ABB Relion 670 Series Applications Manual page 17

14.10.3 Setting guidelines........................................................................................................................ 403
14.11 Single command, 16 signals SINGLECMD.................................................................................. 403
14.11.1 Identification.................................................................................................................................403
14.11.2 Application.................................................................................................................................... 404
14.11.3 Setting guidelines........................................................................................................................ 405
Section 15 Scheme communication................................................................................. 407
15.1 Scheme communication logic for distance or overcurrent protection ZCPSCH(85)........407
15.1.1 Identification.................................................................................................................................407
15.1.2 Application.....................................................................................................................................407
15.1.2.1
15.1.2.2
15.1.2.3
15.1.2.4
15.1.3 Setting guidelines......................................................................................................................... 412
15.1.3.1
15.1.3.2
15.1.3.3
15.1.3.4
15.1.3.5
15.1.3.6
15.2 Current reversal and Weak-end infeed logic for distance protection 3-phase
ZCRWPSCH (85)...............................................................................................................................414
15.2.1 Identification................................................................................................................................. 414
15.2.2 Application..................................................................................................................................... 414
15.2.2.1
15.2.2.2
15.2.3 Setting guidelines.........................................................................................................................416
15.2.3.1
15.2.3.2
15.3 Local acceleration logic ZCLCPSCH.............................................................................................417
15.3.1 Identification..................................................................................................................................417
15.3.2 Application..................................................................................................................................... 417
15.3.3 Setting guidelines......................................................................................................................... 417
15.4 Scheme communication logic for residual overcurrent protection ECPSCH (85)............. 418
15.4.1 Identification................................................................................................................................. 418
15.4.2 Application..................................................................................................................................... 418
15.4.3 Setting guidelines.........................................................................................................................419
15.5 Current reversal and weak-end infeed logic for residual overcurrent protection
ECRWPSCH (85)............................................................................................................................... 419
15.5.1 Identification................................................................................................................................. 419
15.5.2 Application.....................................................................................................................................420
15.5.2.1
Bay control REC670
Application manual
Blocking schemes................................................................................................................... 407
Delta blocking scheme.......................................................................................................... 408
Permissive schemes............................................................................................................... 409
Intertrip scheme...................................................................................................................... 412
Blocking scheme...................................................................................................................... 412
Delta blocking scheme........................................................................................................... 413
Permissive underreaching scheme...................................................................................... 413
Permissive overreaching scheme.........................................................................................413
Unblocking scheme.................................................................................................................413
Intertrip scheme...................................................................................................................... 414
Current reversal logic............................................................................................................. 414
Weak-end infeed logic............................................................................................................ 415
Current reversal logic............................................................................................................. 416
Weak-end infeed logic............................................................................................................ 416
Fault current reversal logic................................................................................................... 420
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