Which outcome occurs when a high-voltage electric arc persists in a gas-insulated substation's circuit?

💡 Explanation

Arc breakdown causes decomposition because strong electric fields initiate SF6 *dissociation*, releasing fluorine that reacts with the enclosure, therefore creating corrosive products, rather than inert plasma or improved insulation, under sustained arc conditions.

• Which outcome occurs when pulsations overload a hydro-pneumatic accumulator?
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