GE MiCOM P40 Agile - Page 14

5.5 Reset Lockout Alarm 439
5.6 CB Condition Monitoring Logic 440
5.7 Reset Circuit Breaker Lockout 440
5.7.1 Reset CB Lockout Logic Diagram 441
5.8 Application Notes 441
5.8.1 Setting the Thresholds for the Total Broken Current 441
5.8.2 Setting the thresholds for the Number of Operations 442
5.8.3 Setting the thresholds for the Operating Time 442
5.8.4 Setting the Thresholds for Excesssive Fault Frequency 442
6 CB State Monitoring 443
6.1 CB State Monitor Logic diagram 444
7 Circuit Breaker Control 445
7.1 CB Control using the IED Menu 445
7.2 CB Control using the Hotkeys 446
7.3 CB Control using the Function Keys 446
7.4 CB Control using the Opto-inputs 447
7.5 Remote CB Control 447
7.6 CB Healthy Check 448
7.7 Synchronisation Check 448
7.8 CB Control AR Implications 448
7.9 CB Control Logic Diagram 449
8 Pole Dead Function 450
8.1 Pole Dead Logic 450
9 System Checks 451
9.1 System Checks Implementation 451
9.1.1 VT Connections 451
9.1.2 Voltage Monitoring 452
9.1.3 Check Synchronisation 452
9.1.4 Check Syncronisation Vector Diagram 452
9.2 Voltage Monitor for CB Closure 454
9.3 Check Synchronisation Monitor for CB Closure 455
9.4 System Check PSL 456
9.5 Application Notes 456
9.5.1 Predictive Closure of Circuit Breaker 456
9.5.2 Voltage and Phase Angle Correction 456
Chapter 18 Supervision 459
1 Chapter Overview 461
2 Current Differential Supervision 462
2.1 Current Differential Starter Supervision 462
2.1.1 Current Differential Starter Supervision Logic 464
2.1.2 Current Differential Start Logic 465
2.2 Switched Communication Path Supervision 465
2.3 Communications Asymmetry Supervision 466
2.4 GPS Synchronisation Supervision 467
2.4.1 Propogation Delay Management 468
3 Voltage Transformer Supervision 470
3.1 Loss of One or Two Phase Voltages 470
3.2 Loss of all Three Phase Voltages 470
3.3 Absence of all Three Phase Voltages on Line Energisation 470
3.4 VTS Implementation 471
3.5 VTS Logic 472
4 Current Transformer Supervision 475
4.1 Differential CTS 475
4.2 Differential CTS Logic 476
4.3 CTS Implementation 476
Contents P543i/P545i
xii P54x1i-TM-EN-1