Siemens SIPROTEC 4 Manual page 12

Table of Contents
2.2
2.2.1
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
2.3
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
2.6.6
12
Overcurrent Protection 50, 51, 50N, 51N.......................................................................... 56
General ...................................................................................................................... 56
Definite Time, High-set Elements 50-3, 50-2, 50N-3, 50N-2..........................................57
Definite Time Overcurrent Elements 50-1, 50N-1......................................................... 59
Inverse Time Overcurrent Elements 51, 51N ................................................................62
Inverse Time Overcurrent Protection 51V (Voltage-controlled / Voltagerestraint)...........65
Dynamic Cold Load Pickup Function............................................................................. 67
Inrush Restraint .......................................................................................................... 68
Pickup Logic and Tripping Logic................................................................................... 69
Two-phase Overcurrent Protection (Only Non-Directional) ...........................................70
Fast Busbar Protection Using Reverse Interlocking ....................................................... 71
Setting Notes...............................................................................................................72
Settings.......................................................................................................................77
Information List........................................................................................................... 79
Directional Overcurrent Protection 67, 67N....................................................................... 82
General....................................................................................................................... 82
Definite Time Directional High-set Elements 67-2, 67N-2, 67-3, 67N-3......................... 84
Definite Time, Directional Time Overcurrent Elements 67-1, 67N-1...............................85
Inverse Time, Directional Overcurrent Elements 67-TOC, 67N-TOC............................... 88
Interaction with Fuse Failure Monitor (FFM).................................................................89
Dynamic Cold Load Pickup Function............................................................................. 90
Inrush Restraint........................................................................................................... 90
Determination of Direction.......................................................................................... 90
Reverse Interlocking for Double End Fed Lines..............................................................94
Setting Notes...............................................................................................................95
Settings.....................................................................................................................101
Information List......................................................................................................... 104
Dynamic Cold Load Pickup...............................................................................................106
Functional Description............................................................................................... 106
Setting Notes.............................................................................................................108
Settings.....................................................................................................................109
Information List......................................................................................................... 111
Single-Phase Overcurrent Protection................................................................................112
Functional Description............................................................................................... 112
High-impedance Ground Fault Unit Protection........................................................... 113
Tank Leakage Protection............................................................................................ 115
Setting Notes.............................................................................................................116
Settings.....................................................................................................................121
Information List......................................................................................................... 121
Voltage Protection 27, 59................................................................................................122
Measurement Principle.............................................................................................. 122
Overvoltage Protection 59......................................................................................... 123
Undervoltage Protection 27....................................................................................... 124
Setting Notes.............................................................................................................127
Settings.....................................................................................................................130
Information List......................................................................................................... 131
SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017