Which risk significantly increases when three-phase transformer voltage imbalance exceeds design limits?

💡 Explanation

When voltage imbalance occurs, negative sequence currents circulate, because they induce counter-rotating magnetic fields in connected motors leading to hotspots and reduced lifespan from overheating. Therefore, motor overheating is more likely rather than saturation, conductor melting, or insulation breakdown, requiring specific overload or high-frequency conditions.

• Which latent failure is triggered when welding high-strength steel?
• Which condition commonly triggers surface cracking following die forging of high-strength steel components?
• Which outcome inevitably reduces the coefficient of performance (COP) in a refrigeration heat pump system that accumulates frost?
• What is a potential consequence when salt water weakens a slab's rebar?
• Which effect occurs in a turbocharged diesel engine when exhaust gas recirculation valve sticks open?
• Which risk increases when a metal forging blank exceeds drawing tolerance?