ABB RES670 Applications Manual page 18

Table of contents
12
Current transformer basic classification and requirements....... 355
Conditions..................................................................................357
Fault current.............................................................................. 358
Secondary wire resistance and additional load......................... 358
General current transformer requirements................................ 359
Rated equivalent secondary e.m.f. requirements...................... 359
Current transformer requirements for CTs according to
other standards..........................................................................359
Current transformers according to IEC 61869-2,
class P, PR...........................................................................360
Current transformers according to IEC 61869-2, class
PX, PXR (and old IEC 60044-6, class TPS
and old British Standard, class X)........................................ 360
Current transformers according to ANSI/IEEE..................... 360
Voltage transformer requirements.................................................. 361
SNTP server requirements............................................................. 361
PTP requirements...........................................................................362
Sample specification of communication requirements for the
protection and control terminals in digital telecommunication
networks......................................................................................... 362
IEC/UCA 61850-9-2LE Merging unit requirements ....................... 363
Section 24 Glossary....................................................................... 365
Phasor measurement unit RES670 2.2 IEC
Application manual