Siemens 7SR224 Technical Manual page 229

3.2 Voltage Transformer Supervision (60VTS)...........................................................................55
3.2.1 1 or 2 Phase VT fail....................................................................................................55
3.2.2 3 Phase VT fail ...........................................................................................................56
3.3 Bus Voltage Transformer Fail (60VTF-Bus) .........................................................................57
3.4 Current Transformer Supervision (60CTS)...........................................................................58
3.5 Broken Conductor (46BC).....................................................................................................60
3.6 Trip Circuit Supervision (74TCS) ..........................................................................................62
3.7 Magnetising Inrush Detector (81HBL2) ................................................................................63
Section 4: Control & Logic Functions ................................................................................................64
4.1 Autoreclose (79)......................................................................................................................64
4.2 Synchronising..........................................................................................................................64
4.3 Loss of Voltage (LOV) Loop Automation Function .................................................................65
4.4 Quick Logic .............................................................................................................................66
Section 5: Testing and Maintenance ..................................................................................................67
5.1 Periodic Tests .........................................................................................................................67
5.2 Maintenance............................................................................................................................67
5.3 Troubleshooting ......................................................................................................................68
Defect Report Form..............................................................................................................................69
Section 6: Relay Software Upgrade Instructions ..............................................................................71
6.1 General ...................................................................................................................................71
6.2 Replacing firmware on a product installed on site ..................................................................71
6.2.1 Identify Which Software Is Currently Loaded.............................................................71
6.2.2 Overall Software Information......................................................................................71
6.2.3 Product Configuration Information .............................................................................71
6.2.4 Things To Do Before Loading New Firmware/Software ............................................72
6.3 Loading code using front usb port ..........................................................................................72
6.3.1 Solving Software Upload Problems ...........................................................................73
©2010 Siemens Protection Devices Limited
7SR224 Argus Commissioning & Maintenance Guide
Chapter 6 Page 3 of 73