ABB Relion 670 Series Applications Manual page 17

14.2.2.1 Current reversal logic...................................................................................................................388
14.2.2.2 Weak-end infeed logic................................................................................................................. 389
14.2.3 Setting guidelines............................................................................................................................390
14.2.3.1 Current reversal logic.................................................................................................................. 390
14.2.3.2 Weak-end infeed logic................................................................................................................. 390
14.3 Local acceleration logic ZCLCPSCH.................................................................................................. 391
14.3.1 Identification.....................................................................................................................................391
14.3.2 Application.........................................................................................................................................391
14.3.3 Setting guidelines............................................................................................................................ 391
14.4 Scheme communication logic for residual overcurrent protection ECPSCH (85)...................392
14.4.1 Identification.................................................................................................................................... 392
14.4.2 Application........................................................................................................................................ 392
14.4.3 Setting guidelines............................................................................................................................ 393
14.5 Current reversal and weak-end infeed logic for residual overcurrent protection
ECRWPSCH (85).................................................................................................................................... 393
14.5.1 Identification.................................................................................................................................... 393
14.5.2 Application........................................................................................................................................ 394
14.5.2.1 Fault current reversal logic......................................................................................................... 394
14.5.2.2 Weak-end infeed logic................................................................................................................. 394
14.5.3 Setting guidelines............................................................................................................................395
14.5.3.1 Current reversal............................................................................................................................ 395
14.5.3.2 Weak-end infeed........................................................................................................................... 396
Section 15 Logic...................................................................................................................... 397
15.1 Tripping logic SMPPTRC (94)............................................................................................................. 397
15.1.1 Identification.....................................................................................................................................397
15.1.2 Application........................................................................................................................................ 397
15.1.2.1 Three-pole tripping ..................................................................................................................... 398
15.1.2.2 Single- and/or three-pole tripping........................................................................................... 398
15.1.2.3 Single-, two- or three-pole tripping..........................................................................................400
15.1.2.4 Lock-out......................................................................................................................................... 400
15.1.2.5 Blocking of the function block................................................................................................... 401
15.1.3 Setting guidelines............................................................................................................................401
15.2 Trip matrix logic TMAGAPC................................................................................................................ 401
15.2.1 Identification.................................................................................................................................... 401
15.2.2 Application........................................................................................................................................ 401
15.2.3 Setting guidelines............................................................................................................................402
15.3 Logic for group alarm ALMCALH...................................................................................................... 402
15.3.1 Identification.................................................................................................................................... 402
15.3.2 Application........................................................................................................................................ 402
15.3.3 Setting guidelines............................................................................................................................402
15.4 Logic for group alarm WRNCALH......................................................................................................402
15.4.1 Logic for group warning WRNCALH.............................................................................................402
Application manual
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