Siemens 7SR224 Technical Manual page 88

2.8.3 Operate and Reset Time......................................................................................................... 25
2.9 51 Time Delayed Overcurrent ............................................................................................................... 26
2.9.1 Reference ............................................................................................................................... 26
2.9.2 Operate and Reset Level ........................................................................................................ 26
2.9.3 Operate and Reset Time......................................................................................................... 27
2.10 51G Time Delayed Measured Earth Fault............................................................................................. 28
2.10.1 Reference ............................................................................................................................... 28
2.10.2 Operate and Reset Level ........................................................................................................ 28
2.10.3 Operate and Reset Time......................................................................................................... 29
2.11 51SEF Time Delayed Sensitive Earth Fault .......................................................................................... 33
2.11.1 Reference ............................................................................................................................... 33
2.11.2 Operate and Reset Level ........................................................................................................ 33
2.11.3 Operate and Reset Time......................................................................................................... 34
2.12 51V Voltage Controlled Overcurrent ..................................................................................................... 35
2.12.1 Reference ............................................................................................................................... 35
2.12.2 Operate and Reset Level ........................................................................................................ 35
2.13 59N Neutral Voltage Displacement ....................................................................................................... 36
2.13.1 Reference (59NDT)................................................................................................................. 36
2.13.2 Operate and Reset Level (59NDT) ......................................................................................... 36
2.13.3 Operate and Reset Time (59NDT) .......................................................................................... 36
2.13.4 Reference (59NIT) .................................................................................................................. 36
2.13.5 Operate and Reset Level (59NIT) ........................................................................................... 36
2.13.6 Operate and Reset Time (59NIT)............................................................................................ 37
2.14 64H Restricted Earth Fault Protection................................................................................................... 38
2.14.1 Reference ............................................................................................................................... 38
2.14.2 Operate and Reset Level ........................................................................................................ 38
2.14.3 Operate and Reset Time......................................................................................................... 38
2.15 67/67G/67SEF Directional Overcurrent & Earth Fault........................................................................... 39
2.15.1 Reference ............................................................................................................................... 39
2.15.2 Operate Angle......................................................................................................................... 39
2.15.3 Operate Threshold .................................................................................................................. 39
2.15.4 Minimum Polarising Voltage Level .......................................................................................... 39
2.15.5 Operate and Reset Time......................................................................................................... 39
2.16 81Under/Over Frequency...................................................................................................................... 40
2.16.1 Reference ............................................................................................................................... 40
2.16.2 Operate and Reset Level ........................................................................................................ 40
2.16.3 Operate and Reset Time......................................................................................................... 40
Section 3: Supervision Functions........................................................................................................................... 41
3.1 46BC Broken Conductor ....................................................................................................................... 41
3.1.1 Reference ............................................................................................................................... 41
3.1.2 Operate and Reset Level ........................................................................................................ 41
3.1.3 Operate and Reset Time......................................................................................................... 41
3.2 50BF Circuit Breaker Fail ...................................................................................................................... 42
3.2.1 Reference ............................................................................................................................... 42
3.2.2 Operate and Reset Level ........................................................................................................ 42
3.2.3 Operate and Reset Time......................................................................................................... 42
3.3 60CTS Current Transformer Supervision.............................................................................................. 43
3.3.1 Reference ............................................................................................................................... 43
3.3.2 Current & Voltage Threshold................................................................................................... 43
3.3.3 Operate and Reset Time......................................................................................................... 43
3.4 60VTS Voltage Transformer Supervision.............................................................................................. 44
3.4.1 Reference (60VTS) ................................................................................................................. 44
3.4.2 Operate and Reset Level ........................................................................................................ 44
3.4.3 Operate and Reset Time......................................................................................................... 44
3.5 60VTF-Bus Voltage Transformer Supervision....................................................................................... 45
3.5.1 Reference (60VTF) ................................................................................................................. 45
3.5.2 Operate and Reset Time......................................................................................................... 45
3.6 74TCS Trip Circuit Supervision............................................................................................................. 45
3.6.1 Operate and Reset Time......................................................................................................... 45
3.7 81HBL2 Inrush Detector........................................................................................................................ 46
3.7.1 Reference ............................................................................................................................... 46
3.7.2 Operate and Reset Level ........................................................................................................ 46
3.7.3 Operate and Reset Time......................................................................................................... 46
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7SR224 Argus Performance Specification
Chapter 3 Page 3 of 49