Which risk increases when interrupting high inductive load using a distribution transformer's vacuum circuit breaker?

💡 Explanation

When interrupting a high inductive load, the vacuum breaker's rapid current interruption causes a voltage spike due to the circuit's stored energy and inductance, potentially exceeding insulation limits. Therefore, a transient voltage spike results, rather than harmonics, inrush current, or wear which involve alternative transformer failure modes and different causes.

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