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Harmonic Mitigation



As long as the incoming power is strong and does not already reflect depressions or downward swings in line voltage, adding a harmonic filter to a drive system that already has a built-in 2.5% line reactor will not be a problem. It is very important to have the series line reactor in the filter circuit. If the 2.5% added voltage drop at full load is a concern, it is recommended that the drive customer to remove the drives internal 2.5% line reactor. The series inductor designed into the harmonic filter provides an inductance value that is important to the level of harmonic mitigation performed by the filter.

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