P54x/EN ST/La4 Settings
(ST) 4-64
MiCOM P543, P544, P545, P546
ST
Setting range
Menu text Default setting
Min. Max.
Step size
CB1L SC Shot 1 Disabled Enabled or Disabled
This setting determines whether a system check (e.g. live bus / dead line etc) is required
for the first shot reclosu der. If re of CB1 as lea Enabled, system check is required for the
first shot reclosure. If D check is not required for the first shot reclosure. isabled, system
CB1L SC ClsNoDly Disabled Enabled or Disabled
If CB1L SC ClsNoDly is Enabled, CB1 can reclose as leader as soon as the synchro
check conditions are satisfied, without waiting for the dead time to elapse.
This option is sometimes required for the second line end to reclose onto a line with
delayed auto-reclosing (typical cycle: first line end recloses after the dead time with
live bus & dead line, then the second line end recloses immediately with live bus & live
line in synchronism).
CB1L SC CS1 Disabled Enabled or Disabled
This setting enables CB1 to auto-reclose as leader when the system satisfies all the
System Check Synchronism Stage 1 criteria as defined under CB1 CS1 Status settings in
the SYSTEM CHECKS . column
CB1L SC CS2 Disabled Enabled or Disabled
This setting enables CB1 to auto-reclose as leader when the system satisfies all the
System Check Synchronism Stage 2 criteria as defined under the setting CB1 CS2 status
in the SYSTEM CHECKS column.
CB1L SC DLLB Disabled Enabled or Disabled
This setting enables CB1 to auto-reclose as leader when the dead line & live bus1
conditions are satisfied as set in the SYSTEM CHECKS column.
CB1L SC LLDB Disabled Enabled or Disabled
This setting enables CB1 to auto-reclose as leader when the live line & dead bus1
conditions are satisfied as set in the SYSTEM CHECKS column.
CB1L SC DLDB Disabled Enabled or Disabled
This setting enables CB1 to auto-reclose as leader when the dead line & dead bus1
conditions are satisfied as set in the SYSTEM CHECKS column.
CB2L SC all Disabled Enabled or Disabled
This setting determines whether a system check (e.g. live bus / dead line or
sync check) is required for any auto-reclose of CB2 as leader. If Enabled, system check
is required for some or all reclosures. If Disabled, system check is not required for any
reclosures.
CB2L SC Shot 1 Disabled Enabled or Disabled
This setting determines system chec line etc) is required whether a k (e.g. live bus / dead
for the first shot reclosur er. If Enablede of CB2 as lead , system check is required for the
first shot reclosure. If Disabled, system check is not required for the first shot reclosure.
CB2L SC ClsNoDly Disabled Enabled or Disabled
If CB2L SC ClsNoDly is Enabled, CB2 can reclose as leader as soon as the synchro
check conditions are sa out waiting f pse. tisfied, with or the dead time to ela
This option is sometimes required for the second line end to reclose on a line with delayed
auto-reclosing (typical cycle: the first line end recloses after the dead time with live bus &
dead line, then the second line end recloses immediately with live bus & live line in
synchronism).
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