Siemens siprotec 7SD5 User Manual

2.15 Automatic Reclosure Function (optional)
309
7SD5 Manual
C53000-G1176-C169-1
„AR in progress“ (No. 2801)
This information appears following starting of the auto reclose function, i.e. with the
first trip command that can start the auto reclose function. If this reclosure was suc-
cessful (or any in the case of multiple cycles), this information resets with the expiry of
the last reclaim time. If no reclosure was successful or if reclosure was blocked, it ends
with the last – the final – trip command.
„AR Sync.Request“ (No. 2865)
Measuring request to an external synchronism check device. The information appears
at the end of a dead time subsequent to three-pole tripping if a synchronism request
was parameterized for the corresponding cycle. Reclosure only takes place when the
synchronism check device has provided release signal „>Sync.release“ (No
2731).
„>Sync.release“ (No. 2731)
Release of reclosure by an external synchronism check device if this was requested
by the output information „AR Sync.Request“ (No. 2865).
2.15.3 Settings
Addresses which have an appended "A" can only be changed with DIGSI, under Ad-
ditional Settings.
Addr. Parameter Setting Options Default Setting Comments
3401 AUTO RECLOSE OFF
ON
ON Auto-Reclose Function
3402 CB? 1.TRIP YES
NO
NO CB ready interrogation at 1st trip
3403 T-RECLAIM 0.50 .. 300.00 sec 3.00 sec Reclaim time after successful AR
cycle
3404 T-BLOCK MC 0.50 .. 300.00 sec; 0 1.00 sec AR blocking duration after manual
close
3406 EV. FLT. RECOG. with PICKUP
with TRIP
with TRIP Evolving fault recognition
3407 EV. FLT. MODE Stops AutoRecl
starts 3p AR
starts 3p AR Evolving fault (during the dead
time)
3408 T-Start MONITOR 0.01 .. 300.00 sec 0.50 sec AR start-signal monitoring time
3409 CB TIME OUT 0.01 .. 300.00 sec 3.00 sec Circuit Breaker (CB) Supervision
Time
3410 T RemoteClose 0.00 .. 300.00 sec; ∞ 0.20 sec Send delay for remote close
command
3411A T-DEAD EXT. 0.50 .. 300.00 sec; ∞∞sec Maximum dead time extension
3420 AR WITH DIFF YES
NO
YES AR with differential protection ?
3421 AR w/ SOTF-O/C YES
NO
YES AR with switch-onto-fault overcur-
rent ?
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Siemens siprotec 7SD5 Specifications

General

Brand	Siemens
Model	siprotec 7SD5
Category	Relays
Language	English