Alstom MiCOM P846, Technical Manual

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Settings P846/EN ST/D
MiCOM P846
(ST) 4-11
ST
Menu Text Default Setting Available Settings
DDB 31 - 0 11111111111111111111111111111111
Allows the user to individually select whether DDB signals 0 to 31 create an event or not.
Setting a ‘1’ will allow an event to be generated; setting a ’0’ will prevent an event being
generated.
DDB 1022 - 992 11111111111111111111111111111111
As above, for DDB signals 992 to 1022.
1.3.5 Measurements
Menu Text Default Settings Available settings
MEASUREMENT SETUP
Default Display Description
Description/Plant Reference/
Frequency/Access Level/3Ph + N
Current/3Ph Voltage/Power/Date
and Time
This setting can be used to select the default display from a range of options, note that it is
also possible to view the other default displays whilst at the default level using the
and
keys. However once the 15 minute timeout elapses the default display will revert to that
selected by this setting.
Local Values Primary Primary/Secondary
This setting controls whether measured values via the front panel user interface and the
front courier port are displayed as primary or secondary quantities.
Remote Values Primary Primary/Secondary
This setting controls whether measured values via the rear communication port are
displayed as primary or secondary quantities.
Measurement Ref. VA VA/VB/VC/
Ι
A/
Ι
B/
Ι
C
Using this setting the phase reference for all angular measurements by the relay can be
selected.
Measurement Mode 0 0 to 3 step 1
This setting is used to control the signing of the real and reactive power quantities; the
signing convention used is defined in the Measurements and Recording section
(P145/EN MR).
Fix Dem. Period 30 minutes 1 to 99 minutes step 1 minute
This setting defines the length of the fixed demand window.
Roll Sub Period 30 minutes 1 to 99 minutes step 1 minute
These two settings are used to set the length of the window used for the calculation of
rolling demand quantities.
Num. Sub Periods 1 1 to 15 step 1
This setting is used to set the resolution of the rolling sub window.
Distance Unit Miles Kilometers/Miles
This setting is used to select the unit of distance for fault location purposes, note that the
length of the line is preserved when converting from km to miles and vice versa
Fault Location Distance Distance/Ohms/% of line
The calculated fault location can be displayed using one of several options selected using
this setting.