Settings - Siemens 7SC80 Manual

[7sc80-cfc-tap-140214, 1, en_US]
Figure 2-118
Comparator 2 is introduced to compare V1 with the minimum voltage and block tap up commands if the tap
changer loses the bus voltage. Comparator 3 blocks tap up commands from the tap changer if the transformer
bus voltage exceeds the maximum acceptable value.
The application logic can be configured to control the line end voltage. In this instance, signals 2580
Vthr , 2581 Vmeas > Vthr and 2582 Vmeas < Vthr can be transmitted from the line end controller via
IEC 61850 "GOOSE". Comparators 2 and 3 ensure that the local bus voltage is within acceptable limits.
Tap up/down commands can be configured in the matrix to control the binary outputs directly. In order to
avoid the possibility of issuing duplicate or opposite commands to the tap change mechanism, the existing tap
change controller or voltage regulator should be blocked in the application with the 7SC80 tap changer.
2.22.3

Settings

Addr. Parameter
1250 Tap Changer
1251 T Pulse Tap Chg
1252 T Dead CntPulse
1253 MaxNo TChg UP
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
Sample CFC tap changer
Setting Options
OFF
ON
0.00 .. 900.00 sec
0.00 .. 100.00 sec
0 .. 100
Default Setting Comments
OFF Tap Changer
10.00 sec Tap changer pulse width
1.00 sec Deadtime between counter pulses
10 Maximum number of Tap Changer
Up-Steps
Functions
2.22 Tap Changer
Vmeas =
353