Siemens Argus 7SR21 Technical Manual page 8

7SR210 & 7SR220 Description of Operation
4.7 Extern Shots Sub-Menu .................................................................................................................. 63
4.8 Manual Control................................................................................................................................ 65
4.9 Synchronising ................................................................................................................................. 66
4.9.1 Reclosure Modes ............................................................................................................... 66
4.9.2 Charge Delays ................................................................................................................... 66
4.9.3 Voltage monitoring elements .............................................................................................. 66
4.9.4 Check Synchronising Mode ................................................................................................ 68
4.9.5 System Split Detector ........................................................................................................ 69
4.9.6 System Sync Reversion ..................................................................................................... 69
4.9.7 System Synchronising Mode .............................................................................................. 70
4.9.8 Close on Zero Mode .......................................................................................................... 70
4.10 Live/Dead Indication ........................................................................................................................ 71
4.11 Circuit Breaker ................................................................................................................................ 72
4.12 Quick Logic ..................................................................................................................................... 75
Section 5: Supervision Functions ..................................................................................................................... 77
5.1 Circuit Breaker Failure (50BF) ......................................................................................................... 77
5.2 VT Supervision (60VTS) - 7SR22 .................................................................................................... 78
5.3 Busbar VT Fail (60VTF-Bus) - 7SR22 ............................................................................................. 79
5.4 CT Supervision (60CTS & 60CTS-I) ................................................................................................. 80
5.4.1 (60CTS-I) - 7SR21 & 7SR22 ............................................................................................. 80
5.4.2 (60CTS) - 7SR22 .............................................................................................................. 80
5.5 Broken Conductor (46BC) ............................................................................................................... 81
5.6 Trip / Close Circuit Supervision (74TCS & 74CCS) ........................................................................... 81
5.7 Inrush Restraint (81HBL2) ............................................................................................................... 82
5.8 Over Fluxing Detector (81HLB5) ...................................................................................................... 83
5.9 Load Blinder (21) ............................................................................................................................ 84
5.9.1 Load Blinder (21) Three-Phase .......................................................................................... 84
5.9.2 Load Blinder (21) Single-Phase. ......................................................................................... 85
Section 6: Other Features ................................................................................................................................ 87
6.1 Data Communications ..................................................................................................................... 87
6.2 Maintenance ................................................................................................................................... 87
6.2.1 I 2 t CB Wear ....................................................................................................................... 88
6.2.2 Output Matrix Test ............................................................................................................. 88
6.3 Data Storage................................................................................................................................... 89
6.3.1 General ............................................................................................................................. 89
6.3.2 Event Records ................................................................................................................... 89
6.3.3 Waveform Records. ........................................................................................................... 89
6.3.4 Fault Records .................................................................................................................... 90
6.3.5 Demand ............................................................................................................................ 90
6.3.6 Data Log ........................................................................................................................... 90
6.3.7 Energy Storage ................................................................................................................. 91
6.3.8 Fault Locator ..................................................................................................................... 92
6.4 Metering ......................................................................................................................................... 92
6.5 Operating Mode .............................................................................................................................. 93
6.6 Control Mode .................................................................................................................................. 93
6.7 Real Time Clock .............................................................................................................................. 93
6.7.1 Time Synchronisation - Data Communication Interface ....................................................... 94
6.7.2 Time Synchronisation - Binary Input .................................................................................. 94
6.7.3 Time Synchronisation - IRIG-B (Optional) .......................................................................... 94
6.8 Settings Groups .............................................................................................................................. 94
6.9 Password Feature ........................................................................................................................... 94
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