126
CPU
Abbreviation for Central Processing Unit (or processor), the
primary functional element of a computer.
CT
Acronym for Current Transformer
D
Daemon
A daemon is a computer program that runs as a
background process, rather than being under the direct
control of an interactive user. Systems often start daemons
at boot time: they often serve the function of responding to
network requests, hardware activity, or other programs by
performing some task.
dB
Decibel, the unit of power-level comparison; technically, the
base-10 logarithm of a ratio of two power levels
DDR
Acronym for Dynamic Disturbance Record, a subsystem of
the DME. This record is created dynamically when a trigger
condition is detected. It contains data for a longer period of
time and at a lower sample rate than transient DFR
records. These records are used to capture disturbances
on the monitored inputs.
DDR Analog
This is a DDR record containing waveform data.
DDR RMS
This is a DDR record containing calculated RMS data.
Descripts
Abbreviation for Descriptions
DFR
Acronym for Digital Fault Recorder. A subsystem of the
DME.
DFR/SER
Acronym for Digital Fault Recorder/Sequence of Events
Recorder. Subsystems of the DME.
Disturbance
An unplanned event that produces an abnormal system
condition.
DME
Acronym for Disturbance Monitoring Equipment (i.e. Digital
Fault Recorder, Sequence of Events Recorder, and
Disturbance Monitoring System)
DST
Acronym for Daylight Saving Time.
E
E-mail
Electronic mail routed over the Internet or Intranet. See
SMTP/POP3.
Ethernet
Ethernet is a family of computer networking technologies
for Local Area Networks (LANs). It has been standardized
as IEEE 802.3 and has been in use since the early 1980s.
It has largely replaced the competing technologies: token
ring, FDDI, and ARCNET.
EV#
Abbreviation for Event Number
F
Fault type
This identifies the type of fault as phase-to-phase (ABC,
AB, BC, CA), or phase-to-phase-to-ground: (ABG, BCG,
CAG), or phase-to-ground (AG, BG, or CG).
FID
Abbreviation for Fault Identification (ID) number
To Next Page