GE Multilin D60 Line Distance Relay 8-258 THEORY OF OPERATION 8.5 SINGLE-POLE TRIPPING8d) FOUR-BIT CHANNELSThe TX1, TX2, TX3, TX4, RX1, RX2, RX3 and RX4 operands are used.The action output is generated per the following tables.Table 8ñ18: BLOCKING SCHEME TRIP TABLE FOR 2-BIT CHANNELSREMOTE DATA LOCAL DATABIT PATTERN RECEIVED REMOTE DETERMINATION OF FAULTTYPELOCAL DETERMINATIONOF FAULT TYPETRIP OUTPUTRX1 RX20 1 AG, BC, BCG AG, AB, ABG CA, CAG, 3P DIR BLOCK TRIP A1 0 BG, CA, CAG AG0 0 CG, AB, ABG, 3P, Unrecognized AG1 0 BG, CA, CAG BG, AB, ABG, BC, BCG, 3P DIR BLOCK TRIP B0 0 CG, AB, ABG, 3P, Unrecognized BG0 1 AG, BC, BCG BG0 0 CG, AB, ABG, 3P, Unrecognized CG, BC, BCG, CA, CAG DIR BLOCK TRIP C0 1 AG, BC, BCG CG1 0 BG, CA, CAG CG0 0 CG, AB, ABG, 3P, Unrecognized AB, ABG, 3P, Unrecognized DIR BLOCK TRIP 3P0 1 AG, BC, BCG BC, BCG Unrecognized1 0 BG, CA, CAG CA, CAG UnrecognizedTable 8ñ19: PERMISSIVE SCHEME TRANSMIT CODES FOR 4-BIT CHANNELSPHASE SELECTORDETERMINATION OF FAULT TYPEBIT PATTERN TRANSMITTEDTX1 TX2 TX3 TX4AG 1 0 0 0BG 0 1 0 0CG 0 0 1 0AB, ABG, BC, BCG, CA, CAG, 3P,Unrecognized0 0 0 1Table 8ñ20: BLOCKING SCHEME TRANSMIT CODES FOR 4-BIT CHANNELSPHASE SELECTORDETERMINATION OF FAULTTYPEBIT PATTERN TRANSMITTED FLEXLOGICô OPRERANDS ASSERTEDTX1 TX2 TX3 TX4 TX1 STOP TX2 STOP TX3 STOP TX4 STOPAG 0 1 1 1 1 0 0 0BG 1 0 1 1 0 1 0 0CG 1 1 0 1 0 0 1 0AB, ABG, BC, BCG, CA, CAG,3P, Unrecognized 1 1 1 0 0 0 0 1
