Affordable 10 hp (7.5 kW) VFD, three phase 220V/440V/480V input for option, three phase output variable frequency drive, 17 amps, manufacturer direct sale.
Delivery date: 6 - 12 days
10 hp variable frequency drive, three phase 220V /440V /480V ±15%.
||10 hp (7.5 kW)
||3 phase 220V /440V /480V AC ±15% (Optional)
||3 phase AC 0~input voltage
|Over load capacity
||150% of rated current for 1 minute, 180% of rated current for 3 seconds
Sensorless vector control;
||150% of rating torque at 1 Hz
|Speed control accuracy
||≤±0.5% of rating synchronous speed
||Digital setting: max frequency x± 0.01%;
Analog setting: max frequency x± 0.2%
||Analog setting: 0.1% of max frequency;
Digital setting: 0.01Hz
||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
||–10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
||5%-95%, without condensation
||≤1000m; VFD will be derated if above 1000m
|Impingement and oscillation
||Normal running:<5.9m/s2 (0.6g); Transportation:<15m/s2 (1.5g)
||–20℃~ +60℃; no dust, no corrosive gas, no direct sunlight
Tips: Small rating VFD will damage if connect it to high rating transformer
If your small rating variable frequency drive (VFD) getting damage then there may be a voltage spikes issue because according to the thumb rule if the transformer KVA rating is 10 times of KVA rating of VFD, say a 100 kVA transformer for 10 hp VFD, then it is subjected to voltage spikes that can damage it. Line reactors are the best way to compensate that but mostly users don't use the reactors for small rating VFDs.
If your VFD is large enough compared to your generator then there can be issues with the semi-conductors on the VFD firing correctly. This was an issue one of VFDs experts always checked when large VFDs needed to be run by a back-up generator.
You may always want to look at the power quality during start-up. Voltage spike will damage the semiconductors on the front end to the VFD. So if you were using the reactors then problem may be different but if you don't then I suggest you to use reactors.
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