Siemens SIPROTEC 4 - Page 10

2.2.2 Definite Time, High-set Elements 50-3, 50-2, 50N-3, 50N-2..........................................58
2.2.3 Definite Time Overcurrent Elements 50-1, 50N-1......................................................... 60
2.2.4 Inverse Time Overcurrent Elements 51, 51N ................................................................63
2.2.5 Inverse Time Overcurrent Protection 51V (Voltage-controlled / Voltagerestraint)...........66
2.2.6 Dynamic Cold Load Pickup Function.............................................................................68
2.2.7 Inrush Restraint .......................................................................................................... 69
2.2.8 Pickup Logic and Tripping Logic................................................................................... 70
2.2.9 Two-phase Overcurrent Protection (Only Non-Directional) ...........................................71
2.2.10 Fast Busbar Protection Using Reverse Interlocking ....................................................... 72
2.2.11 Setting Notes...............................................................................................................73
2.2.12 Settings.......................................................................................................................80
2.2.13 Information List...........................................................................................................83
2.3 Directional Overcurrent Protection 67, 67N....................................................................... 85
2.3.1 General....................................................................................................................... 85
2.3.2 Definite Time Directional High-set Elements 67-2, 67N-2, 67-3, 67N-3......................... 87
2.3.3 Definite Time, Directional Time Overcurrent Elements 67-1, 67N-1...............................88
2.3.4 Inverse Time, Directional Time Overcurrent Elements 67-TOC, 67N-TOC ...................... 91
2.3.5 Interaction with Fuse Failure Monitor (FFM).................................................................92
2.3.6 Dynamic Cold Load Pickup Function.............................................................................93
2.3.7 Inrush Restraint........................................................................................................... 93
2.3.8 Determination of Direction.......................................................................................... 93
2.3.9 Reverse Interlocking for Double End Fed Lines..............................................................97
2.3.10 Setting Notes...............................................................................................................98
2.3.11 Settings.....................................................................................................................106
2.3.12 Information List.........................................................................................................109
2.4 Dynamic Cold Load Pickup...............................................................................................111
2.4.1 Description................................................................................................................111
2.4.2 Setting Notes.............................................................................................................113
2.4.3 Settings.....................................................................................................................114
2.4.4 Information List.........................................................................................................116
2.5 Single-Phase Overcurrent Protection................................................................................117
2.5.1 Description................................................................................................................117
2.5.2 High-impedance Ground Fault Unit Protection........................................................... 118
2.5.3 Tank Leakage Protection............................................................................................120
2.5.4 Setting Notes.............................................................................................................121
2.5.5 Settings.....................................................................................................................126
2.5.6 Information List.........................................................................................................126
2.6 Voltage Protection 27, 59................................................................................................127
2.6.1 Measurement Principle.............................................................................................. 127
2.6.2 Overvoltage Protection 59......................................................................................... 128
2.6.3 Undervoltage Protection 27....................................................................................... 129
2.6.4 Setting Notes.............................................................................................................132
2.6.5 Settings.....................................................................................................................135
2.6.6 Information List.........................................................................................................136
2.7 Negative Sequence Protection 46....................................................................................137
2.7.1 Definite Time characteristic .......................................................................................137
Table of Contents
10 SIPROTEC 4, 7SJ62/64, Manual
C53000-G1140-C207-8, Edition 08.2016