Siemens 6MD86 - Page 19

7.6.10 Application Notes for Directional Comparison Protection ........................................... 698
7.7 Directional Overcurrent Protection, Ground..................................................................... 700
7.7.1 Overview of Functions...............................................................................................700
7.7.2 Structure of the Function...........................................................................................700
7.7.3 General Functionality................................................................................................ 702
7.7.3.1 Measured-Value Selection.................................................................................... 702
7.7.3.2 Direction Determination.......................................................................................703
7.7.3.3 Application and Setting Notes.............................................................................. 705
7.7.3.4 Settings............................................................................................................... 707
7.7.3.5 Information List................................................................................................... 708
7.7.4 Stage Control............................................................................................................ 708
7.7.4.1 Description.......................................................................................................... 708
7.7.4.2 Application and Setting Notes.............................................................................. 708
7.7.5 Stage with Definite-Time Characteristic Curve............................................................ 710
7.7.5.1 Description.......................................................................................................... 710
7.7.5.2 Application and Setting Notes.............................................................................. 713
7.7.5.3 Settings............................................................................................................... 715
7.7.5.4 Information List................................................................................................... 718
7.7.6 Stage with Inverse-Time Characteristic Curve............................................................. 719
7.7.6.1 Description.......................................................................................................... 719
7.7.6.2 Application and Setting Notes.............................................................................. 723
7.7.6.3 Settings............................................................................................................... 726
7.7.6.4 Information List................................................................................................... 728
7.7.7 Stage with Inverse-Time Overcurrent Protection with Logarithmic-Inverse Char-
acteristic Curve..........................................................................................................730
7.7.7.1 Description.......................................................................................................... 730
7.7.7.2 Application and Setting Notes.............................................................................. 732
7.7.7.3 Settings............................................................................................................... 733
7.7.7.4 Information List................................................................................................... 735
7.7.8 Stage with Knee-Point Characteristic Curve................................................................ 736
7.7.8.1 Description.......................................................................................................... 736
7.7.8.2 Application and Setting Notes.............................................................................. 737
7.7.8.3 Settings............................................................................................................... 738
7.7.8.4 Information List................................................................................................... 739
7.7.9 Stage with User-Defined Characteristic Curve............................................................. 740
7.7.9.1 Description.......................................................................................................... 740
7.7.9.2 Application and Setting Notes.............................................................................. 741
7.7.9.3 Settings............................................................................................................... 742
7.7.9.4 Information List................................................................................................... 745
7.7.10 Influence of Other Functions via Dynamic Settings.....................................................745
7.8 Overcurrent Protection, 1-Phase...................................................................................... 746
7.8.1 Function Overview ....................................................................................................746
7.8.2 Structure of the Function .......................................................................................... 746
7.8.3 Stage with Definite-Time Characteristic Curve............................................................ 748
7.8.3.1 Description ......................................................................................................... 748
7.8.3.2 Application and Setting Notes ............................................................................. 749
7.8.3.3 Settings............................................................................................................... 750
7.8.3.4 Information List................................................................................................... 750
7.8.4 Stage with Inverse-Time Characteristic Curve............................................................. 752
7.8.4.1 Description ......................................................................................................... 752
7.8.4.2 Application and Setting Notes ............................................................................. 753
7.8.4.3 Settings............................................................................................................... 754
7.8.4.4 Information List................................................................................................... 755
Table of Contents
SIPROTEC 5, High-Voltage Bay Controller, Manual 19
C53000-G5040-C015-9, Edition 11.2017