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LINE REACTORS
As a measure of suppressing harmonics induced on the power supply lines, it is applied when an imbalance of the major power voltage exceeds 3% (and power source capacity is more than 500kVA) or when the power voltage is rapidly charged. It protects VFD against line transient and extends the capacitor life, and improves the power factor.
LOAD REACTORS
This reactor reduces the vibration in the motor caused by the VFD’s switching waveforms. This is accomplished by smoothing the waveforms to approximate commercial power quality. A load reactor is necessary when the wiring from the VFD to the motor is more than 32 feet in length.

        

        
DV/DT FILTERS
Use to protect the AC motors from the destructive effects of peak voltage facilitated by long cable runs between the VFD and motor. Use when the cable length is up to 1,000 feet.
SINE FILTERS
Sine wave filter eliminate the problem of motor/cable insulation failures along with heating and audible noise. Use a sine filter when the cable length is between 1,000 feet and 15,000 feet.