
7.1.3.4 Setting of reverse zone..........................................................................................................181
7.1.3.5 Series compensated and adjacent lines............................................................................ 181
7.1.3.6 Setting of zones for parallel line application....................................................................185
7.1.3.7 Setting of reach in resistive direction................................................................................ 187
7.1.3.8 Load impedance limitation, without load encroachment function............................. 187
7.1.3.9 Load impedance limitation, with load encroachment function activated................. 189
7.1.3.10 Setting of minimum operating currents........................................................................... 189
7.1.3.11 Setting of timers for distance protection zones............................................................. 189
7.2 Phase selection, quadrilateral characteristic with fixed angle FDPSPDIS......................... 190
7.2.1 Identification..............................................................................................................................190
7.2.1.1 Identification...........................................................................................................................190
7.2.2 Application..................................................................................................................................190
7.2.3 Setting guidelines..................................................................................................................... 190
7.2.3.1 Load encroachment characteristics...................................................................................190
7.2.3.2 Resistive reach with load encroachment characteristic................................................ 196
7.2.3.3 Minimum operate currents.................................................................................................. 196
7.3 Distance measuring zones, quadrilateral characteristic ZMQPDIS,
ZMQAPDIS, ZDRDIR........................................................................................................................197
7.3.1 Identification.............................................................................................................................. 197
7.3.2 Application.................................................................................................................................. 197
7.3.2.1 System earthing......................................................................................................................197
7.3.2.2 Fault infeed from remote end.............................................................................................200
7.3.2.3 Load encroachment...............................................................................................................201
7.3.2.4 Short line application............................................................................................................ 202
7.3.2.5 Long transmission line application....................................................................................202
7.3.2.6 Parallel line application with mutual coupling................................................................. 203
7.3.2.7 Tapped line application........................................................................................................ 209
7.3.3 Setting guidelines...................................................................................................................... 211
7.3.3.1 General...................................................................................................................................... 211
7.3.3.2 Setting of zone 1..................................................................................................................... 211
7.3.3.3 Setting of overreaching zone............................................................................................... 211
7.3.3.4 Setting of reverse zone..........................................................................................................212
7.3.3.5 Setting of zones for parallel line application.................................................................... 213
7.3.3.6 Setting of reach in resistive direction................................................................................214
7.3.3.7 Load impedance limitation, without load encroachment function............................. 214
7.3.3.8 Load impedance limitation, with Phase selection with load encroachment,
quadrilateral characteristic function activated .............................................................. 216
7.3.3.9 Setting of minimum operating currents........................................................................... 216
7.3.3.10 Directional impedance element for quadrilateral characteristics................................216
7.3.3.11 Setting of timers for distance protection zones............................................................. 218
7.4 Full-scheme distance measuring, Mho characteristic ZMHPDIS ......................................... 219
7.4.1 Identification.............................................................................................................................. 219
7.4.2 Application.................................................................................................................................. 219
7.4.2.1 Functionality............................................................................................................................219
7.4.2.2 System earthing......................................................................................................................219
7.4.2.3 Fault infeed from remote end..............................................................................................222
Table of contents
4
Application manual