Siemens 7SC80 - Page 13

2.6.6 Settings.....................................................................................................................198
2.6.7 Information List.........................................................................................................199
2.7 47 Negative Phase Sequence Overvoltage....................................................................... 202
2.7.1 Description................................................................................................................202
2.7.2 Setting Notes.............................................................................................................202
2.7.3 Settings.....................................................................................................................203
2.7.4 Information List.........................................................................................................203
2.8 27/59 Under/Over Voltage for Vx.....................................................................................204
2.8.1 Description................................................................................................................204
2.8.2 Setting Notes.............................................................................................................205
2.8.3 Settings.....................................................................................................................206
2.8.4 Information List.........................................................................................................207
2.9 Negative Sequence Protection 46....................................................................................208
2.9.1 Definite Time characteristic .......................................................................................208
2.9.2 Inverse Time characteristic 46-TOC............................................................................ 208
2.9.3 Setting Notes.............................................................................................................211
2.9.4 Settings.....................................................................................................................213
2.9.5 Information List.........................................................................................................214
2.10 Frequency Protection 81 O/U...........................................................................................215
2.10.1 Description................................................................................................................215
2.10.2 Setting Notes.............................................................................................................216
2.10.3 Settings.....................................................................................................................217
2.10.4 Information List.........................................................................................................218
2.11 Thermal Overload Protection 49...................................................................................... 219
2.11.1 Monitoring of the thermal condition, for example at transformers..............................219
2.11.2 Setting Notes.............................................................................................................221
2.11.3 Settings.....................................................................................................................223
2.11.4 Information List.........................................................................................................224
2.12 Monitoring Functions......................................................................................................225
2.12.1 Measurement Supervision......................................................................................... 225
2.12.1.1 General................................................................................................................225
2.12.1.2 Hardware Monitoring .......................................................................................... 225
2.12.1.3 Software Monitoring ........................................................................................... 227
2.12.1.4 Monitoring of the Transformer Circuits................................................................. 227
2.12.1.5 Broken Conductor Detection.................................................................................229
2.12.1.6 Inrush-Current Detection .....................................................................................231
2.12.1.7 Current and Voltage Transformer Monitoring........................................................234
2.12.1.8 Setting Notes....................................................................................................... 236
2.12.1.9 Settings............................................................................................................... 240
2.12.1.10 Information List................................................................................................... 241
2.12.2 Trip Circuit Supervision 74TC..................................................................................... 242
2.12.2.1 Description.......................................................................................................... 243
2.12.2.2 Setting Notes....................................................................................................... 245
2.12.2.3 Settings............................................................................................................... 246
2.12.2.4 Information List................................................................................................... 246
2.12.3 Malfunction Responses of the Monitoring Functions.................................................. 246
2.12.3.1 Description.......................................................................................................... 246
2.13 Ground Fault Protection 64, 67N(s), 50N(s), 51N(s).........................................................248
2.13.1 Ground Fault Detection for cos-φ–/sin-φ Measurement (Standard Method)................ 248
Table of Contents
SIPROTEC Compact, 7SC80, Manual 13
E50417-G1140-C486-A8, Edition 07.2017