SEL-701-1 Monitor
Date Code 20011009
Glossary
Event Report -IN
GL.4
Event Report
A text-based collection of data stored by the monitor in
response to a triggering condition, such as a fault or
user command. The data shows monitor measurements
before and after the trigger, in addition to the states of
protection elements, monitor inputs, and monitor
outputs each processing interval. After an electrical
system fault, use event reports to analyze monitor and
system performance.
Fail-Safe
Refers to an output contact that is energized during
normal monitor operation and deenergized when
monitor power is removed or if the monitor fails.
Fast Meter, Fast Operate
Binary serial port commands that the monitor
recognizes at its front-and rear-panel EIA-232 serial
ports. These commands and the monitor’s responses
make monitor data collection by a communications
processor faster and more efficient than transfer of the
same data using formatted ASCII text commands and
responses.
FID
Monitor firmware identification string. Lists the
monitor model, firmware version and datecode, and
other information that uniquely identifies the firmware
installed in a particular monitor.
Firmware
The nonvolatile program stored in the monitor that
defines monitor operation.
Flash
A type of nonvolatile monitor memory used for storing
large blocks of nonvolatile data, such as load profile
records.
Fundamental Frequency
The component of the measured electrical signal
whose frequency is equal to the normal electrical
system frequency, usually 50 or 60 Hz. Generally used
to differentiate between the normal system frequency
and any harmonic frequencies present.
hp
Abbreviation for horsepower. 1 hp = 745.7 W.
IA, IB, IC
Measured A-, B-, and C-phase currents.
IG
Residual current, calculated from the sum of the phase
currents. In normal, balanced operation, this current is
very small or zero. When a motor ground fault occurs,
this current can be large.
IN
Neutral current measured by the monitor IN input. The
IN input is typically connected to the secondary
winding of a window-CT for motor ground fault
detection on resistance-grounded systems.
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