Application and Setting Notes
Parameters of the Tap Changer Function Group
[scstuslt-100713-01.tif, 2, en_US]
Figure 8-92 Parameters of the Tap Changer
NOTE
If run positions, this means internal tap changer positions without voltage changes, are available, the
following must be observed:
If these tap changer positions contain a suffix a and c or + and -, and additional switching pulses are not
required, adjust the parameter for the feedback and motor supervision time to the actual motor runtime
when passing through a run position. Siemens recommends parameterization with capturing of the motor
sliding contact.
Parameter: Check switching authority
•
Default setting (_:104) Check switching authority = yes
With the Check switching authority parameter, you specify whether the switching authority (on site,
remote) is checked in case of an adjusting command (see also chapter 8.3.1 Command Checks and Switch-
gear Interlocking Protection).
Parameter: Control model
•
Default setting (_:108) Control model = SBO w. enh. security
Use the Control model parameter to specify the control model according to IEC 61850-7-2. The following
selection options are available:
•
direct w. normal secur.
•
SBO w. normal secur.
•
direct w. enh. security
•
SBO w. enh. security
•
status only
8.8.2
Control Functions
8.8 Transformer Tap Changers
1186 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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