6.12.4 Stage with Inverse-Time Characteristic Curve............................................................. 527
6.12.4.1 Description ......................................................................................................... 527
6.12.4.2 Application and Setting Notes ............................................................................. 528
6.12.4.3 Settings............................................................................................................... 529
6.12.4.4 Information List................................................................................................... 530
6.12.5 Stage with User-Defined Characteristic Curve.............................................................530
6.12.5.1 Description ......................................................................................................... 530
6.12.5.2 Application and Setting Notes ............................................................................. 531
6.12.5.3 Settings............................................................................................................... 532
6.12.5.4 Information List................................................................................................... 533
6.12.6 Fast Stage................................................................................................................. 533
6.12.6.1 Description ......................................................................................................... 533
6.12.6.2 Application and Setting Notes ............................................................................. 534
6.12.6.3 Settings............................................................................................................... 535
6.12.6.4 Information List................................................................................................... 535
6.12.7 Application Example: High-Impedance Restricted Ground-Fault Protection..................535
6.12.7.1 Description ......................................................................................................... 535
6.12.7.2 Application and Setting Notes ............................................................................. 537
6.12.8 Application Example: Tank Leakage Protection........................................................... 541
6.12.8.1 Description ......................................................................................................... 541
6.12.8.2 Application and Setting Notes ............................................................................. 542
6.13 Non-Directional Intermittent Ground-Fault Protection......................................................543
6.13.1 Overview of Functions...............................................................................................543
6.13.2 Structure of the Function...........................................................................................543
6.13.3 Stage Description...................................................................................................... 544
6.13.4 Application and Setting Notes....................................................................................548
6.13.5 Settings.....................................................................................................................549
6.13.6 Information List.........................................................................................................550
6.14 Directional Intermittent Ground-Fault Protection............................................................. 551
6.14.1 Overview of Functions...............................................................................................551
6.14.2 Structure of the Function...........................................................................................551
6.14.3 Stage Description...................................................................................................... 552
6.14.4 Application and Setting Notes....................................................................................558
6.14.5 Settings.....................................................................................................................560
6.14.6 Information List.........................................................................................................561
6.15 Sensitive Ground-Fault Detection.................................................................................... 562
6.15.1 Overview of Functions...............................................................................................562
6.15.2 Structure of the Function...........................................................................................562
6.15.3 General Functionality................................................................................................ 564
6.15.3.1 Description.......................................................................................................... 564
6.15.3.2 Application and Setting Notes.............................................................................. 567
6.15.3.3 Parameter............................................................................................................ 567
6.15.3.4 Informationen......................................................................................................568
6.15.4 Directional 3I0 Stage with Cos φ or Sin φ Measurement............................................. 568
6.15.4.1 Description.......................................................................................................... 568
6.15.4.2 Application and Setting Notes.............................................................................. 574
6.15.4.3 Settings............................................................................................................... 576
6.15.4.4 Information List................................................................................................... 577
6.15.5 Directional Transient Ground-Fault Stage................................................................... 578
6.15.5.1 Description ......................................................................................................... 578
6.15.5.2 Application and Setting Notes.............................................................................. 582
6.15.5.3 Settings............................................................................................................... 584
Table of Contents
18 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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