Test mode functionality TESTMODE....................................................976
Application
....................................................................................... 976
IEC 61850 protocol test mode
.................................................... 976
Setting guidelines............................................................................ 977
Time synchronization TIMESYNCHGEN..............................................978
Application....................................................................................... 978
Setting guidelines............................................................................ 979
System time................................................................................979
Synchronization.......................................................................... 979
Section 25 Requirements.................................................................... 983
Current transformer requirements........................................................ 983
Current transformer basic classification and requirements............. 983
Conditions........................................................................................985
Fault current.....................................................................................986
Secondary wire resistance and additional load............................... 986
General current transformer requirements...................................... 987
Rated equivalent secondary e.m.f. requirements............................ 987
Transformer differential protection..............................................988
Distance protection.....................................................................989
Breaker failure protection........................................................... 990
Restricted ground fault protection (low impedance differential)..991
Current transformer requirements for CTs according to other
standards.........................................................................................993
Current transformers according to IEC 61869-2, class P, PR.... 994
Current transformers according to IEC 61869-2, class PX,
PXR (and old IEC 60044-6, class TPS
and old British Standard, class X).............................................. 994
Current transformers according to ANSI/IEEE........................... 994
Voltage transformer requirements........................................................ 995
SNTP server requirements................................................................... 996
PTP requirements.................................................................................996
Sample specification of communication requirements for the
protection and control terminals in digital telecommunication
networks............................................................................................... 996
Section 26 Glossary............................................................................ 999
Table of contents
26 Transformer protection RET670 2.2 ANSI
Application manual
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