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Transformer - Temperature Derating

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Dry-type transformer capacity derating for ambient above 40 °C per IEC 60076.

Formula

$$ P = P_{rated} \cdot (1 - 0.015 (T - 40)) $$

Symbol legend

SymbolMeaningUnitSource
$T$Ambient temperature°Cambient sensor

Sources

  • IEC 60076-11 - Dry type.