Siemens SIPROTEC 4 7SD80

2.8 Undervoltage and Overvoltage Protection (optional) 27/59..............................................108
2.8.1 Overvoltage Protection (ANSI 59)...............................................................................108
2.8.2 Undervoltage Protection (ANSI 27)............................................................................ 112
2.8.3 Setting Notes.............................................................................................................115
2.8.4 Settings.....................................................................................................................117
2.8.5 Information List.........................................................................................................119
2.9 Frequency Protection (optional) 81................................................................................. 123
2.9.1 Functional Description...............................................................................................123
2.9.2 Setting Notes.............................................................................................................125
2.9.3 Settings.....................................................................................................................127
2.9.4 Information List.........................................................................................................127
2.10 Direct Local Trip.............................................................................................................. 129
2.10.1 Functional Description...............................................................................................129
2.10.2 Setting Notes.............................................................................................................129
2.10.3 Settings.....................................................................................................................130
2.10.4 Information List.........................................................................................................130
2.11 Automatic Reclosure Function (optional) 79.................................................................... 131
2.11.1 Functional Description...............................................................................................131
2.11.2 Setting Notes.............................................................................................................136
2.11.3 Settings.....................................................................................................................139
2.11.4 Information List.........................................................................................................140
2.12 Circuit Breaker Test......................................................................................................... 142
2.12.1 CB Close Detection.................................................................................................... 142
2.12.2 Circuit-Breaker Position Detection.............................................................................. 144
2.12.3 Circuit-Breaker Test....................................................................................................146
2.12.4 Information List.........................................................................................................146
2.13 Direct Remote Trip and Transmission of Binary Information..............................................147
2.13.1 Functional Description...............................................................................................147
2.13.2 Information List.........................................................................................................147
2.14 Monitoring Functions......................................................................................................149
2.14.1 Measurement Supervision......................................................................................... 149
2.14.1.1 Hardware Monitoring...........................................................................................149
2.14.1.2 Software Monitoring ........................................................................................... 150
2.14.1.3 External Transformer Circuits............................................................................... 150
2.14.1.4 Fault Responses................................................................................................... 158
2.14.1.5 Setting Notes....................................................................................................... 159
2.14.1.6 Settings............................................................................................................... 160
2.14.1.7 Information List................................................................................................... 161
2.14.2 74TC Trip Circuit Supervision..................................................................................... 162
2.14.2.1 Functional Description......................................................................................... 162
2.14.2.2 Setting Notes....................................................................................................... 165
2.14.2.3 Settings............................................................................................................... 165
2.14.2.4 Information List................................................................................................... 165
2.15 Flexible Protection Functions...........................................................................................167
2.15.1 Functional Description...............................................................................................167
2.15.2 Setting Notes.............................................................................................................170
2.15.3 Settings.....................................................................................................................174
2.15.4 Information List.........................................................................................................175
Table of Contents
SIPROTEC 4, 7SD80, Manual 13
E50417-G1100-C474-A2, Edition 02.2018