Section 5
Glossary
100BASE-FX
A physical medium defined in the IEEE 802.3 Ethernet
standard for local area networks (LANs) that uses fiber
optic cabling
ANSI
American National Standards Institute
AVR
Automatic voltage regulator
BI/O
Binary input/output
BIO
Binary input and output
CB
Circuit breaker
COMTRADE
Common format for transient data exchange for power
systems. Defined by the IEEE Standard.
Connectivity
package
A collection of software and information related to a
specific protection and control IED, providing system
products and tools to connect and interact with the IED
CPU
Central processing unit
CT
Current transformer
DC
1. Direct current
2. Disconnector
3. Double command
DFT
Discrete Fourier transform
DNP3
A distributed network protocol originally developed by
Westronic. The DNP3 Users Group has the ownership
of the protocol and assumes responsibility for its
evolution.
DT
Definite time
EF
Earth fault
EMC
Electromagnetic compatibility
Ethernet
A standard for connecting a family of frame-based
computer networking technologies into a LAN
GCB
1. GOOSE control block
2. Generator circuit breaker
GOOSE
Generic Object-Oriented Substation Event
HMI
Human-machine interface
HW
Hardware
1MRS757582 C
Section 5
Glossary
REG630
55
Application Manual
Summary of Contents for Relion 630 Series
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