Siemens 7SR21 Manual page 3

5.2 VT Supervision (60VTS) - 7SR22 ........................................................................................................ 61
5.3 CT Supervision (60CTS & 60CTS-I) ..................................................................................................... 63
5.4 (60CTS-I) - 7SR21 & 7SR22 ................................................................................................................ 63
5.5 (60CTS) - 7SR22 ................................................................................................................................. 63
5.6 Broken Conductor (46BC)..................................................................................................................... 64
5.7 Trip Circuit Supervision (74TCS) .......................................................................................................... 64
5.8 Inrush Restraint (81HBL2) .................................................................................................................... 65
Section 6: Other Features ...................................................................................................................................... 66
6.1 Data Communications........................................................................................................................... 66
6.2 CB Maintenance ................................................................................................................................... 66
6.2.1 Output Matrix Test .................................................................................................................. 66
6.3 Data Storage......................................................................................................................................... 67
6.3.1 General ................................................................................................................................... 67
6.3.2 Demand / Data Log................................................................................................................. 67
6.3.3 Event Records ........................................................................................................................ 67
6.3.4 Waveform Records. ................................................................................................................ 68
6.3.5 Fault Records.......................................................................................................................... 68
6.4 Metering ................................................................................................................................................ 68
6.5 Operating Mode .................................................................................................................................... 69
6.6 Control Mode ........................................................................................................................................ 69
6.7 Real Time Clock.................................................................................................................................... 70
6.7.1 Time Synchronisation - Data Communication Interface .......................................................... 70
6.7.2 Time Synchronisation - Binary Input ...................................................................................... 70
6.7.3 Time Synchronisation - IRIG-B (Optional) .............................................................................. 70
6.8 Settings Groups .................................................................................................................................... 70
6.9 Password Feature ................................................................................................................................. 71
©2010 Siemens Protection Devices Limited
7SR21 & 7SR22 Argus Description of Operation
Chapter 1 Page 3 of 71