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2
I.L. 40-386.12
When a reclosing sequence is initiated for any of the above conditions, the recloser goes
through different stages; Recloser dead time countdown, waiting for synchronism/HBDL/HLDB
(if selected with the sync-check option), closing of contacts and reset. If in the reset phase the
condition to initiate the next reclosure appears, the recloser proceeds to the next reclosure. Oth-
erwise, at the end of the reset time, the recloser returns to READY state, which marks the end
of the sequence.
The sequence can also end in the LOCKOUT state for any of the reasons explained in Section
2.5.6 (Lockout Mode).
During the reclosing sequence, the different stages are displayed with the corresponding count-
downs and set timers.
2. 7
TIMING DIAGRAM FOR A TYPICAL RECLOSING SYNC-CHECK SEQUENCE
Timing Diagram showing a typical Reclosing/Sync-check sequence according to the following
enabled settings and conditions.
Ready
NOTE:
In the example below, 2 reclosures were selected: Reclosure 1 (Recl 1) was initiated by
3RI only. Reclosure 2 (Recl 2) was initiated by 52b only with HLDB condition enabled and
a Recl 2 Wait Time set indefinitely, i.e., "No Time Limit".
3RI
52b
Relay
Close
HLDB
2-8
52b or 3RI
Either signals will initiate a new reclo-
sure.
Internal 3RI or External RI
Relevant Settings for this example:
Sync Set ?
Yes
Sync Time
2.0 Sec
Recl 1
3RI Only
Recl1 HLDB
No
Recl1 HBDL
No
Trip
Recl1 Sync
No
Recl 1
Reset
Table 2-5:
Recl 2
Recl2 HLDB
Recl2 HBDL
Recl2 Sync
Recl2 Wait
Recl 2
Wait Time
Sync Time
52b Only
Yes
No
No
No Time Limit
Reset
Ready
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