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    What are the differences between load reactors, dv/dt filters, and sinus filters for Altivar drives?

    Issue:
    What is the difference between load reactors, dv/dt filters, and sinus filters for Altivar drives?

    Product Line:
    All drives.

    Environment:
    All

    Cause:
    Spike protection and long distance motor connection in respect to the drive.

    Resolution:
    There are three different types of protection that can be added to the output of a drive.  These are load reactors, DV/DT filters, and Sinus filters.  The distance that a motor mounted in respect to the drive is greatly increased as you go from left to right as mentioned above from load reactors to sinus filters.

    Load reactors are your basic motor protection units where they provide an increase in inductance on a long motor cable run.
    DV/DT filters also called motor protection filters have a longer range motor protection compared to load reactors and have built in technology to prevent spikes to the motor.
    Sinus filters have the longest range of motor protection.  They are designed to clean up the PWM wave coming out of the drive and have it resemble an AC sign wave as best as possible going to the motor.

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