During the functional test of the on-load tap changer, the most important setting parameters for the tap-
changer supervision such as Motor supervision time, Highest tap changer pos., and Maximum
output time must be checked and adjusted.
[scstuslt-100713-01.tif, 2, en_US]
Figure 10-8
Parameters of the Tap Changer
Tap-Position Display
You can route the current tap position as a position indication on a display page or into the operating indica-
tions. If no signal is present or the function is blocked, the device reports a position error. The display then
indicates an invalid tap position with --- (Figure 10-9). You can find information on which conditions lead to
an invalid tap position in the section Adjusting-Command Monitoring, Page 439.
[sc_osop_valid_position, 1, en_US]
Figure 10-9 Invalid Tap-Changer Position in the Device Display
Parameterize BCD Code
If the tap position of the tap changer is transmitted to the SIPROTEC 5 device via BCD code with prefix, then it
is sufficient to assign the binary inputs with the corresponding functions according to the routing. Corre-
sponding functions are for example:
•
BCD1
•
BCD2
•
BCD4
Functional Tests
10.10 Commissioning Hints for Voltage Control
SIPROTEC 5, High-Voltage Bay Controller, Manual 1077
C53000-G5040-C015-9, Edition 11.2017
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