CHAPTER 4: SETPOINTS PROTECTION889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–197Figure 4-69: Sensitive Ground Instantaneous Overcurrent Protection logic diagram894040A2.cdrSETPOINTSSensitive Ground current (Isg)RUNSETPOINTSBLOCK:Off = 0PICKUP:Isg > PICKUPORANDOperate Output Relay 1 (TRIP)LED: TRIPORORFrom Cold Load PickupFrom Sensitive Ground CTAND ANDSETPOINTFUNCTION:Disabled = 0TripAlarmLatched AlarmPICKUP DELAY:SETPOINTSt PKPFrom Autoreclose(per shot settings)LED: ALARMRESETCommandANDSRLATCHLED: PICKUPSETPOINTSDo Not Operate, OperateOUTPUT RELAYS 3 to 7DIRECTION:DROPOUT DELAY:tRSTConfigurableSGnd IOC 1 PKPFLEXLOGIC OPERANDSSGnd IOC 1 OPFLEXLOGIC OPERANDSDirection (from Sens GroundDirectional OC element)SetDominantFrom Manual CloseBlocking
