Appendix B -Settings and Signals
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
voltages is greater than this setting.
CB2 CS2 Status 48 A2 Disabled
Enabled
Setting to enable or disable the stage 2 synchronism check elements for auto-reclosing and manual closing CB2.
CB2 CS2 Angle 48 A3 20
From 0 to 90 in steps of 1
[Courier Number (angle)]
Maximum permitted phase angle between Line and Bus 2 voltages for second stage synchronism check element to reclose CB2.
CB2 CS2 VDiff 48 A4 6.5
From 1 to 120 in steps of 0.5
[Courier Number (voltage)]
Check Synch Voltage differential setting decides that stage 2 System Check Synchronism logic for CB2 is blocked if Vdiff> is one of the
selected options in setting CB2 CS Volt. Blk (48 9C), and voltage magnitude difference between line and bus 2 voltage is above this setting.
CB2 CS2 SlipCtrl 48 A5 Enabled
Enabled
Setting to enable or disable blocking of synchronism check stage 2 for reclosing CB2 by excessive frequency difference (slip) between line
and bus voltages (refer to setting CB2 CS2 SlipFreq)
CB2 CS2 SlipFreq 48 A6 0.05
From 0.005 to 2 in steps of 0.005
[Courier Number (frequency)]
If CB2 CS2 SlipCtrl is enabled, synchronism check stage 2 is blocked for reclosing CB2 if measured frequency difference between line and bus
voltages is greater than this setting.
CB2 CS2 Adaptive 48 A7 Disabled
Enabled
Setting to enable or disable Adaptive CB closing with System Check Synchronism stage 2 closing for CB2: logic uses set CB2 CI Time to issue
CB2 close command at such a time that the predicted phase angle difference when CB2 main contacts touch is as close as possible to 0
degrees. If adaptive closing is disabled, the logic issues CB2 close command as soon as phase angle comes within set limit at CB2 CS2 Angle.
CB2 Cl Time 48 A8 0.05
From 0.01 to 0.5 in steps of 0.001
[Courier Number (time-seconds)]
This sets CB2 closing time, from receipt of CB2 close command until main contacts touch
Num CBs 48 B1 CB1 Only
CB2 Only
CB1&CB2
This setting is only visible if the CB Control by cell (Cell 0701 under CB CONTROL column) is ‘Enabled’.
If visible, the setting dictates which of the circuit breakers (CB1 only, CB2 only, or both CB1 & CB2) can be manually closed.
CB1M SC required 48 B2 Disabled
Enabled
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 48 B3 Disabled
Enabled
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 48 B4 Disabled
Enabled
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 48 B5 Disabled
Enabled
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 48 B6 Disabled
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