75 hp (55 kW) VFD with low cost, three phase 230V, 440V, 480V variable frequency drive with good performance, RS485 available, brand new direct sale by manufacturer.
Free shipping
Delivery date: 6 - 12 days
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$2,959.00
$2,591.20
75 hp (55 kW) heavy duty variable frequency drive for energy savings, three phase 230V, 440V, 480V for selection.
Specification:
| Basics |
Model |
GK3000-4T0550G |
| Capacity |
75 hp (55 kW) |
| Shipping weight |
40 kg |
| Dimension |
560*320*269 mm |
| I/O Feature |
Rated current |
112 A |
| Input voltage |
3 phase 230V /440V /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 vs Soft Starter
Conventional soft starters control AC motor in soft starting by reduced voltage during starting period. But it also causes a significant reduction in starting torque which will prolong acceleration times. Reduction in mechanical stress is achieved at the expense of increase in electrical stresses. Variable frequency drive (VFD) applies V/Hz method for AC motor speed control to make the motor starting from zero speed to required speed “slowly” (can be set as short as 1s according to practical application demand), and maintain a constant torque in the starting period. Therefore, the VFD controls the motor accelerating smoother than soft starter with lesser electrical stresses. This is especially important in the applications where need high starting torques.
