Solutions
SF6-Free Solution for Air-Insulated/Eco-friendly Gas Ring Main Units
Ⅰ. Technical Bottlenecks of SF ₆ Substitution ( I ) Insulation Medium Performance Gap Dried Air/N₂ insulation strength is only 1/3 of SF₆, requiring expansion of contact gap from 60mm to ≥150mm. Conventional spring mechanisms lack energy to drive rapid closure of large gaps, easily causing contact a
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