Siemens SIPROTEC 4 - Page 12

2.13 Ground Fault Protection 64, 67N(s), 50N(s), 51N(s).........................................................200
2.13.1 Ground Fault Detection for cos-ϕ / sin-ϕ Measurement (Standard Method)..................200
2.13.2 Ground Fault Detection for V0/I0-ϕ Measurement.......................................................206
2.13.3 Ground Fault Location............................................................................................... 211
2.13.4 Setting Notes.............................................................................................................212
2.13.5 Settings.....................................................................................................................221
2.13.6 Information List.........................................................................................................223
2.14 Intermittent Ground Fault Protection...............................................................................225
2.14.1 Description................................................................................................................225
2.14.2 Setting Notes.............................................................................................................228
2.14.3 Settings.....................................................................................................................229
2.14.4 Information List.........................................................................................................230
2.15 Dir. Intermittent earth fault protection............................................................................ 231
2.15.1 Description................................................................................................................231
2.15.2 Setting Notes.............................................................................................................234
2.15.3 Settings.....................................................................................................................235
2.15.4 Information List.........................................................................................................235
2.16 Automatic Reclosing System 79.......................................................................................236
2.16.1 Program Execution.................................................................................................... 236
2.16.2 Blocking.................................................................................................................... 240
2.16.3 Status Recognition and Monitoring of the Circuit Breaker........................................... 242
2.16.4 Controlling Protection Elements.................................................................................243
2.16.5 Zone Sequencing / Fuse Saving Scheme..................................................................... 245
2.16.6 Setting Notes.............................................................................................................246
2.16.7 Settings.....................................................................................................................251
2.16.8 Information List.........................................................................................................258
2.17 Fault Locator...................................................................................................................260
2.17.1 Description................................................................................................................260
2.17.2 Setting Notes.............................................................................................................261
2.17.3 Settings.....................................................................................................................262
2.17.4 Information List.........................................................................................................262
2.18 Breaker Failure Protection 50BF.......................................................................................263
2.18.1 Description................................................................................................................263
2.18.2 Setting Notes.............................................................................................................266
2.18.3 Settings.....................................................................................................................268
2.18.4 Information List.........................................................................................................269
2.19 Flexible Protection Functions...........................................................................................270
2.19.1 Functional Description...............................................................................................270
2.19.2 Setting Notes.............................................................................................................273
2.19.3 Settings.....................................................................................................................278
2.19.4 Information List.........................................................................................................280
2.20 Reverse-Power Protection Application with Flexible Protection Function...........................281
2.20.1 Description................................................................................................................281
2.20.2 Implementation of the Reverse Power Protection....................................................... 284
2.20.3 Configuring the Reverse Power Protection in DIGSI.....................................................286
Table of Contents
12 SIPROTEC 4, 7SJ62/64, Manual
C53000-G1140-C207-8, Edition 08.2016