8.4
SEL-387-0, -5, -6 Relay Instruction Manual Date Code 20170601
Front-Panel Interface
Pushbuttons
While METER information is being scrolled every two seconds, the scroll can
be stopped by pushing {SELECT}. The user can then manually scroll through the
displays with the up/down arrow keys. This facilitates writing down the
displayed information by hand, for example. Pushing {SELECT} again will
resume the scroll.
Figure 8.5, at the end of this section, shows the full METER menu and display
structure.
When {METER} is pushed, the seven dual-function buttons revert to their
secondary functions. The first METER menu prompts the user to select
W1, W2,
W3, W4, DIF, or VDC metering display. W1 to W4 are winding displays, DIF is the
differential element display, and
VDC is the Battery Monitor display. Use any
arrow button to highlight the choice. Then push {SELECT}.
Windings (W1, W2, W3, W4)
If a winding has been selected, a second menu appears prompting the user to
select the type of metering to display. The choices are
INSTantaneous, DEMand,
PKD peak demand, or SECondary. Use the right/left arrows to choose, then push
{SELECT}.
If
INST or SEC is selected, the relay scrolls through the primary current
magnitudes or secondary current magnitudes and angles for the selected
winding. If
DEM or PKD is selected, a third menu appears prompting the user to
select to either
DISPLAY the demand information or to RESET the demand
accumulators.
Use the right/left arrows and {SELECT} to choose. If
RESET is chosen, the relay
will prompt for a Yes/No verification of the choice. Use the right/left arrows
and {SELECT} to choose. If
DISPLAY is chosen, the relay will scroll through the
demand values.
If the Analog Input Label settings (IAW1, etc.) have been renamed, these will
appear in the displays as set.
Differential Element (DIF)
If DIF is selected, the relay scrolls through the instantaneous multiple of tap
values for Operate, Restraint, and harmonic quantities.
Battery Monitor (VDC)
If VDC is selected, the relay displays Station Battery and VDC = nnn.n.
EVENTS
Push the {EVENTS} pushbutton to display short event summaries, comparable to
the HIS serial port command.
If no EVENT records exist, the display states
No Fault Data and terminates
the command.
If there are records to view, use the right/left arrows to review data within an
event record and the up/down arrows to move between event records.
Information displayed for a given event is the event number, date/time, active
setting group, fault targets, and the winding secondary current magnitudes
(IA, IB, IC). The currents only appear if the entire event report still resides in
relay memory. The Analog Input Label names are not used in this display.
Current information is simply listed, for example, as
W1 followed by ABC
and the magnitudes. There may be more than 75 event summaries in the
NOTE: The harmonic spectrum
metering function, the MET H serial
port command, is not available from
the front panel.
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