ABB Relion 650 Series Technical Manual page 21

11.4 Scheme communication logic for residual overcurrent protection ECPSCH (85)............. 351
11.4.1 Identification..................................................................................................................................351
11.4.2 Functionality.................................................................................................................................. 351
11.4.3 Function block............................................................................................................................... 351
11.4.4 Signals.............................................................................................................................................352
11.4.5 Settings...........................................................................................................................................352
11.4.6 Operation principle...................................................................................................................... 353
11.4.6.1
11.4.6.2
11.4.6.3
11.4.7 Technical data............................................................................................................................... 356
11.5 Current reversal and weak-end infeed logic for residual overcurrent protection
ECRWPSCH (85)...............................................................................................................................356
11.5.1 Identification................................................................................................................................. 356
11.5.2 Functionality.................................................................................................................................. 357
11.5.3 Function block............................................................................................................................... 357
11.5.4 Signals............................................................................................................................................. 357
11.5.5 Settings.......................................................................................................................................... 358
11.5.6 Operation principle...................................................................................................................... 359
11.5.6.1
11.5.6.2
11.5.6.3
11.5.7 Technical data............................................................................................................................... 360
Section 12 Logic.................................................................................................................. 361
12.1 Tripping logic SMPPTRC (94)........................................................................................................ 361
12.1.1 Identification................................................................................................................................. 361
12.1.2 Functionality.................................................................................................................................. 361
12.1.3 Function block............................................................................................................................... 361
12.1.4 Signals............................................................................................................................................. 361
12.1.5 Settings.......................................................................................................................................... 362
12.1.6 Operation principle...................................................................................................................... 362
12.1.7 Technical data............................................................................................................................... 363
12.2 Tripping logic SPTPTRC 94........................................................................................................... 363
12.2.1 Identification................................................................................................................................. 363
12.2.2 Functionality.................................................................................................................................. 363
12.2.3 Function block...............................................................................................................................364
12.2.4 Signals............................................................................................................................................ 364
12.2.5 Settings.......................................................................................................................................... 365
12.2.6 Operation principle...................................................................................................................... 365
12.2.7 Technical data............................................................................................................................... 368
12.3 Trip matrix logic TMAGGIO........................................................................................................... 368
12.3.1 Identification................................................................................................................................. 368
Line distance protection REL650
Technical manual
Blocking scheme......................................................................................................................353
Permissive under/overreaching scheme............................................................................354
Unblocking scheme.................................................................................................................355
Directional comparison logic function............................................................................... 359
Fault current reversal logic....................................................................................................359
Weak-end infeed logic............................................................................................................359
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