Siemens 7SR45 Argus User Manual page 6

3.16 Modes of Operation ......................................................................................................................... 41
3.16.1
3.16.2
3.16.3
3.16.4
3.16.5
3.16.6
3.17 Maintenance Mode .......................................................................................................................... 44
3.17.1
3.18 Self Monitoring ................................................................................................................................ 44
3.18.1
3.19 Data Storage ................................................................................................................................... 45
3.19.1
3.19.2
3.20 Real Time Clock .............................................................................................................................. 46
3.21 Operating Mode ............................................................................................................................... 46
3.22 Settings Groups ............................................................................................................................... 47
3.23 Password Feature............................................................................................................................ 47
3.24 Battery ............................................................................................................................................ 48
3.25 Firmware Update ............................................................................................................................. 48
List of Figures
Figure 1-1 Functional Diagram of 7SR45 Argus Relay .......................................................................................... 9
Figure 1-2 Terminal Diagram of Self Powered (7SR4501-xGA10-1AA0) and (7SR4503-xGA10-
1AA0) Non-Directional Overcurrent and Earth Fault Relay without Flag .............................................. 10
Figure 1-3 Terminal Diagram of Self Powered (7SR4501-xGB10-1AA0) and (7SR4503-xGB10-
1AA0) Non-Directional Overcurrent and Earth Fault Relay with Flag................................................... 11
Figure 1-4 Terminal Diagram of Dual Powered (7SR4501/7SR4503-x[H/J]B10-1AA0) Non-
Directional Overcurrent and Earth Fault Relay with Flag .................................................................... 11
Figure 1-5 Terminal Diagram of Dual Powered (7SR4502/7SR4504) Non-Directional Overcurrent
and Earth Fault Relay with Flag ........................................................................................................ 12
Figure 2-1 7SR45 Argus Relay Front Fascia with Flag Output ............................................................................ 13
Figure 2-2 7SR45 Argus Relay Front Fascia without Flag Output........................................................................ 14
Figure 2-3 7SR45 Argus Relay Connectors with 4 BI and 4 BO .......................................................................... 15
Figure 2-4 7SR45 Argus Relay Connectors with 2 BI and 2 BO .......................................................................... 16
Figure 2-5 7SR4501/7SR4502/7SR4503 Argus Self Powered Relay LED Indication Label .................................. 16
Figure 2-6 7SR4502/7SR4504 Argus Dual Powered Relay LED Indication Label (With Flag) ............................... 17
Figure 2-7 Warning Symbols ............................................................................................................................. 18
Figure 2-8 Relay LCD ....................................................................................................................................... 19
Figure 3-1 Logic Diagram: Instantaneous Overcurrent Element .......................................................................... 24
Figure 3-2 Logic Diagram: Time Delayed Overcurrent Element ........................................................................... 25
Figure 3-3 Logic Diagram: Instantaneous Derived Earth Fault Element ............................................................... 27
Figure 3-4 Logic Diagram: Time Delayed Derived Earth Fault Protection ............................................................ 28
Figure 3-5 Logic Diagram: Instantaneous Measured Earth-fault Element ............................................................ 30
Figure 3-6 Logic Diagram: Time Delayed Measured Earth Fault Element ............................................................ 31
Figure 3-7 Logic Diagram: 50LC Overcurrent Element ....................................................................................... 33
Figure 3-8 Operating Time for Switch-On-To fault with Binary Outputs ................................................................ 34
Figure 3-9 Operating Time for Switch-On-To fault with Pulse Output ................................................................... 34
Figure 3-10 Reset LEDs Outputs: Reydisp Software Input Matrix ......................................................................... 36
Figure 3-11 Reset Flags ...................................................................................................................................... 36
Figure 3-12 Binary Input Logic ............................................................................................................................. 37
Figure 3-13 Binary Output Logic .......................................................................................................................... 39
Figure 3-14 Sensitivity for Single Phase Fault with Binary Output ......................................................................... 42
Figure 3-15 Sensitivity for Single Phase Fault with Pulse Output .......................................................................... 42
©2018 Siemens Protection Devices Limited
Auxiliary Voltage ................................................................................................................ 41
CT Input ............................................................................................................................. 41
USB ................................................................................................................................... 43
Battery ............................................................................................................................... 43
Sleep Mode........................................................................................................................ 44
Low Battery Status Indication.............................................................................................. 44
Output Test ........................................................................................................................ 44
Internal Relay Failure (IRF) ................................................................................................. 44
Fault Records (Trip Log) ..................................................................................................... 45
Event Records (Event Log) ................................................................................................. 46
Chapter 1 - 7SR45 Description of Operation
Chapter 1 Page 3 of 48