10.9. Configuring the directional ground fault protection

 

           Directional ground fault protection also has two directions – forward and reverse. Like in directional overcurrent protection user also have to define direction, time settings, current settings, characteristic angle and sector angle.

 

 

 

           Differently than in overcurrent protection user can also define directional protection tripping zone characteristic. The user can choose Sector (same like in directional overcurrent protection), Sin (no sector angle property) and Cos (no sector angle property). By selecting different short circuit from the table, the user can view its vectors in the diagram and see if protection will trip. If the current vector is inside light blue area ground fault protection will trip.