U.3.20
SEL-421/SEL-421-1 Relay
User’s Guide
Date Code 20020501
PC Software
HMI Meter and Control
Table 3.2
AC
SEL
ERATOR
HMI Tree View Functions
Function
Description
Device Overview
View general metering, selected targets, control input, control
outputs, and the virtual front panel.
Phasors
A graphical and textual representation of phase and sequence
voltage and current phasors.
Instantaneous
A table of instantaneous voltages, currents, powers, frequency,
and dc monitor voltages.
Demand/Peak
A table showing demand and peak demand values. Reset but-
tons are in this display.
Max/Min
A table showing maximum/minimum metering quantities. A
reset button is in this display.
Energy
A table showing energy import/export. A reset button is in this
display.
Targets
View selected Relay Word bits in a row/column format.
Status
A list of relay status conditions.
SER
Sequential Events Recorder data listed oldest to newest, top to
bottom. Set the range of SER records with the dialog boxes at
the bottom of the display.
Breaker Monitor Data
A table showing the latest circuit breaker monitor data.
Control Window
Metering and records reset buttons, trip and close control, out-
put pulsing, target reset, time and date set, group switch, and
remote bit control.
Summary of Contents for SEL-421
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