Why are VFD motor cables considered special cables?

VFD motor cables are used between variable frequency drives and motors. They must handle fast switching waveforms, harmonics, and high dv/dt stress.
Poor cable selection can cause motor insulation stress, bearing currents, EMC interference, and unstable control signals nearby.
Special VFD cables often use symmetrical grounding conductors, low impedance screens, or dual shield structures.
Cable length, drive output waveform, motor insulation, and grounding design must be considered together.