CHAPTER 10: THEORY OF OPERATION SINGLE-POLE TRIPPINGL90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-4710Table 10-30: Blocking scheme trip table for four-bit channelsTable 10-31: Unblocking scheme trip table for four-bit channels1 0 0 0 AG BC, BCG Trip Three Phases0 1 0 0 BG CA, CAG0 0 1 0 CG AB, ABG0 0 0 1 MULTI-P UnrecognizedRemote data Local dataBit pattern received Remote determination offault typeLocal determination of faulttypeTrip outputRX1 RX2 RX3 RX40 0 0 0 Any while the INIT signalwas not establishedTrip as for single-bitchannel1 1 1 0 MULTI-P AG DIR BLOCK TRIP A1 0 1 1 BG AG1 1 0 1 CG AG0 1 1 1 AG AG, AB, ABG, CA, CAG, 3P,Unrecognized1 0 1 1 BG BG, AB, ABG, BC, BCG, 3P,UnrecognizedDIR BLOCK TRIP B0 1 1 1 AG BG1 1 0 1 CG BG1 1 1 0 MULTI-P BG1 1 0 1 CG CG, BC, BCG, CA, CAG, 3P,UnrecognizedDIR BLOCK TRIP C0 1 1 1 AG CG1 0 1 1 BG CG1 1 1 0 MULTI-P CG0 1 1 1 AG BC, BCG DIR BLOCK TRIP 3P1 0 1 1 BG CA, CAG1 1 0 1 CG AB, ABG1 1 1 0 MULTI-P UnrecognizedRemote data Local dataBit pattern received Remotedetermination of faulttypeLocal determinationof fault typeTrip outputRX1 LOG1 RX2 LOG2 RX3 LOG3 RX4 LOG40 0 0 0 0 0 1 1 MULTI-P AG DCUB TRIP A0 0 0 0 0 0 0 10 0 1 1 0 0 0 0 BG0 0 0 1 0 0 0 00 0 0 0 1 1 0 0 CG0 0 0 0 0 1 0 01 1 0 0 0 0 0 0 AG AG, AB, ABG, CA, CAG,3P, unrecognized0 1 0 0 0 0 0 0Remote data Local dataBit pattern received Remotedetermination offault typeLocal determination of faulttypeTrip outputRX1 RX2 RX3 RX4
