Siemens SIPROTEC 7SJ80

2.12.8 Information List.........................................................................................................195
2.12.9 Information List EPTR, TNP......................................................................................... 196
2.13 Intermittent Ground Fault Protection...............................................................................198
2.13.1 Functional Description...............................................................................................198
2.13.2 Setting Notes.............................................................................................................201
2.13.3 Settings.....................................................................................................................202
2.13.4 Information List.........................................................................................................203
2.14 Dir. Intermittent earth fault protection............................................................................ 204
2.14.1 Functional Description...............................................................................................204
2.14.2 Setting Notes.............................................................................................................207
2.14.3 Settings.....................................................................................................................208
2.14.4 Information List.........................................................................................................208
2.15 Automatic Reclosing System 79.......................................................................................209
2.15.1 Program Execution.................................................................................................... 209
2.15.2 Blocking.................................................................................................................... 213
2.15.3 Status Recognition and Monitoring of the Circuit Breaker........................................... 215
2.15.4 Controlling Protection Elements.................................................................................216
2.15.5 Zone Sequencing / Fuse Saving Scheme..................................................................... 218
2.15.6 Setting Notes.............................................................................................................219
2.15.7 Settings.....................................................................................................................224
2.15.8 Information List.........................................................................................................230
2.16 Fault Locator...................................................................................................................232
2.16.1 Functional Description...............................................................................................232
2.16.2 Setting Notes.............................................................................................................233
2.16.3 Settings.....................................................................................................................234
2.16.4 Information List.........................................................................................................234
2.17 Breaker Failure Protection 50BF.......................................................................................235
2.17.1 Functional Description...............................................................................................235
2.17.2 Setting Notes.............................................................................................................238
2.17.3 Settings.....................................................................................................................240
2.17.4 Information List.........................................................................................................241
2.18 Flexible Protection Functions...........................................................................................242
2.18.1 Functional Description...............................................................................................242
2.18.2 Setting Notes.............................................................................................................246
2.18.3 Settings.....................................................................................................................250
2.18.4 Information List.........................................................................................................252
2.19 Reverse-Power Protection Application with Flexible Protection Function...........................253
2.19.1 Functional Description...............................................................................................253
2.19.2 Implementation of the Reverse Power Protection....................................................... 256
2.19.3 Configuring the Reverse Power Protection in DIGSI.....................................................258
2.20 Synchrocheck................................................................................................................. 261
2.20.1 General..................................................................................................................... 261
2.20.2 Functional Sequence................................................................................................. 263
2.20.3 De-energized Switching.............................................................................................264
2.20.4 Direct Command / Blocking........................................................................................265
2.20.5 Interaction with Control, Automatic Reclosing and External Control............................265
Table of Contents
14 SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017