Which risk increases when a transformer's core lamination insulation fails in a power distribution system?

💡 Explanation

When lamination insulation fails, circulating eddy currents increase within the core because the laminations are no longer electrically isolated, resulting in localized overheating due to I^2R losses. Therefore core overheating results, rather than altered capacitance, flashover, or harmonic distortion, which stem from alternative electrical failures.

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• Which outcome occurs when transformer's core lamination insulation fails under load?
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