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← TechnologyWhich consequence results when exceeding max current limits of a three-phase transformer's circuit?
A)Insulation breakdown and possible arc-fault✓
B)Increased hysteresis losses in core steel
C)Harmonic resonance within connected grid
D)Elevated dielectric stress in bushings
💡 Explanation
Exceeding current limits leads to overheating and *dielectric breakdown*, because excessive current generates joule heating within the circuit insulation causing rapid degradation. Therefore, arcing can occur, rather than hysteresis increases or harmonic resonance, these occurring at designed voltage loads.
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