Siemens 7SG11 - Table of Contents

7SG11 Argus 8 Applications Guide
Contents
1 Introduction..........................................................................................................................................2
2 General Information.............................................................................................................................2
2.1 Relay External Connections ........................................................................................................2
2.2 Voltage Blocking Element............................................................................................................2
2.3 Output Contact Delay Time.........................................................................................................3
2.4 Setting DTL Times.......................................................................................................................3
2.5 Voltage Element Hysteresis ........................................................................................................4
2.6 Trip Circuit Supervision ...............................................................................................................4
3 Application of Functions......................................................................................................................4
3.1 Undervoltage Protection..............................................................................................................4
3.2 Overvoltage Protection................................................................................................................5
3.3 Neutral Voltage Displacement Protection....................................................................................5
3.4 NPS Overvoltage Protection........................................................................................................6
3.5 Frequency Protection ..................................................................................................................6
Table of Figures
Figure 1 – Trip Circuit Supervision Scheme........................................................................................8
Figure 2 – 2 Phase-Phase ‘V’ Connection ..........................................................................................9
Figure 3 – 2 Phase-Phase Connection .............................................................................................10
Figure 4 – Phase-Phase with Residual Voltage Connection.............................................................11
Figure 5 – 2 Systems Connection (Ph-N)..........................................................................................12
Figure 6 – 3 Phase-Neutral Connection............................................................................................13
Figure 7 – 2 Phase-Phase with Residual Voltage Connection..........................................................14
Figure 8 – 3 Phase-Phase Connection .............................................................................................15
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