Abbreviations - ABB REF 610 Technical Reference Manual

REF 610
9.
150
Feeder Protection Relay
Technical Reference Manual - ANSI Version

Abbreviations

ANSI American National Standards Institute
AR Auto-reclose
ASCII American Standard Code for Information Interchange
AWG American wire gauge
CB Circuit breaker
CBFAIL Circuit-breaker failure protection
CD Change detect
CPU Central Processing Unit
CRC Cyclical Redundancy Check
CT Current transformer
DI Digital input
EEPROM Electrically erasable programmable read-only memory
EMC Electromagnetic compatibility
EPA Enhanced Performance Architecture
ER Event record
FR Fault record
GI General interrogation
HMI Human-Machine Interface
HR Holding register
IDMT (mode) Inverse definite minimum time
IEC International Electrotechnical Commission
IEC_103 Standard IEC 60870-5-103
IEEE Institute of Electrical and Electronics Engineers, Inc.
IR Input registers
IRF Internal relay fault
ISO International Organization for Standardization
LCD Liquid Crystal Display
LED Light-emitting diode
LRC Longitudinal Redundancy Check
LSB Least significant bit
MP Minute-pulse
MSB Most significant bit
MV Medium Voltage
NC Normally closed
NO Normally open
OSI Open System Interconnection
PC Personal Computer
PCB Printed Circuit Board
PLC Programmable Logical Controller
PO1, PO2, PO3 Trip outputs
RMS Root Mean Square
RTU Remote Terminal Unit
1MRS 755535