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With the parameter
Synchroch. aft. 3-pole d.t.
you can determine if a synchrocheck must be
carried out for the configured automatic reclosing cycle.
If during a 3-pole interruption in the system stability problems may be a concern, the synchrocheck should be
carried out. If only 1-pole reclosure cycles are possible or stability problems are not to be expected during the
3-pole dead time, for example, due to a highly intermeshed system or radial system, please select the param-
eter
none
.
Parameter Value
Description
none
During the automatic reclosing cycle a synchrocheck is not executed.
internal
In the configured automatic reclosing cycle, a synchrocheck is executed after a
3-pole dead time prior to the close command of the circuit breaker.
For the synchrocheck a synchrocheck stage of the internal synchronization
function is used, which is contained in the same function group as the circuit
breaker and the automatic reclosing function. The selection of the synchro-
check stage that is used in the automatic reclosing cycle occurs through the
following described parameter Internal synchrocheck.
external
In the configured automatic reclosing cycle, a synchrocheck is executed after a
3-pole dead time prior to the close command of the circuit breaker.
An external synchrocheck device initiates the synchrocheck. The external
synchrocheck device is connected with the binary signals
Synchrocheck
request
and
>Release by ext.sync.
. Detailed information about the
function can be found in Chapter
7.2.4.14 Closing Indication and Close
under the section Synchrocheck.
Parameter: Internal Synchrocheck
These parameters are only significant if the previously described parameter
(_:6571:110) Synchroch.
aft. 3-pole d.t.
is set to
internal
.
With the parameter
Internal Synchrocheck
, you can determine which function block of the synchroniza-
tion function for the automatic reclosing function is used after a 3-pole dead time. This selection is only
possible for function blocks of the synchronization function, and which are included in the same circuit-
breaker function group as the automatic reclosing function. The setting options of the parameter will be
generated dynamically, according to the actual parameterization.
Information List
No.
Information
Data Class
(Type)
Type
Ext
_:6661:51
Ext:Mode (controllable)
C
_:6661:501
Ext:>Release stages
I
_:6661:502
Ext:>1-pole trip permitted
I
_:6661:503
Ext:>1-pole AR only
I
_:6661:52
Ext:Behavior
O
_:6661:53
Ext:Health
O
_:6661:54
Ext:Inactive
O
7.2.9
Protection and Automation Functions
7.2 Automatic Reclosing Function
594
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
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