ABB Relion 650 Series Technical Manual page 12

Table of contents
6.7.7 Operation principle ......................................................................................................................185
6.7.7.1
6.7.7.2
6.7.7.3
6.7.7.4
6.7.7.5
6.7.7.6
6.7.7.7
6.7.8 Technical data................................................................................................................................192
6.8 Time delayed 2-step undercurrent protection UC2PTUC (37)................................................193
6.8.1 Identification................................................................................................................................. 193
6.8.2 Functionality.................................................................................................................................. 193
6.8.3 Function block............................................................................................................................... 193
6.8.4 Signals.............................................................................................................................................194
6.8.5 Settings...........................................................................................................................................194
6.8.6 Operation principle.......................................................................................................................195
6.8.7 Technical data................................................................................................................................195
6.9 Thermal overload protection, one time constant LPTTR (26)................................................195
6.9.1 Identification ................................................................................................................................ 196
6.9.2 Functionality.................................................................................................................................. 196
6.9.3 Function block............................................................................................................................... 196
6.9.4 Signals.............................................................................................................................................196
6.9.5 Settings...........................................................................................................................................197
6.9.6 Monitored data............................................................................................................................. 198
6.9.7 Operation principle...................................................................................................................... 198
6.9.8 Technical data................................................................................................................................201
6.10 Breaker failure protection CCRBRF (50BF)................................................................................ 201
6.10.1 Identification................................................................................................................................. 201
6.10.2 Functionality.................................................................................................................................. 201
6.10.3 Function block...............................................................................................................................202
6.10.4 Signals.............................................................................................................................................202
6.10.5 Settings.......................................................................................................................................... 203
6.10.6 Monitored data............................................................................................................................. 203
6.10.7 Operation principle...................................................................................................................... 204
6.10.8 Technical data............................................................................................................................... 205
6.11 Breaker failure protection CSPRBRF (50BF)..............................................................................205
6.11.1 Identification................................................................................................................................. 205
6.11.2 Functionality..................................................................................................................................205
6.11.3 Function block...............................................................................................................................206
6.11.4 Signals............................................................................................................................................ 206
6.11.5 Settings.......................................................................................................................................... 207
6.11.6 Monitored data............................................................................................................................. 207
6
Function inputs........................................................................................................................185
Directional residual current protection measuring 3I
Directional residual power protection measuring 3I
Directional residual current protection measuring 3I
Directional functions.............................................................................................................. 189
Non-directional ground fault current protection............................................................. 190
Residual overvoltage release and protection.................................................................... 190
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·cos φ.........................................185
0
· 3V · cos φ............................... 188
0 0
and φ........................................ 189
0
Line distance protection REL650
Technical manual