ABB ret650 - Page 12

Operation principle.................................................................... 175
Technical data........................................................................... 179
Breaker failure protection 3-phase activation and output CCRBRF 179
Identification.............................................................................. 179
Functionality.............................................................................. 179
Function block........................................................................... 180
Signals.......................................................................................180
Settings......................................................................................181
Monitored data...........................................................................181
Operation principle.................................................................... 182
Technical data........................................................................... 184
Pole discordance protection CCRPLD .......................................... 185
Identification ............................................................................. 185
Functionality.............................................................................. 185
Function block........................................................................... 185
Signals.......................................................................................186
Settings......................................................................................186
Monitored data...........................................................................187
Operation principle.................................................................... 187
Pole discordance signaling from circuit breaker...................188
Unsymmetrical current detection..........................................188
Technical data........................................................................... 189
Directional over-/under-power protection GOPPDOP/GUPPDUP. 189
Functionality.............................................................................. 189
Directional overpower protection GOPPDOP ...........................190
Identification......................................................................... 190
Function block...................................................................... 190
Signals..................................................................................190
Settings................................................................................ 191
Monitored data..................................................................... 192
Directional underpower protection GUPPDUP.......................... 192
Identification......................................................................... 192
Function block...................................................................... 192
Signals..................................................................................193
Settings................................................................................ 193
Monitored data..................................................................... 194
Operation principle.................................................................... 194
Low pass filtering..................................................................196
Technical data........................................................................... 197
Negative sequence based overcurrent function DNSPTOC ..........197
Identification.............................................................................. 197
Functionality.............................................................................. 198
Function block........................................................................... 198
Table of contents
6
Technical manual