Name Values (Range) Unit Step Default DescriptionZ2Rev 0.005 - 3000.000 ohm/p 0.001 30.000 Reverse reach setting for Zone 2tZ2 0.000 - 60.000 s 0.001 0.500 Time delay to operate for Zone 2OpModeZ3 Disable-ZoneEnable-Zone- - Disable-Zone Operation mode of Zone 3Z3Fwd 0.005 - 3000.000 ohm/p 0.001 30.000 Forward reach setting for Zone 3Z3Rev 0.005 - 3000.000 ohm/p 0.001 30.000 Reverse reach setting for Zone 3tZ3 0.000 - 60.000 s 0.001 1.000 Time delay to operate for Zone 3Table 59:ZGCPDIS (21G) Group settings (advanced)Name Values (Range) Unit Step Default DescriptionLoadEnchModeZ3 DisabledEnabled- - Disabled Enable load enchroachment mode Zone 3Table 60:ZGCPDIS (21G) Non group settings (basic)Name Values (Range) Unit Step Default DescriptionGlobalBaseSel 1 - 6 - 1 1 Selection of one of the Global Base Valuegroups7.2.6 Operation principle7.2.6.1 Full scheme measurementThe execution of the different fault loops for phase-to-phase faults are executed inparallel. The use of full scheme technique gives faster operation time compared to theswitched schemes that uses a pickup element to select correct voltage and currentdepending on the fault type.7.2.6.2 Impedance characteristicThe distance function consists of three zones. Each zone is self polarized offset mhocharacteristics with reverse offset. The operating characteristic is in accordance to figure67.Section 7 1MRK 502 048-UUS AImpedance protection162Technical manual
