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Within a three-phase induction motor, which risk significantly increases when regenerative braking current exceeds breaker capacity?

A)Back EMF damages stator windings
B)Overspeed causes bearing seizure
C)Circuit breaker thermal overload tripping
D)Inverter DC link voltage sags

💡 Explanation

Excessive regenerative current exceeding the breaker's rating causes thermal overload tripping because the protection mechanism actuates to prevent damage due to sustained overcurrent. Therefore, the breaker trips rather than allowing overcurrent, preventing winding damage.

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