Which outcome occurs with excessive transformer core magnetostriction vibration within an oil-filled distribution substation?

💡 Explanation

When magnetostriction vibration becomes excessive, the core's mechanical vibrations are transmitted to the windings causing friction and abrasion between winding conductors and insulation, leading to breakdown. Therefore, accelerated insulation degradation results rather than fan overload, breaker trips, or oil oxidation, which require different issues.

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