Optional)
	Input frequency	50Hz/ 60Hz
	Output voltage	3 phase AC 0~input voltage
	Output frequency	0.00~400.00Hz
	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: Variable frequency drive noise and vibration problems and solutions
When using VFD for speed adjusting, it will produce noise and vibration. This is because the VFD output waveform contains high harmonic wave. With the change of the operating frequency, the fundamental component and the harmonic component all change in a large range, which is likely to resonate with the inherent mechanical vibration of the motor, and the resonance is the source of noise and vibration.

When the low harmonic wave components in the output resonate with the inherent mechanical frequency of the rotor, the noise will increases. When the high harmonic wave components in the output are resonated with the iron core, machine enclosure and bearing bracket at the vicinity of the respective natural frequencies, the noise will increases.
The noise generated by the drive motor, especially the harsh noise, is related to the switching frequency of the PWM control, especially in the low frequency region. To solve this problem, usually connect AC reactor on the VFD output side. If there is electromagnetic torque margin, u/f can be set lower to reduce noise.
When the VFD is in operation, the magnetic field caused by the higher harmonic wave in the output waveform generates electromagnetic driving force for many mechanical parts. When the driving force frequency is close or overlap with inherent frequency of these mechanical components, will resonate. The main effect on the vibration is the lower harmonic wave component, which has a greater impact in the PAM mode and square wave PWM mode. But when using SPWM mode, the low harmonic wave component is low, and the impact is also lower.
The method of reducing or eliminating the vibration is to connect the AC reactor to the output side of the VFD to absorb the high harmonic current component. If still using PAM mode or square wave PWM mode VFD, switch to SPWM mode VFD to reduce pulsating torque, weaken or eliminate vibration, and to prevent the mechanical part damage due to vibration.

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