ABB REL650 series Technical Manual page 25

Technical manual
Identification.................................................................................... 508
Functionality.................................................................................... 508
Function block................................................................................. 508
Signals.............................................................................................509
Settings............................................................................................509
Operation principle.......................................................................... 510
Current reversal logic................................................................. 510
Weak-end infeed logic................................................................ 511
Technical data................................................................................. 512
Local acceleration logic ZCLCPLAL..................................................... 513
Identification.................................................................................... 513
Functionality.................................................................................... 513
Function block................................................................................. 513
Signals.............................................................................................513
Settings............................................................................................514
Operation principle.......................................................................... 515
Zone extension........................................................................... 515
Loss-of-Load acceleration.......................................................... 515
Technical data................................................................................. 516
Scheme communication logic for residual overcurrent protection
ECPSCH (85)....................................................................................... 516
Identification.................................................................................... 516
Functionality.................................................................................... 517
Function block................................................................................. 517
Signals.............................................................................................517
Settings............................................................................................518
Operation principle.......................................................................... 519
Blocking scheme........................................................................ 519
Permissive under/overreaching scheme.................................... 520
Unblocking scheme.................................................................... 521
Technical data................................................................................. 522
Current reversal and weak-end infeed logic for residual overcurrent
protection ECRWPSCH (85).................................................................523
Identification.................................................................................... 523
Functionality.................................................................................... 523
Function block................................................................................. 524
Signals.............................................................................................524
Settings............................................................................................525
Operation principle.......................................................................... 525
Directional comparison logic function......................................... 525
Table of contents
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