V00510
Live/ Dead Ccts
Enabled
Reclose Checks
LiveDead Ccts OK
No system Checks
Enabled
&
1
AR SysChecks OK
AR Sys Checks
SysChk on Shot 1
Enabled
&
AR SeqCounter 1
1 AR SysChecks OK
AR with ChkSyn
Enabled
AR with SysSyn
Enabled
AR Sync Check
Check Sync 1 OK
Check Sync 2 OK
&
1
&
Figure 156: AR System Check logic
7.7 RECLAIM TIMER INITIATION
The tReclaim Extend setting allows you to control whether the timer is suspended from the protection start
contacts or not
. When a setting of No Operation is used, the reclaim timer operates from the instant the CB is
closed and will continue until the timer expires. The Reclaim Time must therefore be set in excess of the time-
delayed protection operating time, to ensure that the protection can operate before the Autoreclose function is
reset.
For certain applications it is advantageous to set tReclaim Extend to On Prot Start. This facility allows the
operation of the reclaim timer to be suspended after CB re-closure by a signal from the main protection start or
SEF protection start signals. This feature ensures that the reclaim time cannot time out and reset the Autoreclose
before the time delayed protection has operated.
Since the reclaim timer will be suspended, it is unnecessary to use a timer setting in excess of the protection
operating time, therefore a short reclaim time can be used. Short reclaim time settings can help to prevent
unnecessary lockout for a succession of transient faults in a short period, for example during a thunderstorm.
P14x Chapter 13 - Autoreclose
P14xEd1-TM-EN-1 299
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