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Section 5
Glossary
52
C37.94
CAN
CB
CBM
CCITT
CCM
CCVT
Class C
CMPPS
CMT
CO cycle
Codirectional
COM
COMTRADE
Contra-directional
COT
CPU
CR
CRC
CROB
CS
CT
CU
CVT or CCVT
DAR
IEEE/ANSI protocol used when sending binary signals
between IEDs
Controller Area Network. ISO standard (ISO 11898) for serial
communication
Circuit breaker
Combined backplane module
Consultative Committee for International Telegraph and
Telephony. A United Nations-sponsored standards body
within the International Telecommunications Union.
CAN carrier module
Capacitive Coupled Voltage Transformer
Protection Current Transformer class as per IEEE/ ANSI
Combined megapulses per second
Communication Management tool in PCM600
Close-open cycle
Way of transmitting G.703 over a balanced line. Involves two
twisted pairs making it possible to transmit information in
both directions
Command
Standard Common Format for Transient Data Exchange
format for Disturbance recorder according to IEEE/ANSI
C37.111, 1999 / IEC 60255-24
Way of transmitting G.703 over a balanced line. Involves four
twisted pairs, two of which are used for transmitting data in
both directions and two for transmitting clock signals
Cause of transmission
Central processing unit
Carrier receive
Cyclic redundancy check
Control relay output block
Carrier send
Current transformer
Communication unit
Capacitive voltage transformer
Delayed autoreclosing
1MRK 511 391-UUS A
670 series 2.2 ANSI
Communication protocol manual
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