4.1.5 Frequency Measurements 318
4.1.6 Other Measurements 318
4.2 Measurement Setup 318
4.3 Fault Locator 319
4.3.1 Fault Locator Settings Example 319
4.4 Opto-input Time Stamping 319
5 CB Condition Monitoring 320
5.1 Application Notes 320
5.1.1 Setting the Thresholds for the Total Broken Current 320
5.1.2 Setting the thresholds for the Number of Operations 320
5.1.3 Setting the thresholds for the Operating Time 321
5.1.4 Setting the Thresholds for Excesssive Fault Frequency 321
6 CB State Monitoring 322
6.1 CB State Monitoring Logic 323
7 Circuit Breaker Control 324
7.1 CB Control using the IED Menu 324
7.2 CB Control using the Hotkeys 325
7.3 CB Control using the Function Keys 325
7.4 CB Control using the Opto-inputs 326
7.5 Remote CB Control 326
7.6 CB Control Logic 328
7.7 Synchronisation Check 328
7.8 CB Healthy Check 328
8 Pole Dead Function 329
8.1 Pole Dead Logic 329
9 System Checks 330
9.1 System Checks Implementation 330
9.1.1 VT Connections 330
9.1.2 Voltage Monitoring 330
9.1.3 Check Synchronisation 331
9.1.4 Check Syncronisation Vector Diagram 331
9.1.5 System Split 332
9.2 System Check Logic 333
9.3 System Check PSL 334
9.4 Application Notes 334
9.4.1 Slip Control 334
9.4.2 Use of Check Sync 2 and System Split 335
9.4.3 Predictive Closure of Circuit Breaker 335
9.4.4 Voltage and Phase Angle Correction 335
10 Switch Status and Control 337
10.1 Switch Status Logic 338
10.2 Switch Control Logic 339
Chapter 15 Supervision 341
1 Chapter Overview 343
2 Voltage Transformer Supervision 344
2.1 Loss of One or Two Phase Voltages 344
2.2 Loss of all Three Phase Voltages 344
2.3 Absence of all Three Phase Voltages on Line Energisation 344
2.4 VTS Implementation 345
2.5 VTS Logic 345
2.6 VTS Acceleration Indication Logic 347
3 Current Transformer Supervision 348
3.1 CTS Implementation 348
3.2 CTS Logic 348
3.3 Application Notes 349
Contents P14x
x P14xEd1-TM-EN-1
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