7.3.3 Function blockLEPDISI3P*U3P*BLOCKSTCNDLEIEC10000119-1-en.vsdIEC10000119 V1 ENFigure 59: LEPDIS function block7.3.4 SignalsTable 61:LEPDIS Input signalsName Type Default DescriptionI3P GROUPSIGNAL- Three phase group signal for current inputsU3P GROUPSIGNAL- Three phase group signal for voltage inputsBLOCK BOOLEAN 0 Block of functionTable 62:LEPDIS Output signalsName Type DescriptionSTCNDLE INTEGER Binary coded starts from load encroachment7.3.5 SettingsTable 63:LEPDIS Group settings (basic)Name Values (Range) Unit Step Default DescriptionRLd 0.05 - 3000.00 ohm/p 0.01 1.00 Load resistive reach in ohm/phaseArgLd 5 - 85 Deg 1 38 Load encroachment inclination of loadangular sectorTable 64:LEPDIS Non group settings (basic)Name Values (Range) Unit Step Default DescriptionGlobalBaseSel 1 - 6 - 1 1 Selection of one of the Global Base Valuegroups7.3.6 Operation principleThe basic impedance algorithm for the operation of Load encroachment LEPDIS isthe same as for the distance zone measuring function. LEPDIS includes threeimpedance measuring loops intended for phase-to-phase as well as for three-phasefaults.Section 7 1MRK 504 135-UEN AImpedance protection138Technical manual
