Which outcome occurs when a power transformer operates continuously with elevated winding temperature.?

💡 Explanation

When winding temperature elevates, oxidation and thermal degradation of the transformer's dielectric oil accelerates because the chemical reaction rate increases exponentially with temperature according to the Arrhenius equation leading to reduced insulation strength. Therefore dielectric oil breakdown accelerates, rather than the opposite, because core currents, regulation, and inrush are not primary temperature driven effects.

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