Operation Principle - ABB REC650 ANSI Technical Manual

1MRK 511 287-UUS A
Name Values (Range)
CBReadyType CO
OCO
t2 3Ph 0.00 - 6000.00
t3 3Ph 0.00 - 6000.00
t4 3Ph 0.00 - 6000.00
t5 3Ph 0.00 - 6000.00
tInhibit 0.000 - 60.000
Follow CB Disabled
Enabled
AutoCont Disabled
Enabled
tAutoContWait 0.000 - 60.000
UnsucClByCBChk NoCBCheck
CB check
BlockByUnsucCl Disabled
Enabled
ZoneSeqCoord Disabled
Enabled
10.2.6
10.2.6.1
Technical manual
Unit Step
- -
s 0.01
s 0.01
s 0.01
s 0.01
s 0.001
- -
- -
s 0.001
- -
- -
- -

Operation principle

Initiate auto-reclosing and conditions for initiation of a reclosing cycle
The usual way in which to initiate a reclosing cycle, or sequence, is to initiate it when a line
protection tripping has occurred, by applying a signal to the RI 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
• 52a: to ensure that the CB was closed when the line fault occurred and initiation was
applied
• No blocking or inhibit signal shall be present.
After the initiate has been accepted, it is latched in and an internal signal "Started" is set.
It can be interrupted by certain events, like an inhibit signal.
To initiate auto-reclosing by CB position Open instead of from protection trip signals, one
has to configure the CB Open position signal to inputs 52a and RI and set a parameter
StartByCBOpen = Enabled and CBAuxContType = NormClosed (normally closed, 52b).
Default Description
CO Select type of circuit breaker ready signal
CO/OCO
30.00 Open time for shot 2, three-phase
30.00 Open time for shot 3, three-phase
30.00 Open time for shot 4, three-phase
30.00 Open time for shot 5, three-phase
5.000 Inhibit reclosing reset time
Disabled Advance to next shot if CB has been closed
during dead time
Disabled Continue with next reclosing-shot if breaker did
not close
2.000 Wait time after close command before
proceeding to next shot
NoCBCheck Unsuccessful closing signal obtained by
checking CB position
Disabled Block AR at unsuccessful reclosing
Disabled Coordination of down stream devices to local
protection unit's AR
Section 10
Control
241