Siemens 7SR224 - Page 4

(1) Description of Operation 7SR224
Page 4 of 66 ©2009 Siemens Protection Devices Limited
3.11
Voltage Protection: Negative Phase Sequence Overvoltage (47)..........................................37
3.12 Voltage Protection: Neutral Overvoltage (59N) ......................................................................38
3.13 Voltage Protection: Under/Over Frequency (81) ....................................................................39
Section 4: Control & Logic Functions................................................................................................40
4.1 Auto-Reclose (79) ...................................................................................................................40
4.1.1 Overview ....................................................................................................................40
Auto Reclose sequences ........................................................................................................42
4.1.2 AUTORECLOSE PROT’N Menu................................................................................43
4.1.3 AUTORECLOSE CONFIG Menu ...............................................................................43
4.1.4 P/F SHOTS sub-menu ...............................................................................................45
4.1.5 E/F SHOTS sub-menu ...............................................................................................45
4.1.6 SEF SHOTS sub-menu ..............................................................................................45
4.1.7 EXTERN SHOTS sub-menu ......................................................................................46
4.2 Manual Close ..........................................................................................................................48
4.3 Circuit Breaker ........................................................................................................................48
4.4 Quick Logic .............................................................................................................................50
Section 5: Supervision Functions ......................................................................................................52
5.1 Circuit Breaker Failure (50BF) ................................................................................................52
5.2 VT Supervision (60VTS) .........................................................................................................53
5.3 CT Supervision (60CTS) .........................................................................................................55
5.4 Broken Conductor (46BC).......................................................................................................56
5.5 Trip Circuit Supervision (74TCS) ............................................................................................56
5.6 Inrush Detector (81HBL2) .......................................................................................................57
5.7 Battery Test.............................................................................................................................58
5.8 Capacitor Test.........................................................................................................................59
5.9 Power Quality (27S/59S).........................................................................................................60
5.10 Demand...................................................................................................................................60
Section 6: Other Features....................................................................................................................61
6.1 Data Communications.............................................................................................................61
6.2 CB Maintenance......................................................................................................................61
6.3 Output Matrix Test...................................................................................................................62
6.4 Data Storage ...........................................................................................................................62
6.4.1 General.......................................................................................................................62
6.4.2 Event Records............................................................................................................62
6.4.3 Waveform Records.....................................................................................................62
6.4.4 Fault Records .............................................................................................................63
6.4.5 Data Log.....................................................................................................................63
6.5 Metering ..................................................................................................................................63
6.6 Operating Mode ......................................................................................................................64
6.7 Control Mode...........................................................................................................................64
6.8 Real Time Clock......................................................................................................................65
6.8.1 Time Synchronisation - IEC 60870-5-103 & DNP3.0.................................................65
6.8.2 Time Synchronisation – Binary Input .........................................................................65
6.8.3 Time Synchronisation – IRIG-B (Optional).................................................................65
6.9 Settings Groups ......................................................................................................................65
6.10 Password Feature ...................................................................................................................66