2 ACRONYMS AND ABBREVIATIONS
Term Description
A Ampere
AA Application Association
AC / ac Alternating Current
ACSI Abstract Communication Service Interface
ACSR Aluminum Conductor Steel Reinforced
ALF Accuracy Limit Factor
AM Amplitude Modulation
ANSI American National Standards Institute
AR Auto-Reclose.
ARIP Auto-Reclose In Progress
ASDU Application Service Data Unit
ASCII American Standard Code for Information Interchange
AUX / Aux Auxiliary
AWG American Wire Gauge
BAR Block Auto-Reclose signal.
BCD Binary Coded Decimal
BCR Binary Counter Reading
BDEW
Bundesverband der Energie- und Wasserwirtschaft | Startseite (i.e. German Association of Energy
and Water Industries)
BMP BitMaP – a file format for a computer graphic
BOP Blocking Overreach Protection - a blocking aided-channel scheme.
BRCB Buffered Report Control Block
BRP Beacon Redundancy Protocol
BU Backup: Typically a back-up protection element
C/O
A ChangeOver contact having normally-closed and normally-open connections: Often called a
"form C" contact.
CB Circuit Breaker
CB Aux. Circuit Breaker auxiliary contacts: Indication of the breaker open/closed status.
CBF Circuit Breaker Failure protection
CDC Common Data Class
CF Control Function
Ch Channel: usually a communications or signaling channel
CIP Critical Infrastructure Protection standards
CLIO Current Limited Input Output
CLK / Clk Clock
Cls Close - generally used in the context of close functions in circuit breaker control.
CMV Complex Measured Value
CNV Current No Volts
COT Cause of Transmission
CPNI Centre for the Protection of National Infrastructure
CRC Cyclic Redundancy Check
Appendix A - Symbols and Glossary MiCOM P747
408 P747-TM-EN-1
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