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.
Delivery date: 6 - 12 Days
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$1,589.00
$1,264.30
30 hp (22 kW) high performance variable frequency drive, three phase 208V, 440V, 460V for selection.
Specification:
| Basics |
Model |
GK3000-4T0220G |
| Capacity |
30 hp (22 kW) |
| Shipping weight |
18 kg |
| Dimension |
423*258*230 mm |
| I/O Feature |
Rated current |
45 A |
| 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.
