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

7.5 hp (5.5kW) VFD with wholesale price, 3 phase 208V/380V/480V 50Hz/60Hz for option, heavy duty variable frequency drive, 14 amps, manufacturer direct sale.
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Delivery date: 6 - 12 days

7.5 hp heavy duty variable frequency drive, three phase 50Hz/60Hz 208V /380V /480V ±15%.


Basics Model GK3000-4T0055G
Capacity 7.5 hp (5.5 kW)
Shipping weight 6.5 kg
Dimension 280*181*183 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: Can I install VFD to an extra enclosure?
In some cases it is feasible to apply containerized solutions for VFD systems, the generation of heat loss and transportation/exchange of heat has to verified with the changes in the ambient temperature and humidity of the environment. This is comparable to the marine applications where VFD panels end up in compartments below deck.

In most cases VFDs are installed in a controlled environment as you have to avoid dirt/dust and moisture. Ambient heat is mostly countered by considering it with the dimensioning of the VFD rating.

We installed the VFD input and output filters and other associated hardware in an IP55 sealed walk in skid enclosure. We then added an external industrial air conditioner on one end with stainless steel tubes to cool the internal heat and heat caused by the sun loading and high ambient temperatures.

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PDF: GK3000 VFD User Manual
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