2 Functions
308
7SD5 Manual
C53000-G1176-C169-1
5th to 8th Reclo-
sure Cycle
If more than four cycles were set during configuration of the functional scope, the dead
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-
mation Overview
The most important information about automatic reclosure is briefly explained insofar
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)
The automatic reclosure is ready for the respective reclosure cycle. This information
indicates which cycle will be run next. For example, external protection functions can
use this information to release accelerated or overreaching trip stages prior to the cor-
responding reclose cycle.
„AR is blocked“
(No. 2783)
The automatic reclosure is blocked (e.g. circuit breaker not ready). This information
indicates to the operational information system that in the event of an upcoming
system fault there will be a final trip, i.e. without reclosure. If the automatic reclosure
has been started, this information does not appear.
„AR not ready“
(No. 2784)
The automatic reclosure is not ready for reclosure at the moment. In addition to the
„AR is blocked“
(No. 2783) mentioned above there are also obstructions during
the course of the auto-reclosure cycles such as „action time run out“ or „last reclaim
time running“. This information is particularly helpful during testing because no protec-
tion test cycle with reclosure may be initiated during this state.
3483 4.AR: START
Start in 4th cycle generally allowed
3484 4.AR: T-ACTION
Action time for the 4th cycle
3486 4.AR Tdead 1Flt
Dead time after single-phase pickup
3487 4.AR Tdead 2Flt
Dead time after two-phase pickup
3488 4.AR Tdead 3Flt
Dead time after three-phase pickup
3489 4.AR Tdead1Trip
Dead time after single-pole tripping
3490 4.AR Tdead3Trip
Dead time after three-pole tripping
3491 4.AR: Tdead EV.
Dead time after evolving fault
3492 4.AR: CB? CLOSE
CB ready interrogation before reclosing
3493 4.AR SynRequest
Sync. check after three-pole tripping
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