Which risk increases when a substation transformer operates beyond its nameplate kVA in a grid?

💡 Explanation

Excessive kVA loading causes increased current flow, resulting in higher magnetic flux density. This induces increased eddy currents in the core laminations due to Faraday's Law causing overheating, because the additional losses are proportional to the square of current. Therefore, overheating is the increased hazard, rather than voltage breakdown effects.

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