P54x/EN ST/La4 Settings
(ST) 4-10
MiCOM P543, P544, P545, P546
ST
Setting range
Menu text Default setting
Min. Max.
Step size
GPS Fail Timer 0 s 0 s 9999 s 1 s
Time delay setting after which the ‘GPS Alarm ss of ’ – DDB 310 is asserted following a lo
GPS signal or initiation by the GPS transient fail alarm function when active(see below).
GPS Trans Fail Disabled Enabled or Disabled
To enable (activate) or disable (turn off) the transient GPS Fail alarm function.
GPS Trans Count 1 s 1 s 100 s 1 s
Sets the count for the number of failed GPS signals which must be exceeded in the set
‘GPS Trans Timer’ window after which the ‘GPS Fail Timer’ is initiated.
GPS Trans Timer 1 s 0 s 9999 s 1 s
Sets the rolling time window in which the ‘GPS Trans Count’ must be exceeded after which
the ‘GPS Fail Timer’ is initiated.
IM1 Cmd Type Permissive Direct or Permissive
Setting that defines the operative mode of the received InterMiCOM_1 signal.
When ‘Direct’ tripping is chosen, for security reasons 2 consecutive valid messages have
re a in the signal sta ill be ackn ed. Tha impose to be received befo change tus w owledg t will
an additional 1-2 ms delay comparing to ‘Permissive’ mode.
Set ‘Direct’ in Direct Transfer Tripping (Intertripping) applications.
Set ‘Permissive’ to accommodate any Permissive or Blocking scheme.
IM1 FallBackMode Default Default or Latching
Setting that defines the status of IM1 signal in case of heavy noise and message
synchronization being lost.
IM1 status will ntained new va ssage If set to ‘Latching’ the last valid be mai until the lid me
is received.
If set to ‘Default’, the IM1 status, pre-defined by the user in ‘IM1 Default Value’ cell will be
set. A new valid message will replace ‘IM1 Default Value’, once the channel recovers.
IM1 Default Value 0 0 1 1
Setting that defines the IM1 fallback status.
IM2 to IM8 Cell as for IM1 above
Note: The IM1 – IM8 settings in the table above are applied the same to the
8 InterMiCOM
64
commands grouped as Channel 1 as to the 8
Inte commands . If IM1 Default Value
1.3 P
T
in l the following it at becom once e in the
config
e hronization setti
Fault locator settings.
There are four groups of protection settings, with each group containing the same setting
cells. One group of protection settings is selected as the active group, and is used by the
protection elements. The settings for group 1 is shown. The settings are discussed in the
same order in which they are displayed in the menu.
rMiCOM
64
grouped as Channel 2
is set to 0, then IM1 Channel 1, and IM1 Channel 2 will both default to 0.
rotection GROUP settings
he protectio
n settings clude al ems th e active nabled
uration column of the relay menu database:
Protection element settings
Programmable Scheme logic (PSL) that also includes InterMiCOM
64
signals mapping
Protection Schemes
Auto-reclose and ch ck sync ngs
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