In applications where multiple motors are each powered by a separate VFD, care must be taken regarding the selection of the inverter to motor cables. Cable selection is even more critical if the cables are to be run any distance together in a raceway. Single conductor cables, while commonly used for some drive applications, can cause issues in such an installation. In addition to safety issues (see Southwire application note number 2012, VFD Cables – A Safe Bet), electromagnetic coupling can cause issues with drive performance.
VFDs, Motors, and Single Conductors
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