ABB RED650 Applications Manual

via the extinguishing capacitors in the circuit breakers. This voltage
can be as high as 30% or more of the base line voltage.
Because the setting ranges of the threshold voltages UHighBusEnerg/
UHighLineEnerg and ULowBusEnerg/ULowLineEnerg 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.
UMaxEnerg
This setting is used to block the closing when the voltage on the live side is above
the set value of UMaxEnerg.
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.
12.2 Autorecloser for 1 phase, 2 phase and/or 3 phase
operation SMBRREC
IP14559-1 v6
12.2.1 Identification
M14890-1 v7
Function Description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Autorecloser for 1 phase, 2 phase and/or 3
phase
SMBRREC
5(0 -->1)
IEC15000204 V1 EN-US
79
12.2.2 Application
M12391-3 v8
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 flashovers,
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
1MRK 505 393-UEN B Section 12
Control
Line differential protection RED650 2.2 IEC 229
Application manual

ABB RED650 Specifications

General

Brand	ABB
Model	RED650
Category	Protection Device
Language	English