ABB Relion 670 series - Page 12

Directionality for series compensation........................................204
Simplified logic diagrams............................................................207
Function block.................................................................................211
Input and output signals..................................................................212
Setting parameters..........................................................................214
Technical data.................................................................................218
Phase selection, quadrilateral characteristic with fixed angle
FDPSPDIS (21)....................................................................................218
Identification....................................................................................218
Introduction......................................................................................218
Principle of operation.......................................................................219
Phase-to-ground fault.................................................................221
Phase-to-phase fault..................................................................223
Three-phase faults......................................................................225
Load encroachment....................................................................225
Minimum operate currents..........................................................230
Simplified logic diagrams............................................................231
Function block.................................................................................236
Input and output signals..................................................................236
Setting parameters..........................................................................237
Technical data.................................................................................239
Full-scheme distance measuring, Mho characteristic ZMHPDIS
(21).......................................................................................................239
Introduction......................................................................................239
Principle of operation.......................................................................241
Full scheme measurement.........................................................241
Impedance characteristic............................................................241
Basic operation characteristics...................................................242
Theory of operation....................................................................244
Simplified logic diagrams............................................................254
Function block.................................................................................257
Input and output signals..................................................................258
Setting parameters..........................................................................259
Technical data.................................................................................260
Full-scheme distance protection, quadrilateral for earth faults
ZMMPDIS (21), ZMMAPDIS (21).........................................................261
Introduction......................................................................................261
Principle of operation.......................................................................262
Full scheme measurement.........................................................262
Impedance characteristic............................................................263
Table of contents
6
Technical reference manual