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SF6 Gas hvdc converter transformer Reclaim suppliers

HVDC main challenges with protection and switching ...· Direct-current fault current has no zero crossings. This creates problems because all mechanical DC circuitbreaker exploit natural zero crossing to interrupt the current arc. Direct-current line impedances are significantly lower. This implies much larger fault current magnitudes and a low voltage level across the entire grid for a DC fault. Locating a fault in DC …

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