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Section 10
Glossary
M14893-1 v11.1.1
AC
Alternating current
ACC
Actual channel
ACT
Application configuration tool within PCM600
A/D converter
Analog-to-digital converter
ADBS
Amplitude deadband supervision
AI
Analog input
ANSI
American National Standards Institute
AR
Autoreclosing
ASCT
Auxiliary summation current transformer
ASD
Adaptive signal detection
ASDU
Application service data unit
AWG
American Wire Gauge standard
BBP
Busbar protection
BFOC/2,5
Bayonet fibre optic connector
BFP
Breaker failure protection
BI
Binary input
BOS
Binary outputs status
BR
External bistable relay
BS
British Standards
CB
Circuit breaker
CCITT
Consultative Committee for International Telegraph and Telephony. A
United Nations-sponsored standards body within the International
Telecommunications Union.
CCVT
Capacitive Coupled Voltage Transformer
Class C
Protection Current Transformer class as per IEEE/ ANSI
CMPPS
Combined megapulses per second
CMT
Communication Management tool in PCM600
CO cycle
Close-open cycle
COMTRADE
Standard format according to IEC 60255-24
COT
Cause of transmission
CPU
Central processing unit
CR
Carrier receive
CRC
Cyclic redundancy check
CROB
Control relay output block
CS
Carrier send
CT
Current transformer
CU
Communication unit
CVT
Capacitive voltage transformer
1MRK 505 293-UEN B
Section 10
Glossary
Breaker protection REQ650
111
Commissioning manual
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Summary of Contents for REQ650 1.3 IEC
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