11. Glossary
Overcurrent protection (max de I)
Protection sensitive to exceeding a preset current threshold.
Homopolar amperometric overcurrent protection
Protection sensitive to exceeding a preset zero sequence current threshold.
Directional phase protection
Protection capable of discriminating between an upstream polyphase fault and a downstream polyphase fault.
Homopolar wattmetric protection (PWH)
Protection sensitive to exceeding a preset zero sequence power threshold, capable of discriminating between upstream and downstream earth faults.
Directional grounding protection
Protection capable of discriminating between an upstream earth fault and a downstream earth fault....
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