Glossary
Protection Plan for Medium Voltage Public Distribution Networks

Overcurrent ammeter protection; overcurrent protection

Fault detection principle based on exceeding a preset maximum current threshold.

Voltage protection; over/under voltage protection

Fault detection principle based on crossing a preset voltage threshold (maximum or minimum threshold).

Directional protection

Detection principle used to detect and locate a fault upstream or downstream of the measurement point.

Recloser; reclosing

Automatic device activated by the protection associated with a circuit-breaker, controlling the opening and closing of this circuit-breaker according to preset cycles, fast and slow.

Défaut auto-exincteur; self auto-extinguishing fault

Fault...