Automatic Reclosing for Isolated Neutral Electric Grid Under Single-phase to Ground Fault
6–35 kV electrical networks operates with isolated or compensated neutrals. Such mode of a neutral is the reason of emergence of considerable overvoltage in an electrical network during single- phase ground fault (SFGF), especially during short-circuit through an arc and various ferro-resonance phenomena. These overvoltage destroy the insulation of the electrically coupled network.