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← TechnologyWhich risk most immediately intensifies when SF6 circuit breaker density decreases?
A)Increased contact arcing duration✓
B)Elevated transformer core saturation
C)Decreased transmission line impedance
D)Impulse withstand voltage degradation
💡 Explanation
Lower SF6 density reduces the dielectric strength; consequently, arc quenching ability diminishes because insulation breakdown resistance declines; therefore higher density is utilized to lessen arcing, rather than impact transformer saturation.
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