7SR18 Instrumentation Guide
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1. Relay Instrumentation
The Instrument Mode sub-menu displays key quantities and information to aid with commissioning. The following
meters are available and are navigated around by using the ▲,▼and TEST/REST buttons. The text description
shown here is the default information. Depending upon the relay model you have, you may not have all of the
meters shown.
1.1 Favourite Meters
--------------------
> to view
This allows the user to view his previously constructed list of ‘favourite
meters’ by pressing TEST/RESET ► button and the READ DOWN button to
scroll though the meters added to this sub-group
To construct a sub-group of favourite meters, first go to the desired meter
then press ENTER this will cause a message to appear on the LCD ‘Add To
Favourites YES pressing ENTER again will add this to the FAVOURITE
METERS Sub-menu. To remove a meter from the FAVOURITE METERS
sub-menu go to that meter each in the FAVOURITE METERS sub-menu or
at its Primary location press ENTER and the message ‘Remove From
Favourites’ will appear press ENTER again and this meter will be removed
from the FAVOURITE METERS sub-group
1.2 Current Meters
--------------------
> to view
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This is the sub-group that includes all the meters that are associated with
Current TEST/RESET ► allows access to this sub-group
Primary Current
Ia 0.00A
Ib 0.00A
Ic 0.00A
Displays the 3 phase-currents Primary RMS values
Secondary Current
Ia 0.00A
Ib 0.00A
Ic 0.00A
Displays the 3 phase-currents Secondary RMS values
Nom Current
Ia 0.00xIn ----
o
Ib 0.00xIn ----
o
Ic 0.00xIn ----
o
Displays the 3 phase-currents Nominal RMS values & phase angles with
respect to PPS current.
Pri Earth Current
In 0.00A
Ig 0.00A
Displays the 3 Earth-currents Primary RMS values
Sec Earth Current
In 0.00A
Ig 0.00A
Displays the 3 Earth-currents Secondary RMS values
Nom Earth Current
In 0.00xIn ----
o
Ig 0.00xIn ----
o
Displays the 3 Earth-currents Nominal RMS values & phase angles with
respect to PPS current.
Remote Pri Current
Ia 0.00A
Ib 0.00A
Ic 0.00A
Displays the 3 phase-currents Remote Primary RMS values
Remote Sec Current
Ia 0.00A
Displays the 3 phase-currents Remote Secondary RMS values
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