30 hp (22kW) VFD, 3 Phase 208V, 440V, 460V

Cheap price 30 hp (22 kW) VFD, three phase 208V, 440V, 460V variable frequency drive with good performance, IP20, RS485 enabled, brand new direct sale by manufacturer.
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Delivery date: 6 - 12 Days

30 hp (22 kW) high performance variable frequency drive, three phase 208V, 440V, 460V for selection.


Basics Model GK3000-4T0220G/ GK3000-2T0220G
Capacity 30 hp (22 kW)
Shipping weight 18 kg
Dimension 423*258*230 mm
I/O Feature Rated current 45A at 380V ~ 480V, 91A at 220V ~ 240V
Input voltage 3 phase 208V /440V /460V 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: What should be knowing about VFD for a fresher?

First you have to understand the process and application for which you were using the variable frequency drive (VFD). Their safety parameters, controls (I/O), rectifier unit, dc circuit, inverter unit, motor protection, motor speed control, resonant frequency, switching frequency, connections, harmonics, surge & power factor. Basic parameters of VFD like voltage amps watts and wiring connection like 2 wire three wire and VFD connections. You must have to know and study about this before going to the practical application.

The loads
1. You must thoroughly understand the driven load; is it constant torque or variable torque (heavy duty or normal duty in Europe).
2. What is the required speed range? It is not 0 - 1800 RPM, it will be something like 30 - 1200 RPM - the load determines that.
3. What is the speed reference?
4. You do not require a special motor. All premium efficient motors are wound with spike resistant wire. Most old motors will work just fine but you may want to add a line reactor. However, there are special induction motors for VFD operation only, which provide increased capabilities.
5. There are many other options available but usually not required. All of those are dictated by the load.

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