ABB Relion REC670 Applications Manual page 16

Table of contents
14.1.3.6 Intertrip scheme..................................................................................................................... 347
14.2 Current reversal and Weak-end infeed logic for distance protection 3-phase
ZCRWPSCH ..................................................................................................................................... 347
14.2.1 Identification.............................................................................................................................. 347
14.2.2 Application................................................................................................................................. 348
14.2.2.1 Current reversal logic............................................................................................................ 348
14.2.2.2 Weak-end infeed logic...........................................................................................................348
14.2.3 Setting guidelines..................................................................................................................... 349
14.2.3.1 Current reversal logic............................................................................................................ 349
14.2.3.2 Weak-end infeed logic...........................................................................................................349
14.3 Local acceleration logic ZCLCPSCH........................................................................................... 350
14.3.1 Identification..............................................................................................................................350
14.3.2 Application................................................................................................................................. 350
14.3.3 Setting guidelines..................................................................................................................... 350
14.4 Scheme communication logic for residual overcurrent protection ECPSCH ....................351
14.4.1 Identification.............................................................................................................................. 351
14.4.2 Application.................................................................................................................................. 351
14.4.3 Setting guidelines..................................................................................................................... 352
14.5 Current reversal and weak-end infeed logic for residual overcurrent protection
ECRWPSCH...................................................................................................................................... 352
14.5.1 Identification.............................................................................................................................. 352
14.5.2 Application..................................................................................................................................353
14.5.2.1 Fault current reversal logic...................................................................................................353
14.5.2.2 Weak-end infeed logic........................................................................................................... 353
14.5.3 Setting guidelines..................................................................................................................... 354
14.5.3.1 Current reversal......................................................................................................................354
14.5.3.2 Weak-end infeed.....................................................................................................................355
Section 15 Logic................................................................................................................. 357
15.1 Tripping logic SMPPTRC .............................................................................................................. 357
15.1.1 Identification.............................................................................................................................. 357
15.1.2 Application.................................................................................................................................. 357
15.1.2.1 Three-phase tripping ............................................................................................................358
15.1.2.2 Single- and/or three-phase tripping..................................................................................358
15.1.2.3 Single-, two- or three-phase tripping................................................................................ 360
15.1.2.4 Lock-out...................................................................................................................................360
15.1.2.5 Blocking of the function block............................................................................................ 360
15.1.3 Setting guidelines..................................................................................................................... 360
15.2 Trip matrix logic TMAGAPC.......................................................................................................... 361
15.2.1 Identification.............................................................................................................................. 361
15.2.2 Application.................................................................................................................................. 361
15.2.3 Setting guidelines......................................................................................................................361
15.3 Logic for group alarm ALMCALH................................................................................................ 361
15.3.1 Identification.............................................................................................................................. 361
15.3.2 Application..................................................................................................................................362
15.3.3 Setting guidelines..................................................................................................................... 362
15.4 Logic for group alarm WRNCALH............................................................................................... 362
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Application manual