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
DAR
Delayed autoreclosing
DARPA
Defense Advanced Research Projects Agency (The US
developer of the TCP/IP protocol etc.)
DBDL
Dead bus dead line
DBLL
Dead bus live line
DC
Direct current
DFC
Data flow control
DFT
Discrete Fourier transform
DHCP
Dynamic Host Configuration Protocol
DI
Digital input
DLLB
Dead line live bus
DNP
Distributed Network Protocol as per IEEE Std 1815-2012
DR
Disturbance recorder
DRAM
Dynamic random access memory
DRH
Disturbance report handler
DTT
Direct transfer trip scheme
EHV network
Extra high voltage network
EIA
Electronic Industries Association
EMC
Electromagnetic compatibility
EMF
Electromotive force
EMI
Electromagnetic interference
EnFP
End fault protection
EPA
Enhanced performance architecture
ESD
Electrostatic discharge
F-SMA
Type of optical fibre connector
FAN
Fault number
FCB
Flow control bit; Frame count bit
Section 22
1MRK 502 048-UEN A
Glossary
714
Technical manual
Summary of Contents for REG650 ANSI
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