Operation principle.................................................................... 180Full scheme measurement................................................... 180Impedance characteristic..................................................... 181Basic operation characteristics.............................................182Theory of operation.............................................................. 184Simplified logic diagrams......................................................193Technical data........................................................................... 197Directional impedance element for mho characteristic ZDMRDIR. 197Identification.............................................................................. 197Functionality.............................................................................. 197Function block........................................................................... 198Signals.......................................................................................198Settings......................................................................................199Monitored data...........................................................................200Operation principle.................................................................... 200Directional impedance element for mho characteristicZDMRDIR.............................................................................200High speed distance protection ZMFPDIS..................................... 203Identification.............................................................................. 203Functionality.............................................................................. 203Function block........................................................................... 205Signals.......................................................................................205Settings......................................................................................208Monitored data...........................................................................212Operation principle.................................................................... 212Filtering.................................................................................212Distance measuring zones................................................... 213Phase-selection criteria........................................................ 214Directional criteria.................................................................215Fuse failure...........................................................................216Power swings....................................................................... 216Measuring principles............................................................ 216Load encroachment..............................................................219Simplified logic schemes...................................................... 220Technical data........................................................................... 226High speed distance protection ZMFCPDIS ..................................226Identification.............................................................................. 226Functionality.............................................................................. 226Function block........................................................................... 228Signals.......................................................................................229Settings......................................................................................231Monitored data...........................................................................237Operation principle.................................................................... 237Table of contents4Technical manual
