ABB REL650 - Autorecloser for 1;3-Phase Operation STBRREC (79)

UnsucClByCBCheck , Unsuccessful closing by CB check
The normal setting is NoCBCheck. The “auto-reclosing unsuccessful” event is then
decided by a new trip within the reset time after the last reclosing shot. If one wants to get
the UNSUCCL (Unsuccessful closing) signal in the case the CB does not respond to the
closing command, CLOSECMD, one can set UnsucClByCBCheck= CB Check and set
tUnsucCl for instance to 1.0 s.
Priority and time tWaitForMaster
In single CB applications, one sets Priority = None. At sequential reclosing the function
of the first CB, e.g. near the busbar, is set Priority = High and for the second CB Priority =
Low. The maximum waiting time, tWaitForMaster of the second CB is set longer than the
“auto-reclosing open time” and a margin for synchronism check at the first CB. Typical
setting is tWaitForMaster=2secat the energizing side and perhaps 15 or 300 seconds at the
synchrocheck , synchronizing side.
AutoCont and tAutoContWait , Automatic continuation to the next shot if the
CB is not closed within the set time
The normal setting is AutoCont = Disabled. The tAutoContWait is the length of time
SMBRREC (79) waits to see if the breaker is closed when AutoCont is set to Enabled.
Normally, the setting can be tAutoContWait = 2 sec.
11.3 Autorecloser for 1/3-phase operation STBRREC (79)
11.3.1 Identification
Function Description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Autorecloser for 1/3-phase operation STBRREC
O->I
SYMBOL-L V1 EN
79
11.3.2 Application
Automatic reclosing is a well-established method for the restoration of service in a power
system after a transient line fault. The majority of line faults are flashover arcs, which are
transient by nature. When the power line is switched off by the operation of line protection
and line breakers, the arc de-ionizes and recovers its ability to withstand voltage at a
somewhat variable rate. Thus, a certain dead time with a de-energized line is necessary.
Line service can then be resumed by automatic reclosing of the line breakers. The dead
1MRK 506 334-UUS A Section 11
Control
317
Application manual