20.8 Signal matrix for binary inputs SMBI......................................................................................... 435
20.8.1 Application..................................................................................................................................435
20.8.2 Setting guidelines..................................................................................................................... 435
20.9 Signal matrix for binary outputs SMBO ................................................................................... 435
20.9.1 Application..................................................................................................................................435
20.9.2 Setting guidelines..................................................................................................................... 436
20.10 Signal matrix for mA inputs SMMI..............................................................................................436
20.10.1 Application................................................................................................................................. 436
20.10.2 Setting guidelines..................................................................................................................... 436
20.11 Signal matrix for analog inputs SMAI........................................................................................ 436
20.11.1 Application................................................................................................................................. 436
20.11.2 Frequency values.......................................................................................................................436
20.11.3 Setting guidelines..................................................................................................................... 437
20.12 Test mode functionality TESTMODE......................................................................................... 441
20.12.1 Application..................................................................................................................................441
20.12.1.1 IEC 61850 protocol test mode.............................................................................................442
20.12.2 Setting guidelines..................................................................................................................... 443
20.13 Time synchronization TIMESYNCHGEN.................................................................................... 443
20.13.1 Application................................................................................................................................. 443
20.13.2 Setting guidelines.....................................................................................................................444
20.13.2.1 System time............................................................................................................................444
20.13.2.2 Synchronization..................................................................................................................... 444
20.13.2.3 Process bus IEC/UCA 61850-9-2LE synchronization...................................................... 446
Section 21 Requirements..................................................................................................449
21.1 Current transformer requirements............................................................................................449
21.1.1 Current transformer basic classification and requirements........................................... 449
21.1.2 Conditions.................................................................................................................................. 450
21.1.3 Fault current............................................................................................................................... 451
21.1.4 Secondary wire resistance and additional load.................................................................. 451
21.1.5 General current transformer requirements......................................................................... 452
21.1.6 Rated equivalent secondary e.m.f. requirements...............................................................452
21.1.6.1 Busbar protection..................................................................................................................452
21.1.6.2 Breaker failure protection.................................................................................................... 453
21.1.6.3 Non-directional instantaneous and definitive time, phase and residual
overcurrent protection......................................................................................................... 454
21.1.6.4 Non-directional inverse time delayed phase and residual overcurrent protection. 454
21.1.7 Current transformer requirements for CTs according to other standards.................. 455
21.1.7.1 Current transformers according to IEC 61869-2, class P, PR........................................ 455
21.1.7.2 Current transformers according to IEC 61869-2, class PX, PXR (and old IEC
60044-6, class TPS and old British Standard, class X)................................................... 455
21.1.7.3 Current transformers according to ANSI/IEEE................................................................456
21.2 Voltage transformer requirements............................................................................................456
21.3 SNTP server requirements........................................................................................................... 457
21.4 PTP requirements.......................................................................................................................... 457
21.5 Sample specification of communication requirements for the protection and
control terminals in digital telecommunication networks....................................................457
Table of contents
14 Busbar protection REB670
Application manual
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