Siemens siprotec 7SD610 User Manual page 145

Differential protection
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For the 3rd cycle:
For the 4th cycle:
5th to 8th reclosure
If more than four cycles were set during configuration of the functional scope, the dead
cycle
times preceding the fifth (5th) through the ninth (9th) reclosing attempts are equal to
the open breaker time which precedes the fourth (4th) reclosing attempt.
Notes on the Infor-
The most important information about automatic reclosure is briefly explained insofar
mation Overview
as it was not mentioned in the following lists or described in detail in the preceding text.
„>BLK 1.AR-cycle" (No. 2742) to „>BLK 4.-n. AR" (No. 2745)
The respective auto-reclose cycle is blocked. If the blocking state already exists when
the automatic reclosure function is initiated, the blocked cycle is not executed and may
be skipped (if other cycles are permitted). The same applies if the automatic reclosure
function is started (running), but not internally blocked. If the block signal of a cycle
appears while this cycle is being executed (in progress), the automatic reclosure func-
tion is blocked dynamically; no further automatic reclosures cycles are then executed.
„AR 1.CycZoneRel" (No. 2889) to „AR 4.CycZoneRel" (No. 2892)
7SD610 Manual
C53000-G1176-C145-4
3468 2.AR Tdead3Trip
3469 2.AR: Tdead EV.
3470 2.AR: CB? CLOSE
3471 2.AR SynRequest
3472 3.AR: START
3473 3.AR: T-ACTION
3475 3.AR Tdead 1Flt
3476 3.AR Tdead 2Flt
3477 3.AR Tdead 3Flt
3478 3.AR Tdead1Trip
3479 3.AR Tdead3Trip
3480 3.AR: Tdead EV.
3481 3.AR: CB? CLOSE
3482 3.AR SynRequest
3483 4.AR: START
3484 4.AR: T-ACTION
3486 4.AR Tdead 1Flt
3487 4.AR Tdead 2Flt
3488 4.AR Tdead 3Flt
3489 4.AR Tdead1Trip
3490 4.AR Tdead3Trip
3491 4.AR: Tdead EV.
3492 4.AR: CB? CLOSE
3493 4.AR SynRequest
2.10 Automatic Reclosure Function (optional)
Dead time after three-pole tripping
Dead time after evolving fault
CB ready interrogation before reclosing
Sync. check after three-pole tripping
Start in 3rd cycle generally allowed
Action time for the 3rd cycle
Dead time after single-phase pickup
Dead time after two-phase pickup
Dead time after three-phase pickup
Dead time after single-pole tripping
Dead time after three-pole tripping
Dead time after evolving fault
CB ready interrogation before reclosing
Sync. check after three-pole tripping
Start in 4th cycle generally allowed
Action time for the 4th cycle
Dead time after single-phase pickup
Dead time after two-phase pickup
Dead time after three-phase pickup
Dead time after single-pole tripping
Dead time after three-pole tripping
Dead time after evolving fault
CB ready interrogation before reclosing
Sync. check after three-pole tripping
145

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