Settings P54x/EN ST/La4
MiCOM P543, P544, P545, P546
(ST) 4-55
ST
Setting range
Menu text Default setting
Min. Max.
Step size
CB1M SC required Disabled Enabled or Disabled
This setting determines whether a system check (e.g. live bus / dead line etc) is required
for any manual (operator-controlled) closure of CB1. If Enabled, system check is required
for closure. If Disabled, system check is not required.
CB1M SC CS1 Disabled Enabled or Disabled
This setting enables CB1 to close by manual control when the system satisfies all the
System Check Synchronism Stage 1 conditions as listed under the setting CB1 CS1
Status in the SYSTEM CHECKS column.
CB1M SC CS2 Disabled Enabled or Disabled
This setting enables CB1 to close by manual control when the system satisfies all the
System Check Synchronism Stage 2 conditions as listed under the setting CB1 CS2
Status in the SYSTEM CHECKS column.
CB1M SC DLLB Disabled Enabled or Disabled
This setting enables CB1 to close by manual control when the dead line & live bus1
conditions are satisfied as set in the SYSTEM CHECKS column.
CB1M SC LLDB Disabled Enabled or Disabled
This setting enables CB1 to close by manual control when the live line & dead bus1
conditions are satisfied as set in the SYSTEM CHECKS column.
CB1M SC DLDB Disabled Enabled or Disabled
This setting enables CB1 to close by manual control when the dead line & dead bus1
conditions are satisfied as set in the SYSTEM CHECKS column.
CB2M SC required Disabled Enabled or Disabled
This setting determines whether a system check (e.g. live bus / dead line etc) is required
for any manual (operator-controlled) closure of CB2. If Enabled, system check is required
for closure. If Disabled, system check is not required.
CB2M SC CS1 Disabled Enabled or Disabled
This setting enables CB2 to close by manual control when system satisfies all the System
Check Synchronism Stage 1 conditions as listed under the setting CB2 CS1 Status in the
SYSTEM CHECKS column.
CB2M SC CS2 Disabled Enabled or Disabled
This setting enables CB2 to close by manual control when the system satisfies all the
System Check Synchronism Stage 2 conditions as listed under setting CB2 CS2 status in
the SYSTEM CHECKS column.
CB2M SC DLLB Disabled Enabled or Disabled
This setting enables CB2 to close by manual control when the dead line & live bus2
conditions are satisfied as set in the SYSTEM CHECKS column.
CB2M SC LLDB Disabled Enabled or Disabled
This setting enables CB2 to close by manual control when the live line & dead bus2
conditions are satisfied as set in the SYSTEM CHECKS column.
CB2M SC DLDB Disabled Enabled or Disabled
This setting enables CB2 to close by manual control when the dead line & dead bus2
conditions are satisfied as set in the SYSTEM CHECKS column.
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