Technical data................................................................................. 144Pole discrepancy protection CCRPLD (52PD)..................................... 145Identification ................................................................................... 145Functionality.................................................................................... 145Function block................................................................................. 145Signals.............................................................................................146Settings............................................................................................146Monitored data.................................................................................147Operation principle.......................................................................... 147Pole discrepancy signaling from circuit breaker......................... 148Unsymmetrical current detection................................................ 149Technical data................................................................................. 149Broken conductor check BRCPTOC (46)............................................. 149Identification.................................................................................... 149Functionality.................................................................................... 150Function block................................................................................. 150Signals.............................................................................................150Settings............................................................................................150Monitored data.................................................................................151Operation principle.......................................................................... 151Technical data................................................................................. 152Directional over-/under-power protection GOPPDOP/GUPPDUP(32/37).................................................................................................. 153Functionality.................................................................................... 153Directional overpower protection GOPPDOP (32).......................... 153Identification............................................................................... 153Function block............................................................................ 154Signals........................................................................................154Settings.......................................................................................155Monitored data............................................................................156Directional underpower protection GUPPDUP (37).........................156Identification............................................................................... 156Function block............................................................................ 156Signals........................................................................................157Settings.......................................................................................157Monitored data............................................................................158Operation principle.......................................................................... 158Low pass filtering........................................................................160Technical data................................................................................. 161Negative sequence based overcurrent function DNSPTOC (46)......... 162Table of contents5Technical manual