Siemens Reyrolle 7SR46 Manual page 10

Table of Contents
4.5
4.6
4.7
5 Applications................................................................................................................................................ 69
5.1
5.2
5.2.1
5.3
5.4
5.4.1
5.4.2
5.5
5.6
5.7
5.7.1
5.7.2
Index...........................................................................................................................................................83
10
51N Time-Delayed Earth Fault - Derived............................................................................66
50LC/SOTF Switch onto Fault............................................................................................ 67
81HBL2 2 nd Harmonic Block/Inrush Restraint......................................................................68
Overview ......................................................................................................................... 70
Specific CTs.......................................................................................................................71
Overview.....................................................................................................................71
Time-Delayed Overcurrent (51/51N) ................................................................................. 74
Overcurrent Characteristics............................................................................................... 76
Selection of Overcurrent Characteristics ...................................................................... 76
Reset Delay .................................................................................................................76
Instantaneous Overcurrent (50/50N) ................................................................................ 77
Inrush Detector (81HBL2) ................................................................................................. 78
Connection Examples........................................................................................................79
Connection Examples for RMU Application................................................................... 79
Connection Examples for Distribution Transformer Application.....................................80
Reyrolle, 7SR46 Device, Manual
C53000-G7040-C103-1, Edition 10.2022