Voltage Measuring-Point Selection; Overview Of Functions; Function Description - Siemens 7SJ82 Manual

6.51

Voltage Measuring-Point Selection

Overview of Functions

6.51.1
The function block Voltage measuring-point selection can:
•
Provide the ability to switchover the voltage measuring points to be applied, if various voltage measuring
points are connected to the voltage interface of the function group
•
Select the correct voltage based on the switch position of the plant
If more than one voltage measuring points are connected to the same voltage interface of the function group,
use the Voltage measuring-point selection function block in the function group to select the correct voltage
based on the switch position of the plant.
The Voltage measuring-point selection is a common functionality for the function groups of the protected
objects.

Function Description

6.51.2
The Voltage measuring-point selection function block realizes the selection of voltage measuring points by a
logic block chart. The logic block chart controls the input
tions of disconnectors.
Example
Figure 6-334 shows an example of voltage measuring points selection for the function group Capacitor bank
in a double busbar application.
[dwbusbardouble.vsd, 2, en_US]
Figure 6-334
Connecting Measuring Points to Capacitor Bank Function Group
Figure 6-335 shows the connection of the function group Capacitor bank with several measuring points in
DIGSI. The ID of each measuring point appears in the bracket after the name.
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
Double Busbar with Capacitor Bank
Protection and Automation Functions
6.51 Voltage Measuring-Point Selection
>MP-ID selection depending on the switch posi-
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