Which outcome results when variable-frequency drive (VFD) controlling a centrifugal pump experiences rapid setpoint oscillations?

💡 Explanation

When rapid setpoint oscillations occur in a VFD-controlled pump, it induces resonant vibrations because the pump speed rapidly changes, exciting natural frequencies, which accelerates bearing wear. Therefore premature wear results rather than winding breakdown, cavitation, or rupture, which demand other independent factors.

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