Setting of timers for distance protection zones.................... 235Full-scheme distance measuring, Mho characteristic ZMHPDIS .. 235Identification.............................................................................. 235Application................................................................................. 235Functionality......................................................................... 235System earthing................................................................... 236Fault infeed from remote end............................................... 239Load encroachment..............................................................240Short line application............................................................ 242Long transmission line application....................................... 242Parallel line application with mutual coupling....................... 243Tapped line application........................................................ 248Setting guidelines...................................................................... 249General.................................................................................249Setting of zone 1.................................................................. 250Setting of overreaching zone................................................250Setting of zone 2.................................................................. 250Setting of zone 3.................................................................. 251Setting of reverse zone........................................................ 251Consideration of zero sequence mutual coupling forparallel circuits......................................................................257Load impedance limitation, without load encroachmentfunction.................................................................................257Load impedance limitation, with load encroachmentfunction activated................................................................. 259Setting of minimum operate currents................................... 260Setting of directional mode...................................................260Setting of direction for offset mho.........................................260Setting of timers for distance protection zones.................... 260Full-scheme distance protection, quadrilateral for earth faultsZMMPDIS, ZMMAPDIS.................................................................. 261Identification.............................................................................. 261Application................................................................................. 261Introduction...........................................................................261System earthing................................................................... 261Fault infeed from remote end............................................... 265Load encroachment..............................................................265Short line application............................................................ 266Long transmission line application....................................... 267Parallel line application with mutual coupling....................... 267Tapped line application........................................................ 273Setting guidelines...................................................................... 276General.................................................................................276Setting of zone1................................................................... 276Table of contentsLine distance protection REL670 2.2 IEC 5Application manual
