RLdInFw = kLdRFw·RLdOutFwEQUATION1185 V2 EN-US (Equation 12)where:kLdRFw is a settable multiplication factor less than 1The slope of the load encroachment inner and outer boundary is defined by settingthe parameter ArgLd.The load encroachment in the fourth quadrant uses the same settings as in the firstquadrant (same ArgLd and RLdOutFw and calculated value RLdInFw).The quadrilateral characteristic in the first quadrant is tilted to get a betteradaptation to the distance measuring zones. The angle is the same as the line angleand derived from the setting of the reactive reach inner boundary X1InFw and theline resistance for the inner boundary R1LIn. The fault resistance coverage for theinner boundary is set by the parameter R1FInFw.From the setting parameter RLdOutFw and the calculated value RLdInFw adistance between the inner and outer boundary, DFw, is calculated. This value isvalid for R direction in first and fourth quadrant and for X direction in first andsecond quadrant.6.2.6.2 Resistive reach in reverse direction M13877-15 v3To avoid load encroachment in reverse direction, the resistive reach is limited bysetting the parameter RLdOutRv for the outer boundary of the load encroachmentzone. The distance to the inner resistive load boundary RLdInRv is determined byusing the setting parameter kLdRRv in equation 13.RLdInRv = kLdRRv·RLdOutRvEQUATION1187 V2 EN-US (Equation 13)where:kLdRRv is a settable multiplication factor less than 1From the setting parameter RLdOutRv and the calculated value RLdInRv, adistance between the inner and outer boundary, DRv, is calculated. This value isvalid for R direction in second and third quadrant and for X direction in third andfourth quadrant.The inner resistive characteristic in the second quadrant outside the loadencroachment part corresponds to the setting parameter R1FInRv for the innerboundary. The outer boundary is internally calculated as the sum of DRv+R1FInRv.Section 6 1MRK 506 382-UEN AImpedance protection126 Line distance protection REL650 2.2 IECTechnical manual
