ABB 650 series Applications Manual page 17

Bay control REC650 2.2 IEC
Application manual
Secondary wire resistance and additional load......................... 294
General current transformer requirements................................ 295
Rated equivalent secondary e.m.f. requirements...................... 295
Non-directional instantaneous and definitive time, phase
and residual overcurrent protection......................................295
Non-directional inverse time delayed phase and residual
overcurrent protection.......................................................... 296
Directional phase and residual overcurrent protection......... 297
Current transformer requirements for CTs according to
other standards..........................................................................298
Current transformers according to IEC 61869-2,
class P, PR...........................................................................298
Current transformers according to IEC 61869-2, class
PX, PXR (and old IEC 60044-6, class TPS
and old British Standard, class X)........................................ 298
Current transformers according to ANSI/IEEE..................... 298
Voltage transformer requirements.................................................. 299
SNTP server requirements............................................................. 300
PTP requirements...........................................................................300
IEC/UCA 61850-9-2LE Merging unit requirements ....................... 300
Section 17 Glossary....................................................................... 303
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