Table 174: SMBRREC Group settings (advanced)
Name Values (Range) Unit Step Default Description
NoOfShots 1
2
3
4
5
-
- 1 Maximum number of reclosing shots 1-5
StartByCBOpen Off
On
- - Off To be set ON if AR is to be started by CB
open position
CBAuxContType NormClosed
NormOpen
- - NormOpen Select CB auxilary contact type NC/NO for
CBPOS input
CBReadyType CO
OCO
- - CO Select type of circuit breaker ready signal
CO/OCO
t2 3Ph 0.00 - 6000.00 s 0.01 30.00 Open time for shot 2, three-phase
t3 3Ph 0.00 - 6000.00 s 0.01 30.00 Open time for shot 3, three-phase
t4 3Ph 0.00 - 6000.00 s 0.01 30.00 Open time for shot 4, three-phase
t5 3Ph 0.00 - 6000.00 s 0.01 30.00 Open time for shot 5, three-phase
tInhibit 0.000 - 60.000 s 0.001 5.000 Inhibit reclosing reset time
Follow CB Off
On
- - Off Advance to next shot if CB has been
closed during dead time
AutoCont Off
On
- - Off Continue with next reclosing-shot if
breaker did not close
tAutoContWait 0.000 - 60.000 s 0.001 2.000 Wait time after close command before
proceeding to next shot
UnsucClByCBChk NoCBCheck
CB check
- - NoCBCheck Unsuccessful closing signal obtained by
checking CB position
BlockByUnsucCl Off
On
- - Off Block AR at unsuccessful reclosing
ZoneSeqCoord Off
On
- - Off Coordination of down stream devices to
local protection unit’s AR
10.2.6 Operation principle
10.2.6.1 Start auto-reclosing and conditions for start of a reclosing cycle
The usual way in which to start a reclosing cycle, or sequence, is to start it when a line
protection tripping has occurred, by applying a signal to the START input.
For a new auto-reclosing cycle to be started, a number of conditions need to be met.
They are linked to dedicated inputs. The inputs are:
• CBREADY: CB ready for a reclosing cycle, for example, charged operating gear
• CBPOS: to ensure that the CB was closed when the line fault occurred and start
was applied
• No blocking or inhibit signal shall be present.
1MRK 511 287-UEN A Section 10
Control
229
Technical manual
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