5-58L90 Line Differential RelayGE Power Management5.5 GROUPED ELEMENTS 5 SETTINGS5Figure 5–19: STUB BUS SCHEME LOGIC5.5.6 LINE PICKUPPATH: SETTINGS ÖØ GROUPED ELEMENTS Ö SETTING GROUP 1(8) ÖØ LINE PICKUPThe line pickup feature uses a combination of undercurrent and undervoltage to identify a line that has been de-energized(line end open). Three instantaneous overcurrent elements are used to identify a previously de-energized line that hasbeen closed onto a fault which could be due to maintenance grounds that have not been removed. Faults other than close-in faults can be identified satisfactorily by the distance elements which initially will be self or faulted phase polarized andthen become memory polarized when a satisfactory memory signal is available. LINE PICKUPLINE PICKUPFUNCTION: DisabledRange: Disabled, EnabledMESSAGE LINE PICKUP SIGNALSOURCE: SRC 1Range: SRC 1, SRC 2,..., SRC 6MESSAGE PHASE IOC LINEPICKUP: 1.000 puRange: 0.000 to 30.000 pu in steps of 0.001MESSAGE POS SEQ UVPICKUP: 0.700 puRange: 0.000 to 3.000 pu in steps of 0.001MESSAGE LINE END OPEN PICKUPDELAY: 0.150 sRange: 0.000 to 65.535 s in steps of 0.001MESSAGE LINE END OPEN RESETDELAY: 0.090 sRange: 0.000 to 65.535 s in steps of 0.001MESSAGE POS SEQ OV PICKUPDELAY: 0.040 sRange: 0.000 to 65.535 s in steps of 0.001MESSAGE AR CO-ORD BYPASS:EnabledRange: Disabled, EnabledMESSAGE AR CO-ORD PICKUPDELAY: 0.045 sRange: 0.000 to 65.535 s in steps of 0.001MESSAGE AR CO-ORD RESETDELAY: 0.005 sRange: 0.000 to 65.535 s in steps of 0.001MESSAGE LINE PICKUP BLOCK:OffRange: FlexLogic™ operandMESSAGE LINE PICKUPTARGET: Self-resetRange: Self-reset, Latched, DisabledMESSAGE LINE PICKUPEVENTS: DisabledRange: Disabled, Enabled
