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9. Abbreviations
Abbreviation Description
ANSI American National Standards Institute
ASCII American Standard Code for Information Interchange
AWG American wire gauge
CBFAIL Circuit-breaker failure protection
CBFP Circuit-breaker failure protection
CD Change detect; compact disk
CPU Central processing unit
CRC Cyclical redundancy check
CT Current transformer
DI Digital input
EEPROM Electrically Erasable Programmable Read-Only Memory
EMC Electromagnetic compatibility
ER Event records
FR Fault record
GI General interrogation
HMI Human-machine interface
HR Holding register
IDMT Inverse definite minimum time characteristic
IEC International Electrotechnical Commission
IEC_103 Standard IEC 60870-5-103
IED Intelligent electronic device
IEEE Institute of Electrical and Electronics Engineers, Inc.
IR Input register
IRF Internal relay fault
LCD Liquid crystal display
LED Light-emitting diode
LRC Longitudinal redundancy check
MP Minute-pulse
MSB Most significant bit
MV Medium voltage
NACK Negative acknowledgments
NC Normally closed
NO Normally open
NPS Negative-phase-sequence
PC Personal computer
PCB Printed circuit board
PLC Programmable logical controller
PO Power output, process object
PTC Positive temperature coefficient
REV Phase reversal
Motor Protection Relay
Technical Reference Manual - ANSI Version
REM 610REM 610
1MRS755537
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