GE Multilin B30 Bus Differential System 5-1315 SETTINGS 5.6 GROUPED ELEMENTS55.6.3 BUS DIFFERENTIALPATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) BUS DIFFERENTIAL BUS ZONE 1(2) DIFFERENTIALTwo zones of bus differential protection are provided. The operation of these elements is completely dependent on thedynamic bus replica, which must be defined first. Both biased and unbiased bus differential protection functions are pro-vided for the bus differential zone.The biased bus differential function has a dual-slope operating characteristic (see figure below) operating in conjunctionwith saturation detection and a directional comparison principle (refer to the Bus zone 1 differential scheme logic figure inthis section). BUS ZONE 1 DIFFERENTIALBUS ZONE 1 DIFFFUNCTION: DisabledRange: Disabled, EnabledMESSAGE BUS ZONE 1 DIFFPICKUP: 0.100 puRange: 0.050 to 6.000 pu in steps of 0.001MESSAGE BUS ZONE 1 DIFFLOW SLOPE: 25%Range: 15 to 100% in steps of 1MESSAGE BUS ZONE 1 DIFFLOW BPNT: 2.00 puRange: 1.00 to 30.00 pu in steps of 0.01MESSAGE BUS ZONE 1 DIFFHIGH SLOPE: 60%Range: 50 to 100% in steps of 1MESSAGE BUS ZONE 1 DIFFHIGH BPNT: 8.00 puRange: 1.00 to 30.00 pu in steps of 0.01MESSAGE BUS ZONE 1 DIFFHIGH SET: 15.00 puRange: 0.10 to 99.99 pu in steps of 0.01MESSAGE BUS ZONE 1 DIFFSEAL-IN: 0.400 sRange: 0.000 to 65.535 s in steps of 0.001MESSAGE BUS ZONE 1 DIFF BLK:OffRange: FlexLogic operandMESSAGE BUS ZONE 1 DIFFTARGET: LatchedRange: Self-reset, Latched, DisabledMESSAGE BUS ZONE 1 DIFFEVENTS: DisabledRange: Disabled, Enabled
