•
Circuit-breaker position recognition for protection functions
•
Detection of manual closing
•
General settings
The following figure shows the structure of the Circuit-Breaker function group. The individual function blocks
in the image are described in the following chapters.
[dwfgalle-080812-01.tif, 1, en_US]
Figure 5-33
Structure of the Circuit-Breaker Function Group
The Circuit-breaker function group has interfaces with:
•
Measuring points
•
Protection function groups, for example, the Line protection function group
Interfaces with Measuring Points
The function group contains the measured values needed from the measuring points associated with this
function group.
If an application template is used, the function group is connected to the measuring point of the 3-phase line
current because this link is essential. It may be necessary to connect additional measuring points to the func-
tion group, depending on the nature of the user functions used. Configuration is carried out using the Func-
tion-group connections editor in DIGSI 5. For more information about this, refer to chapter 2.1 Function
Embedding in the Device.
If a user function, for example, synchronization, is used in the function group but the required measuring
point has not linked to it, DIGSI 5 reports an inconsistency. This inconsistency provides an indication of the
missing measuring-point connection.
The Circuit-breaker function group has interfaces with the following measuring points:
•
3-phase line current
The measurands from the 3-phase power system are supplied via this interface. The function group must
always be connected to this measuring point.
Function-Group Types
5.6 Function-Group Type Circuit Breaker, 1-/3-Pole
228 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
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