Reclaim Timer Initiation; Figure 156: Ar System Check Logic - GE MiCOM P40 Agile Technical Manual

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AR Sys Checks

SysChk on Shot 1

AR SeqCounter 1

No system Checks

Live/ Dead Ccts

LiveDead Ccts OK

AR with ChkSyn

Check Sync 1 OK

AR with SysSyn

Check Sync 2 OK

Reclose Checks

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

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.

P14xEd1-TM-EN-1

Chapter 13 - Autoreclose

AR SysChecks OK

AR Sync Check

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