Settings P54x/EN ST/La4
MiCOM P543, P544, P545, P546
(ST) 4-53
ST
Setting range
Menu text Default setting Step size
Min. Max.
CB1 CS2 Status Disabled Enabled or Dis abled
Setting to enable or disable the stage 2 synchronism check elements for auto-reclosing
and manual closing CB1.
CB1 CS2 Angle 20° 0° 90° 1°
Maximum permitted phase angle between Line and Bus 1 voltages for second stage
synchronism check element to reclose CB1
CB1 CS2 VDiff 6.5 V
1 V 120 V 0.5 V
Check Synch Voltage differential setting decides that stage 2 System Check Synchronism
logic for CB1 is blocked if Vdiff> is one of the selected options in setting CB1 CS Volt.Blk
(48 8 E), and voltage magnitude difference between line and bus 1 voltage is above this
setting.
CB1 CS2 SlipCtrl Enabled Enabled or Disabled
Setting to enable or disable blocking of synchronism check stage 2 for reclosing CB1 by
excessive frequency difference (slip) between line and bus voltages (refer to setting
CB1 CS2 SlipFreq)
CB1 CS2 SlipFreq 50 mHz 5 mHz 2 Hz 5 mHz
If CB1 CS2 Slip Ctrl is enabled, synchronism check stage 2 is blocked for reclosing CB1 if
measured frequency difference between line an ter than this setting. d bus voltages is grea
CB1 CS2 Adaptive Disabled Enabled or Disabled
Setting to enable or disable Adaptive CB closing with System Check Synchronism stage
2 closing for CB1: logic uses set CB1 CI Time to issue CB1 close command at such a
time that the predicted phase angle difference when CB1 main contacts touch is as close
as possible to 0 degree sing is abled, the logic issues CB1 e s. If Adaptive clo dis clos
command as soon as p e angle comes withi et limit at CB1 CS2 Angle . has n s
CB1 Cl Time 50.0 ms 10.0 ms 0.5 s 1.0 ms
This sets CB1 closing time, from receipt of CB1 close command until main contacts touch.
Sys Checks CB2 Disabled Enabled or Disabled
Setting to enable or disable both stages of system checks for reclosing CB2.
If System Checks CB2 i sabled, all ot ed s set to Di her menu settings associat with
synchronism checks for CB2 become invisible, and a 4) signal DDB (148
SChksInactiveCB2 is set.
CB2 CS Volt. Blk V<
V< , V> , Vdiff.> , V< and V>, V< and
Vdiff> , V> and Vdiff> , V< V> and Vdiff> ,
None
Setting to determine which, if any, conditions should block synchronism check for CB2
(undervoltage V<, overvoltage V>, and/or voltage differential Vdiff etc) for the line and bus
voltages.
CB2 CS1 Status Enabled Enabled or Disabled
Setting to enable or disable the stage 1 synchronism check elements for auto-reclosing
and manual closing CB2.
CB2 CS1 Angle 20° 0° 90° 1°
Maximum permitted phase angle between Line and Bus 2 voltages for first stage
synchronism check element to reclose CB2.
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