ABB Relion Technical Manual page 11

Technical manual
Signals.............................................................................................168
Settings............................................................................................168
Monitored data.................................................................................169
Operation principle.......................................................................... 170
Technical data................................................................................. 173
Out-of-step protection OOSPPAM (78)................................................ 173
Identification.................................................................................... 173
Functionality.................................................................................... 174
Function block................................................................................. 174
Signals.............................................................................................174
Settings............................................................................................175
Monitored data.................................................................................176
Operation principle.......................................................................... 177
Lens characteristic......................................................................180
Detecting an out-of-step condition..............................................182
Maximum slip frequency.............................................................183
Taking care of the circuit breaker soundness.............................184
Design........................................................................................ 186
Technical data................................................................................. 187
Load encroachment LEPDIS ............................................................... 187
Identification.................................................................................... 187
Functionality.................................................................................... 188
Function block................................................................................. 188
Signals.............................................................................................188
Settings............................................................................................188
Operation principle.......................................................................... 189
Load encroachment....................................................................189
Simplified logic diagrams............................................................190
Technical data................................................................................. 191
Section 8 Current protection..............................................................193
Four step phase overcurrent protection 3-phase output OC4PTOC
(51/67).................................................................................................. 193
Identification ................................................................................... 193
Functionality.................................................................................... 193
Function block................................................................................. 194
Signals.............................................................................................194
Settings............................................................................................195
Monitored data.................................................................................197
Operation principle.......................................................................... 197
Table of contents
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