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← TechnologyWhich risk significantly increases when a three-phase power transformer experiences an unbalanced load?
A)Core saturation and harmonic distortion✓
B)Winding insulation degradation from UV
C)Cooling system failure due to pressure
D)Increased eddy current losses in windings
💡 Explanation
When an unbalanced load occurs, each phase carries a different current leading to unequal magnetic fluxes in the core and therefore core saturation, generating harmonic distortion in the output voltage. Therefore, core saturation results, rather than the other options which stem from entirely unrelated failure modes.
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