ABB Relion REC670 Applications Manual page 21

21.10.1 Application................................................................................................................................. 446
21.10.2 Setting guidelines.....................................................................................................................446
21.11 Signal matrix for analog inputs SMAI........................................................................................446
21.11.1 Application................................................................................................................................. 446
21.11.2 Frequency values.......................................................................................................................446
21.11.3 Setting guidelines..................................................................................................................... 447
21.12 Test mode functionality TEST..................................................................................................... 451
21.12.1 Application.................................................................................................................................. 451
21.12.1.1 IEC 61850 protocol test mode.............................................................................................452
21.12.2 Setting guidelines..................................................................................................................... 453
21.13 Time synchronization....................................................................................................................453
21.13.1 Application..................................................................................................................................453
21.13.2 Setting guidelines..................................................................................................................... 454
21.13.2.1 System time............................................................................................................................ 454
21.13.2.2 Synchronization..................................................................................................................... 454
21.13.2.3 Process bus IEC 61850-9-2LE synchronization................................................................ 455
Section 22 Requirements.................................................................................................. 457
22.1 Current transformer requirements............................................................................................ 457
22.1.1 Current transformer classification........................................................................................ 457
22.1.2 Conditions.................................................................................................................................. 457
22.1.3 Fault current...............................................................................................................................458
22.1.4 Secondary wire resistance and additional load.................................................................. 458
22.1.5 General current transformer requirements......................................................................... 459
22.1.6 Rated equivalent secondary e.m.f. requirements...............................................................459
22.1.6.1 Breaker failure protection....................................................................................................459
22.1.6.2 Non-directional instantaneous and definitive time, phase and residual
overcurrent protection......................................................................................................... 460
22.1.6.3 Non-directional inverse time delayed phase and residual overcurrent protection. 460
22.1.6.4 Directional phase and residual overcurrent protection................................................. 461
22.1.7 Current transformer requirements for CTs according to other standards.................. 462
22.1.7.1 Current transformers according to IEC 61869-2, class P, PR........................................ 462
22.1.7.2 Current transformers according to IEC 61869-2, class PX, PXR (and old IEC
60044-6, class TPS and old British Standard, class X)................................................... 462
22.1.7.3 Current transformers according to ANSI/IEEE................................................................463
22.2 Voltage transformer requirements............................................................................................463
22.3 SNTP server requirements...........................................................................................................464
22.4 Sample specification of communication requirements for the protection and
control terminals in digital telecommunication networks................................................... 464
22.5 IEC 61850-9-2LE Merging unit requirements .......................................................................... 465
Section 23 Glossary........................................................................................................... 467
Application manual
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