Which outcome occurs when a three-phase power transformer experiences an internal winding short circuit with delayed breaker response?

💡 Explanation

When a winding short develops, high fault current will flow leading to an arc through the insulation, if the breaker is delayed. Arc flash occurs because the large current produces intense heat, rapidly increasing temperature and potential for explosion. Therefore arc flash results, rather than over-fluxing, resonance, or distortion which require different circuit conditions.

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