Low cost 20 hp (15 kW) VFD, three phase 220V, 380V, 460V variable frequency drive with good performance, IP20 enclosure, RS485 enabled, brand new direct sale by manufacturer.
Delivery date: 15 - 30 days
20 hp (15 kW) high performance vector variable frequency drive, three phase 220V, 380V, 460V for selection.
||20 hp (15 kW)
||3 phase 220V /380V /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 are the reasons that will cause a VFD failure?
Dust and moisture on variable frequency drive (VFD) hardware because dust absorbs moisture which causes failure so it is better spraying air regularly into VFD. Spraying discharged compressed air is viable in normal environmental condition but the plant where air contains oil and water then it requires a non-static generating spray. 90% of the problems occur due to this dust, moisture and improper ventilation whereas 8 to 10% of problems occur due to field bus and power quality issues and remaining issues happens due to misapplications or assembly defects.
Air conditioning can be detrimental sometimes. High humidity air fills the conduit during the day, but at night the air conditioning can cause the water to condense, drip back into the VFD and accumulate on the PC boards. You should always leave the VFD powered up to keep the moisture out and keep the power supplies on to keep a small amount of heat in the cabinet.
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