Siemens 7SC80 Manual page 12

Table of Contents
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
2.2.7
2.2.8
2.2.9
2.2.10
2.2.11
2.2.12
2.2.13
2.2.14
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.3.8
2.3.9
2.3.10
2.3.11
2.3.12
2.4
2.4.1
2.4.2
2.4.3
2.4.4
2.5
2.5.1
2.5.2
2.5.3
2.5.4
2.5.5
2.5.6
2.6
2.6.1
2.6.2
2.6.3
2.6.4
2.6.5
12
Definite Time, High-set Elements 50-3, 50-2, 50N-3, 50N-2..........................................71
Definite Time Overcurrent Elements 50-1, 50N-1......................................................... 72
Inverse Time Overcurrent Elements 51, 51N ................................................................74
Inverse Time Overcurrent Elements 51-1, 51-2, 51-3, 51-4 and 51N-1, 51N-2,
51N-3, 51N-4.............................................................................................................. 78
Inverse Time Overcurrent Protection 51V (Voltage-Controlled/Voltage-Restraint).......... 81
Special Variant Function 50-1, 50N-1 for Service Interlocking....................................... 84
Dynamic Cold Load Pickup Function............................................................................. 85
Inrush Restraint .......................................................................................................... 85
Pickup Logic and Tripping Logic................................................................................... 85
Two-phase Overcurrent Protection (Only Non-Directional) ...........................................87
Setting Notes...............................................................................................................87
Settings.......................................................................................................................96
Information List......................................................................................................... 107
Directional Overcurrent Protection 67, 67N..................................................................... 111
General..................................................................................................................... 111
Directional Definite Time High-Current Elements 67-2, 67-3, 67N-2 and 67N-3...........112
Definite Time, Directional Time Overcurrent Elements 67-1, 67N-1.............................113
Inverse Time, Directional Time Overcurrent Elements 67-TOC, 67N-TOC..................... 115
Inverse Time, Directional Time Overcurrent Elements 67-TOC-1, 67-TOC-2, 67-
TOC-3, 67-TOC-4 and 67N-TOC-1, 67N-TOC-2, 67N-TOC-3, 67N-TOC-4.......................117
Interaction with Voltage Monitoring ..........................................................................121
Dynamic Cold Load Pickup Function........................................................................... 121
Inrush Restraint......................................................................................................... 121
Determination of Direction........................................................................................ 121
Setting Notes.............................................................................................................125
Settings.....................................................................................................................134
Information List......................................................................................................... 147
Dynamic Cold Load Pickup...............................................................................................151
Description................................................................................................................ 151
Setting Notes.............................................................................................................153
Settings.....................................................................................................................157
Information List......................................................................................................... 165
Single-Phase Overcurrent Protection................................................................................166
Description................................................................................................................ 166
High-Impedance Ground Fault Unit Protection........................................................... 167
Tank Leakage Protection............................................................................................ 169
Setting Notes.............................................................................................................170
Settings.....................................................................................................................175
Information List......................................................................................................... 186
Voltage Protection 27, 59................................................................................................187
Measurement Principle.............................................................................................. 187
Overvoltage Protection 59......................................................................................... 189
Undervoltage Protection 27....................................................................................... 189
Displacement Voltage Protection............................................................................... 192
Setting Notes.............................................................................................................194
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017