Settings P54x/EN ST/La4
MiCOM P543, P544, P545, P546
(ST) 4-9
ST
Setting range
Menu text
Min. Max.
Default setting Step size
Re-Configuration Three Ended
Three Ended, Two Ended (R1&R2) , Two
Ended (L&R2) or Two Ended (L&R1)
This setting is to ch
vice versa. An in de
ange eme from thre ended scheme or
ep e n of relay per se is given in chapter
the sch
xplanatio
e ended scheme to two
formance for each ca
P54x/EN OP.
The setting is invisible when 3 Terminal Scheme Setup is selected.
Channel Timeout 0.1 s 0.1 s 10 s 0.1 s
A rolling time window beyond which any of the 8 IM signals that are set to ‘Default’ will be
rres oviding that no valid
s , each out of 16 IM set to ‘Default’ will
cheme is selected, each out of 8 IM signals available that
’, but only for the
replaced by the co ponding ‘IM_X Default Value’ setting, pr
message is received on that channel in the meantime. The ‘Chnl Fail Alarm’ timer will be
also initiated.
If only one channel is u ed signals available that is
convert to corresponding ‘IM_X Default Value’
If a Dual redundant or 3 ended s
is set to ‘Default’ will convert to corresponding ‘IM_X Default Value
affected chan nel.
Alarm Level 25% 0% 100% 1%
Setting that is used to alarm for poor channel quality. If during a fixed
window the number of invalid messages divided by the total number of me
100 ms rolling
ssages that
(bas e ‘Baud Rate’ setting) incre e the
‘Cha d.
should be received
nnel Fail Alarm’ timer
ed upon th
will be initiate
ase abov threshold, a
Prop Delay Stats Enabled Enabled or Disabled
To enable (activate) or disable (turn off) the alarms of Maximum propagation delay time
MaxCh 1 PropDelay 15 ms 1 ms 50 ms 1 ms
When the protection communications are enabled, the overall propagation delay divided
by 2 is calculated and the maximum value is determined and displayed in Measurements 4
colum is
Max (DDB
n. This value is displaye
exceeded, an alarm
d and compa
Ch1 PropDelay
red against this setting. If the setting
1386) is raised.
MaxCh 2 PropDelay 15 ms 1 ms 50 ms 1 ms
When the protection communications are enabled, the overall propagation delay divided
by 2 is calculated and the maximum value is determined and displayed in Measurements 4
column. This value is displayed and compared against this setting. If the setting is
exceeded, an alarm MaxCh2 PropDelay (DDB 1387) is raised.
TxRx Delay Stats Enabled Enabled or Disabled
To enable (activate) or rn off) the a ference between the
hat
disable (tu larms of absolute dif
Transmission and Reception propagation delay. This setting is visible only in case t
GPS Sync is Enabled.
MaxCh1 Tx-RxTime 15 ms 1 ms 50 ms 1 ms
When the protection communications and GPS Sync are enabled, the absolute difference
between the Transmission and Reception propagation delay is calculated and the
maximum value is deter layed in Mea
pare setting , an alarm
mined and disp
d against this
surements 4 column. This value is
. If the setting is exceededdisplayed and com
MaxCh1 Tx-RxTime (DDB 1388) is raised.
MaxCh2 Tx-RxTime 15 ms 1 ms 50 ms 1 ms
When the protection communications and GPS Sync are enabled, the absolute difference
between the Transmission and Reception propagation delay is calculated and the
nts 4 column. This value is maximum value is determined and displayed in Measureme
displayed and compared against this setting. If the setting is exceeded, an alarm
MaxCh2 Tx-RxTime (DDB 1389) is raised.
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