ABB Relion 670 series - Password Policies and Requirements

Weak-end infeed logic................................................................ 763
Setting guidelines............................................................................ 764
Current reversal logic................................................................. 764
Weak-end infeed logic................................................................ 764
Current reversal and weak-end infeed logic for phase segregated
communication ZC1WPSCH (85)......................................................... 765
Identification.................................................................................... 765
Application....................................................................................... 765
Setting guidelines............................................................................ 767
Local acceleration logic ZCLCPSCH.................................................... 768
Identification.................................................................................... 768
Application....................................................................................... 768
Setting guidelines............................................................................ 768
Scheme communication logic for residual overcurrent protection
ECPSCH (85)....................................................................................... 769
Identification.................................................................................... 769
Application....................................................................................... 770
Setting guidelines............................................................................ 770
Current reversal and weak-end infeed logic for residual overcurrent
protection ECRWPSCH (85).................................................................771
Identification.................................................................................... 771
Application....................................................................................... 771
Fault current reversal logic......................................................... 771
Weak-end infeed logic................................................................ 772
Setting guidelines............................................................................ 773
Current reversal..........................................................................773
Weak-end infeed........................................................................ 774
Direct transfer trip logic.........................................................................775
Application....................................................................................... 775
Setting guidelines............................................................................ 776
Low active power and power factor protection LAPPGAPC (37_55)777
Identification............................................................................... 777
Application.................................................................................. 777
Setting guidelines....................................................................... 777
Compensated over and undervoltage protection COUVGAPC
(59_27).............................................................................................778
Identification............................................................................... 778
Application.................................................................................. 778
Setting guidelines....................................................................... 781
Sudden change in current variation SCCVPTOC (51).................... 782
Table of contents
Line distance protection REL670 2.2 ANSI 19
Application manual