Section 17 Glossary
615 series Series of numerical protection and control relays for
protection and supervision applications of utility
substations, and industrial switchgear and equipment
AC Alternating current
ACT 1. Application Configuration tool in PCM600
2. Trip status in IEC 61850
ANSI American National Standards Institute
AVR Automatic voltage regulator
CAT 5 A twisted pair cable type designed for high signal integrity
CAT 5e An enhanced version of CAT 5 that adds specifications for
far end crosstalk
CB Circuit breaker
CBB Cycle building block
COMTRADE Common format for transient data exchange for power
systems. Defined by the IEEE Standard.
CPU Central processing unit
CT Current transformer
CTS Clear to send
DAN Doubly attached node
DC 1. Direct current
2. Disconnector
3. Double command
DCD
Data carrier detect
DFR Digital fault recorder
DFT Discrete Fourier transform
DG Distributed generation
DHCP Dynamic Host Configuration Protocol
1MAC059074-MB A Section 17
Glossary
615 series ANSI 1181
Technical Manual
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