7.5 hp (5.5 kW) VFD, 3 Phase 208V, 380V, 480V

$396.20

7.5 hp (5.5 kW) VFD with wholesale price, 3 phase 208V/380V/480V 50Hz/60Hz for option, heavy duty variable frequency drive, 14 amps, strong overload capacity, manufacturer direct sale.

SKU: GK3000-4T0055G

Input Voltage (Three Phase) ±15%

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Delivery date: 6-12 days

Overview
Reviews

7.5 hp heavy duty variable frequency drive, three phase 50Hz/60Hz 208V /380V /480V ±15%, brand new direct sale by manufacturer.

Specification:

Basics	Model	GK3000-4T0055G
	Capacity	7.5 hp (5.5 kW)
	Shipping weight	6.5 kg
	Dimension	280181183 mm
I/O Feature	Rated current	14 A
	Input voltage	3 phase 208V /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 fault static test method
For a faulty VFD, power off the device and test its rectification and inversion part, in most cases the fault can be found this way. Pay attention that VFD cannot be measured immediately after power off, because there are large capacitors store with hundreds of volts of high voltage. The testing only can be launched more than ten minutes later. In order ensure personal safety, the operator must ensure that the machine is off, and the power input lines R/S/T and output lines U/V/W are removed.
Static test method
First turn the multimeter to "diode", and then use the multimeter's red and black pens to detect according to the following steps:

Use black pen to touch the DC bus P (+), and the red pen touch R/S/T in turn, record the displayed values; and then the red pen touch N (-), black pen touch R/S/T, record the displayed values. If the six displayed values are balance, then the VFD diode rectifier or soft start resistance have no problem, otherwise the rectifier module or soft start resistance from the corresponding position is damaged.
Use red pen touch the DC bus P (+), and the black pen touch U/V/W in turn, record the displayed values; and then the black pen touch N (-), red pen touch U/V/W, record the displayed values. If the six displayed values are balance, then the IGBT inverter module has no problem, otherwise the IGBT inverter module of the corresponding location is damaged.

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