Which risk increases when thermal runaway occurs within distribution transformer's oil bath?

💡 Explanation

Accelerated dielectric breakdown appears because thermal runaway intensely heats the insulating oil, initiating pyrolysis and bubble formation via dissolved gases; these vapor bubbles quickly decrease the oil's original insulating strength, therefore a dielectric breakdown is more probable, rather than impacting core saturation directly.

• Which behavior in photovoltaic cells occurs when reverse bias increases excessively?
• Which consequence reduces system efficiency when harmonic currents circulate within a three-phase power transformer?
• Which outcome results when a three-phase induction motor circuit breaker trips due to excessive inrush current during start-up?
• Which outcome occurs when a MOSFET controlled thermoelectric cooler experiences gate oxide breakdown?
• Which outcome occurs when an organic LED's (OLED) cathode oxidizes?
• Which outcome occurs when thermal stress compromises an accumulator bladder in a hydraulic landing gear system?