operation time delay setting is preferable, where the
tSCA
setting is used. A typical value
for the
tSCM
may be
1
second and a typical value for the
tSCA
may be
0.1
second.
Energizing check settings
AutoEnerg
and
ManEnerg
Two different settings can be used for automatic and manual closing of the circuit breaker.
The settings for each of them are:
•
Disabled
, the energizing function is disabled.
•
DLLB
, Dead Line Live Bus: the line voltage is below 40% of the line base voltage
UBase
according to the setting
GblBaseSelLine
about the Global Base Value group,
and the bus voltage is above 80% of the bus base voltage
UBase
, according to the
setting
GblBaseSelBus
.
•
DBLL
, Dead Bus Live Line, the bus voltage is below 40% of the bus base voltage
UBase
, according to the setting
GblBaseSelBus
about the Global Base Value group,
and the line voltage is above 80% of the line base voltage
UBase
, according to the
setting
GblBaseSelLine
.
•
Both
, energizing can be done in both directions,
DLLB
or
DBLL
.
ManEnergDBDL
If the parameter is set to
Enabled
, manual closing is enabled when line voltage is below
40% of the line base voltage
UBase
, according to the setting
GblBaseSelLine
about the
Global Base Value group, and when bus voltage is below 40% of the bus base voltage
UBase, according to the setting
GblBaseSelBus
and also
ManEnerg
is set to
DLLB
,
DBLL
or
Both
.
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.
10.2
Autorecloser for 3-phase operation SMBRREC (79)
1MRK 511 286-UUS A
Section 10
Control
197
Application manual
Summary of Contents for REC650 ANSI
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Page 66: ...Section 3 1MRK 511 286 UUS A REC650 setting examples 60 Application manual...
Page 71: ...IED IED ANSI05000460 V2 EN 1MRK 511 286 UUS A Section 4 Analog inputs 65 Application manual...
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