Autorecloser For 1 Phase, 2 Phase And/Or 3 Phase Operation Smbrrec (79); Identification; Application - ABB REB670 Applications Manual

Section 12
Control
12.2
12.2.1
12.2.2
300
Because the setting ranges of the threshold voltages VLiveBusEnerg/VLiveLineEnerg and
VDeadBusEnerg/VDeadLineEnerg partly overlap each other, the setting conditions may
be such that the setting of the non-energized threshold value is higher than that of the
energized threshold value. The parameters must therefore be set carefully to avoid
overlapping.
VMaxEnerg
This setting is used to block the closing when the voltage on the live side is above the set
value of VMaxEnerg.
tAutoEnerg and tManEnerg
The purpose of the timer delay settings, tAutoEnerg and tManEnerg, is to ensure that the
dead side remains de-energized and that the condition is not due to a temporary
interference. Should the conditions not persist for the specified time, the delay timer is
reset and the procedure is restarted when the conditions are fulfilled again. Circuit breaker
closing is thus not permitted until the energizing condition has remained constant
throughout the set delay setting time.
Autorecloser for 1 phase, 2 phase and/or 3 phase
operation SMBRREC (79)

Identification

Function Description
Autorecloser for 1 phase, 2 phase and/or 3
phase

Application

In certain countries it is standard practice to provide delayed restoration after busbar
protection operation for internal fault, reason being that many busbar faults are of the
transient natures that is, animals, birds, storm, flying objects, etc. In such applications,
typically one pre-selected feeder is automatically closed with certain time delay in order
to try to re-energize the faulty bus. Typically, the longest overhead line is selected in order
to limit the fault current in case of permanent busbar fault. If the first feeder is successfully
IEC 61850 IEC 60617
identification identification
SMBRREC
O->I
SYMBOL-L V1 EN
1MRK 505 337-UUS -
ANSI/IEEE C37.2
device number
79
Application manual