HarmonicGuard drive-applied harmonic filters are used where drives are or will be installed, and harmonic reduction is necessary.  When applied at the load, the filters provide a low impedance path for the major harmonic currents demanded by the drive.  This greatly reduces the amount of harmonic current flowing through the distribution system and results in improved power factor, lower RMS currents, lower harmonic current distortion, lower harmonic voltage distortion and increased system capacity.

Primary candidates for filtering are installations of variable frequency drives or adjustable speed devices in facilities where those drives represent a significate portion of the load, or when specifications call for limited harmonics.