Siemens SIPROTEC 4 7SJ61 Manual page 10

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
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.4
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.4.6
2.5
2.5.1
2.5.2
2.5.3
2.5.4
2.5.5
2.6
2.6.1
2.6.1.1
2.6.1.2
2.6.2
2.6.2.1
2.6.2.2
2.6.3
2.6.3.1
2.6.3.2
2.6.4
2.6.4.1
2.6.4.2
2.7
2.7.1
2.7.2
2.7.3
2.7.4
10
Definite Time, High-set Elements 50-3, 50-2, 50N-3, 50N-2..........................................47
Definite Time Overcurrent Elements 50-1, 50N-1......................................................... 49
Inverse Time Overcurrent Elements 51, 51N ................................................................52
Dynamic Cold Load Pickup Function............................................................................. 55
Inrush Restraint .......................................................................................................... 55
Pickup Logic and Tripping Logic................................................................................... 57
Two-phase Overcurrent Protection (Only Non-Directional) ...........................................58
Fast Busbar Protection Using Reverse Interlocking ....................................................... 59
Setting Notes...............................................................................................................59
Settings.......................................................................................................................67
Information List........................................................................................................... 69
Dynamic Cold Load Pickup.................................................................................................72
Description.................................................................................................................. 72
Setting Notes...............................................................................................................74
Settings.......................................................................................................................75
Information List........................................................................................................... 76
Single-Phase Overcurrent Protection..................................................................................77
Description.................................................................................................................. 77
High-impedance Ground Fault Unit Protection............................................................. 78
Tank Leakage Protection.............................................................................................. 80
Setting Notes...............................................................................................................81
Settings.......................................................................................................................86
Information List........................................................................................................... 86
Negative Sequence Protection 46...................................................................................... 87
Definite Time characteristic .........................................................................................87
Inverse Time characteristic 46-TOC.............................................................................. 88
Setting Notes...............................................................................................................90
Settings.......................................................................................................................92
Information List........................................................................................................... 93
Motor Protection...............................................................................................................94
Motor Starting Protection 48........................................................................................94
Description............................................................................................................ 94
Setting Notes......................................................................................................... 97
Motor Restart Inhibit 66............................................................................................... 98
Description............................................................................................................ 99
Setting Notes....................................................................................................... 103
Load Jam Protection (51M)........................................................................................ 107
Description.......................................................................................................... 107
Setting Notes....................................................................................................... 109
Motorprotection (Motor Starting Protection 48, Motor Restart Inhibit 66, LoadJam)....111
Settings............................................................................................................... 111
Information List................................................................................................... 112
Thermal Overload Protection 49...................................................................................... 113
Description................................................................................................................ 113
Setting Notes.............................................................................................................115
Settings.....................................................................................................................119
Information List......................................................................................................... 120
SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016