P54x/EN ST/La4 Settings
(ST) 4-78
MiCOM P543, P544, P545, P546
ST
nu text Default setting AvailableMe settings
Flt Rec Extended Enabled Enabled or Disabled
When this setting is disa , the fault record c e loca e,
included in the fault record.
bled ontains a snap shot of th l, remot
differential and bias currents taken 1 cycle after the trip.
With this setting enabled an additional snap shot of local, remote, differential and bias
currents taken at the time the differential trips is
DDB 31 - 0 11111111111111111111111111111111
Chooses whether any individual DDBs should be deselected as a stored event, by set
the relevant bit to 0 (zero). Typically used for repetitive recurrent changes such as an
Opto input assigned for Minute Pulse clock synchronizing.
ting
Up to… DDB 1791 - 1760 111 111111 11111111111 1111111 11111
As above, for all DDBs through to 1791.
1.4.6 Measurements
Menu text Default settings Available settings
MEASUREMENT SETUP
Default Display Description
Description/Plant Reference/
Frequency/Access Level/3Ph + N
Current/3Ph Voltage ower/Date /P
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. H
owever once the 15 minute timeout elapses the default display will revert to that
ng.selected by this setti
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/A/B/C
Using this setting the phase reference for all angular measurements by the relay can be
selected. This reference is for Measurements 1. Measurements 3 uses always IA local as
a reference
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 chapter
(P54x/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.
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