ABB Relion 670 series - Page 11

Setting guidelines............................................................................ 241
General.......................................................................................241
Setting of zone 1.........................................................................242
Setting of overreaching zone......................................................242
Setting of reverse zone...............................................................243
Setting of zones for parallel line application............................... 244
Setting of reach in resistive direction..........................................245
Load impedance limitation, without load encroachment function246
Load impedance limitation, with Phase selection with load
encroachment, quadrilateral characteristic function activated ...248
Setting of minimum operating currents.......................................248
Directional impedance element for quadrilateral characteristics 248
Setting of timers for distance protection zones...........................251
Full-scheme distance measuring, Mho characteristic ZMHPDIS (21).. 251
Identification.................................................................................... 251
Application....................................................................................... 251
Functionality............................................................................... 251
System grounding.......................................................................252
Fault infeed from remote end..................................................... 255
Load encroachment....................................................................256
Short line application.................................................................. 258
Long transmission line application..............................................259
Parallel line application with mutual coupling............................. 260
Tapped line application...............................................................265
Setting guidelines............................................................................ 266
General.......................................................................................266
Setting of zone 1.........................................................................267
Setting of zone 2.........................................................................268
Setting of zone 3.........................................................................268
Setting of reverse zone...............................................................268
Consideration of zero sequence mutual coupling for parallel
circuits........................................................................................ 274
Load impedance limitation, without load encroachment function274
Load impedance limitation, with load encroachment function
activated..................................................................................... 277
Setting of minimum operate currents..........................................277
Setting of directional mode......................................................... 277
Setting of direction for offset mho...............................................277
Setting of timers for distance protection zones...........................277
Table of contents
Line distance protection REL670 2.2 ANSI 5
Application manual