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9. Abbreviations
Abbreviation Description
ANSI American National Standards Institute
AR Auto reclosure
ASCII American Standard Code for Information Interchange
CBFAIL Circuit-breaker failure protection
CPU Central processing unit
CT Current transformer
DI Digital input
HMI Human-machine interface
IEC International Electrotechnical Commission
IED Intelligent electronic device
IRF Internal relay fault
LCD Liquid crystal display
LED Light-emitting diode
PC Personal computer
PO Power output, process object
PTC Positive temperature coefficient
RTD Resistance temperature device
RTU Remote terminal unit
SGB Switchgroup for digital inputs
SGF Switchgroup for functions
SGL Switchgroup for LEDs
SGR Switchgroup for output contacts
SO Signal output
SPA Data communication protocol developed by ABB
TCS Trip-circuit supervision
Motor Protection Relay
Operator's Manual - ANSI ve rsion
REM 610REM 610
1MRS755538
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