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The VFD Answer Man, Volume 2: VFD, Line Reactors, and Harmonic Filters

December 20, 2015 |By: Terry M. Smith

DO NOT add pricing to any ACH550 VFD or package for line reactors. They are absolutely not necessary. The ACH550 include 5% dual link DC reactors. When a VFD spec calls for 5% THD current at the VFD input terminals we MUST supply BCR style bypasses. VCR bypasses are too narrow to be modified in the field, and ABB cannot provide them with integrated Trans Coil HGP filters. Whenever a spec calls for a low harmonic content we need the electrical single line drawings,  so we can perform the necessary harmonic precalculations.

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