IEC10000226-1-en.vsd&& t10 mst20 ms&Bool tointegerSTCNDLEBLOCK&Block03 0.1I <03 0.4 phmaxI I< ×&OR03 0.05I ³03 0.2 phmaxI I³ ×RXL1L1L2&IEC10000226 V1 ENFigure 86: Phase-to-phase L1L2 operating conditions (residual current criteria)Special attention is paid to correct phase selection at evolving faults. A STCNDLEoutput signal is created as a combination of the load encroachment characteristic andcurrent criteria, refer to figure 86. This signal can be configured to STCND functionalinput signals of the distance protection zone and this way influence the operation ofthe phase-to-phase zone measuring elements and their phase related starting andtripping signals.7.5.7 Technical dataTable 82:LEPDIS technical dataFunction Range or value AccuracyLoad encroachment criteria:Load resistance, forward andreverseSafety load impedance angle(1.00–3000.00) Ω/phase(5-85) degrees± 5.0% static accuracy± 2.0 degrees static angularaccuracyConditions:Voltage range: (0.1-1.1) x UrCurrent range: (0.5-30) x IrReset ratio 105% typically -Section 7 1MRK 502 048-UEN AImpedance protection176Technical manual
