CHAPTER 4: SETPOINTS PROTECTION889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–185Figure 4-65: Ground Time Overcurrent Protection logic diagram894121A2.cdrSETPOINTSRUNSETPOINTSFUNCTION:Disabled = 0TripPICKUP:CURVE:TDM:Ig > PICKUPANDOperate Output Relay 1 (TRIP)LED: PICKUPLED: TRIPAlarmORORAdjust PKPANDLatched AlarmANDRESET:Ground current(Ig)From Ground CTSETPOINTSBLOCK:Off = 0From Autoreclose(per shot settings)From Cold Load PickupLED: ALARMRESETCommandANDSRLATCHSETPOINTSDo Not Operate, OperateOUTPUT RELAYSSETPOINTSINPUT:Phasor,RMSConfigurableGround TOC1 PKPFLEXLOGIC OPERANDSGround TOC1 OPFLEXLOGIC OPERANDSDIRECTION:Direction (from GroundDirectional OC element)SetDominantFrom Manual CloseBlockingSETPOINTSSIGNALINPUT:CT Bank 1 –J1CONFIGURABLE IN 845USED ONLY IN 845/889USED ONLY IN 845
