2 hp (1.5 kW) VFD, 3 Phase 240V, 415V, 480V

$218.41

Cheap price 2 hp (1.5 kW) VFD, three phase 240V, 415V, 480V for choice, brand new sensorless vector variable frequency drive, RS485 enabled, strong overload capacity, manufacturer direct sale.

SKU: GK3000-4T0015G

Input Voltage (Three Phase) ±15%

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Delivery date: 6-20 days

Overview

2 hp variable frequency drive, three phase 240V, 415V, 480V for choice.

Specification:

Basics	Model	GK3000-4T0015G
	Capacity	2 hp (1.5 kW)
	Shipping weight	2 kg
	Dimension	18498135 mm
I/O Feature	Rated current	4 A
	Input voltage	3 phase 240V /415V /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 harmonic wave problems and solutions
The devices that have switch effect in VFD main circuit will produce harmonics wave in the process of on-off circuit. The lower harmonics usually have large effect on the motor load, causing the torque ripple. And the higher harmonics increase the leakage current of the VFD output cable, causing low output. Harmonic wave interference can also lead to misoperation of the relay protection device, so that the electrical instrument measurement is not accurate, or even cannot work properly.
The treatment of harmonic wave problems is to cut off the interference route transmission and suppress high harmonic wave of interference source.
The methods of cutting off the interference route transmission:

Cut off the approach of common ground wire propagation interference. The ground connection of the power line and the ground connection of the control line should be separated, that is connecting the grounding terminal of the drive device to the earth wire, and the grounding terminal of the control device to its metal shell.
Set the signal line away from the interference source power wire. Wiring separation is effective in eliminating this interference, that is, to separate the high-voltage cables, power cables, control cables, instrument cables and computer cables wiring.

The methods to suppress higher harmonic wave on the interference source:

Increase the internal impedance of the VFD power supply. Usually the internal impedance of the power supply device has the function of buffering the reactive power of the DC filter capacitor. The larger the internal impedance, the fewer the harmonic wave content. The internal impedance is the short circuit impedance of the transformer. Therefore, when choosing variable frequency drive power supply, the best choice is large short circuit impedance ones.
Install the filter. In the front of VFD, install the LC-type passive filter can filter out 5 and 7 times of high harmonic wave.
Install the reactor. Install the line reactor in the front of VFD to suppress the overvoltage on the power supply.
Set the active filter. Active filtering can automatically generate a current that has the same amplitude and the opposite phase of the harmonic current, so that can effectively absorb the harmonic wave current.

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