7SR11 & 7SR12 Description Of Operation
©2012 Siemens Protection Devices Limited Chapter 1 Page 3 of 76
4.1.8 Extern Shots sub-menu........................................................................................................... 56
4.2 Manual CB Control................................................................................................................................ 59
4.3 Circuit Breaker (CB).............................................................................................................................. 59
4.4 Quick Logic ........................................................................................................................................... 62
Section 5: Supervision Functions........................................................................................................................... 64
5.1 Circuit Breaker Failure (50BF) .............................................................................................................. 64
5.2 VT Supervision (60VTS) – 7SR1205 & 7SR1206 ................................................................................. 65
5.3 CT Supervision (60CTS) ....................................................................................................................... 67
5.3.1 60CTS for 7SR11 (60CTS-I for 7SR12) .................................................................................. 67
5.3.2 60CTS for 7SR12.................................................................................................................... 67
5.4 Broken Conductor (46BC)..................................................................................................................... 68
5.5 Trip/ Close Circuit Supervision (74TCS & 74CCS) ............................................................................... 68
5.6 2nd Harmonic Block/Inrush Restraint (81HBL2) phase elements only.................................................. 70
Section 6: Other Features...................................................................................................................................... 71
6.1 Data Communications........................................................................................................................... 71
6.2 Maintenance ......................................................................................................................................... 71
6.2.1 Output Matrix Test .................................................................................................................. 71
6.2.2 CB Counters ........................................................................................................................... 71
6.2.3 I
2
t CB Wear ............................................................................................................................. 71
6.3 Data Storage......................................................................................................................................... 71
6.3.1 General ................................................................................................................................... 71
6.3.2 Demand .................................................................................................................................. 72
6.3.3 Event Records ........................................................................................................................ 72
6.3.4 Waveform Records. ................................................................................................................ 72
6.3.5 Fault Records.......................................................................................................................... 73
6.3.6 Energy Storage - 7SR12......................................................................................................... 73
6.4 Metering ................................................................................................................................................ 74
6.5 Operating Mode .................................................................................................................................... 75
6.6 Control Mode ........................................................................................................................................ 75
6.7 Real Time Clock.................................................................................................................................... 75
6.7.1 Time Synchronisation – Data Communication Interface ......................................................... 76
6.7.2 Time Synchronisation – Binary Input ...................................................................................... 76
6.8 Settings Groups .................................................................................................................................... 76
6.9 Password Feature................................................................................................................................. 76
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