ABB RELION RET670 - Page 11

Setting guidelines............................................................................ 235
General.......................................................................................
235
Setting of zone1..........................................................................236
Setting of overreaching zone
......................................................236
Setting of reverse zone...............................................................237
Series compensated and adjacent lines.....................................237
Setting of zones for parallel line application............................... 243
Setting of reach in resistive direction..........................................245
Load impedance limitation, without load encroachment
function.......................................................................................245
Load impedance limitation, with load encroachment function
activated..................................................................................... 247
Setting of minimum operating currents.......................................247
Setting of timers for distance protection zones...........................248
Phase selection, quad, fixed angle, load encroachment
FDPSPDIS (21).................................................................................... 248
Identification.................................................................................... 248
Identification............................................................................... 248
Application....................................................................................... 249
Setting guidelines............................................................................ 249
Load encroachment characteristics............................................249
Resistive reach with load encroachment characteristic..............255
Minimum operate currents..........................................................256
Distance measuring zones, quadrilateral characteristic ZMQPDIS
(21), ZMQAPDIS (21), ZDRDIR (21D)..................................................257
Identification.................................................................................... 257
Application....................................................................................... 257
System grounding.......................................................................257
Fault infeed from remote end..................................................... 261
Load encroachment....................................................................262
Short line application.................................................................. 263
Long transmission line application..............................................264
Parallel line application with mutual coupling............................. 265
Tapped line application...............................................................272
Setting guidelines............................................................................ 275
General.......................................................................................275
Setting of zone 1.........................................................................276
Setting of overreaching zone......................................................276
Setting of reverse zone...............................................................277
Setting of zones for parallel line application............................... 278
Table of contents
Transformer protection RET670 2.2 ANSI 5
Application manual