100 hp (75 kW) VFD in low price, three phase 230V, 400V, 460V variable frequency drive for energy savings, strong over-current capacity, brand new direct sale by China manufacturer.
Delivery date: 6 - 12 days
100 hp (75 kW) variable frequency drive for AC motor speed controls, three phase 230V, 400V, 460V for selection.
||100 hp (75 kW)
||3 phase 230V /400V /460V 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: What's the lowest and highest operating frequency/speed of a VFD?
For a universal variable frequency drive (VFD), in general the lowest frequency/speed is zero and the highest frequency will depend upon the driven equipment. The motor for a water pump can run as high as 15000 rpm. Generally in power plants and auxiliaries this speed is 1500 rpm or 3000 rpm.
The VFD is supposed operate from the lowest to highest speed. The VFD manufacturer will give the range, e.g. 0Hz to 400Hz. Running it outside this range is certainly catastrophic especially at higher end. The balancing should be valid for the entire range not just one speed (Within tolerances).
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