Appendix B - Settings and Signals
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
If set to “Enable”, allows the first programmed reclose attempt (“shot”) to be omitted if the “Skip Shot 1” input is high when the Increment is
triggered at the start of an autoreclose cycle:
Multi Phase AR 49 5C Allow Autoclose
BAR 2 and 3Ph
BAR 3 Phase
This setting determines whether auto-reclosing is permitted or blocked for two phase or three phase faults.
Multi Phase AR 49 5C Allow Autoclose
BAR 2 and 3Ph
BAR 3 Phase
This setting determines whether auto-reclosing is permitted or blocked for two phase or three phase faults.
Discrim Time 49 5D 0.1
From 0.005 to 5 in steps of 0.005
[Courier Number (time-seconds)]
Discrim Time = Discriminating Time. This is a setting which determines whether a fault on another phase (evolving or developing fault) after
single phase trip and
auto-reclose has been initiated by a single phase fault stops the single phase cycle and starts a three phase auto-reclose cycle provided this
second fault (evolving fault) occurs BEFORE the Discrimination Time elapsed. It forces a lockout if second fault (evolving fault) occurs AFTER
Discrimination Time has elapsed but before Single Phase Dead Time elapses.
CB IS Time 49 60 5
From 0.1 to 200 in steps of 0.1
[Courier Number (time-seconds)]
CB IS Time = CB In Service Time. This is a timer setting for which a CB must remain closed (and optionally the line be live) before it is
considered to be In Service.
CB IS MemoryTime 49 61 0.5
From 0.01 to 1 in steps of 0.01
[Courier Number (time-seconds)]
CB IS Memory Time is a timer setting which allows a CB In Service state to be remembered for a short period following changeover of the CB
auxiliary switch contacts to a CB Open state. This may occasionally be necessary for a few types of CB with exceptionally fast acting auxiliary
switch contacts which allow the auto-reclose scheme logic to detect the CB opening before it detects an associated protection operation.
DT Start by Prot 49 62 Protection Reset
Protection Op
Disable
DT Start by Prot = Dead Time Start By Protection action. If DT Start by Prot is set to Disable, a dead time start is not directly affected by
protection operation or reset, but is enabled by other conditions or events (see settings: 3PDTStart WhenLD and
DTStart by CB Op).
If DT Start by Prot is set to Protection Op, the dead time starting is enabled when the auto-reclose initiation signal is received from the
protection. If DT Start by Prot is set to Protection Reset, the dead time starting is inhibited until the auto-reclose initiation signal from the
3PDTStart WhenLD 49 63 Disabled
Enabled
3PDTStart When LD = three phase auto-reclose dead time starts when the line has gone dead. If Enabled, the line is required to go dead
before a 3 phase auto-reclose dead time can start. If Disabled, dead time can start when other selected conditions are satisfied, irrespective
3PDTStart WhenLD 49 63 Disabled
Enabled
3PDTStart When LD = three phase auto-reclose dead time starts when the line has gone dead. If Enabled, the line is required to go dead
before a 3 phase auto-reclose dead time can start. If Disabled, dead time can start when other selected conditions are satisfied, irrespective
Dead Line Time 49 66 5
From 1 to 9999 in steps of 1
[Courier Number (time-seconds)]
When 3PDTStart When LD is Enabled, and the line does not go dead within the set Dead Line Time period, then the logic will force the auto-
reclose sequence to lockout after expiry of this time.
Dead Line Time 49 66 5
From 1 to 9999 in steps of 1
[Courier Number (time-seconds)]
When 3PDTStart When LD is Enabled, and the line does not go dead within the set Dead Line Time period, then the logic will force the auto-
reclose sequence to lockout after expiry of this time.
SP AR Dead Time 49 67 0.5
From 0 to 10 in steps of 0.01
[Courier Number (time-seconds)]
Dead time setting for single phase auto-reclose.
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