Functions Available In The 7Sr45 Device - Siemens Reyrolle 7SR45 Argus Device Manual

Functions

3.1 Functions Available in the 7SR45 Device

3.1

Functions Available in the 7SR45 Device

This section describes the functions available in the 7SR45 device. The relay provides protection functions and
supervision functions as described below.
Protection Functions
•
Instantaneous overcurrent protection (50)
•
Time‑delayed overcurrent protection (51)
•
Instantaneous derived earth fault protection (50N)
•
Time‑delayed derived earth fault protection (51N)
•
Instantaneous measured earth fault protection (50G)
•
Time‑delayed measured earth fault protection (51G)
•
Switch-On-To-Fault (50LC/SOTF)
•
Thermal overload protection (49)
Supervision Functions
•
2nd Harmonic block/inrush restraint (81HBL2)
40 Reyrolle, 7SR45, Device Manual
C53000-G7040-C101-2, Edition 09.2020