Which consequence results when a variable-frequency drive controlling a centrifugal pump experiences a rapid voltage transient?

💡 Explanation

When a VFD experiences a rapid voltage transient, common-mode voltage is produced because of fast switching edges, inducing high-frequency eddy currents within the motor and pump bearings, leading to electric discharge machining (EDM) and premature bearing failure. Therefore, bearing damage results, rather than, deformation, cavitation, or seal failure each requiring different conditions.

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