UFLS-1 Numerical Under frequency Load Shedding Protection Scheme

NAS-1 Numerical  Auto-Switching  Scheme

         GD61 Fiber Router

    GD81 Power Distribution Substation

Distribution Terminal Unit (DTU)

   Feeder Terminal Unit (FTU)

            GD6e

        GD60-LSD

Mini-IPAC Integrated Protection and Control System

  The Mini-iPAC protection system comprises a separate set of relay on each feeder / capacitor bank circuit for trip circuit supervision, blocking, indications and alarms functions, and makes up of a system via GD8 and communication network.