ABB Relion 670 series Engineering Manual page 98

Section 10
Glossary
92
CCITT
CCM
CCVT
Class C
CMPPS
CMT
CO cycle
Codirectional
COMTRADE
Contra-directional
CPU
CR
CRC
CROB
CS
CT
CVT
DAR
DARPA
DBDL
DBLL
DC
DFC
DFT
DHCP
DIP-switch
DI
DLLB
DNP
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
Standard format according to 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
Central processor unit
Carrier receive
Cyclic redundancy check
Control relay output block
Carrier send
Current transformer
Capacitive voltage transformer
Delayed autoreclosing
Defense Advanced Research Projects Agency (The US
developer of the TCP/IP protocol etc.)
Dead bus dead line
Dead bus live line
Direct current
Data flow control
Discrete Fourier transform
Dynamic Host Configuration Protocol
Small switch mounted on a printed circuit board
Digital input
Dead line live bus
Distributed Network Protocol as per IEEE Std 1815-2012
1MRK511240-UEN B
670 series
Engineering Manual