OCBk: Selection of action to be taken in case any of the three phase currents on the
HV-side has exceeded
Iblock.
MFPosDiffBk: Selection of action to be taken in case the tap difference between a
follower and the master is greater than MFPosDiffLim.
OVPartBk: Selection of action to be taken in case the busbar voltage U
B
exceeds
Umax.
RevActPartBk: Selection of action to be taken in case Reverse Action has been
activated.
TapChgBk: Selection of action to be taken in case a Tap Changer Error has been
identified.
TapPosBk: Selection of action to be taken in case of Tap Position Error, or if the tap
changer has reached an end position.
UVBk: Selection of action to be taken in case the busbar voltage U
B
falls below
Ublock.
UVPartBk: Selection of action to be taken in case the busbar voltage U
B
is between
Ublock and Umin.
12.5.2.2 TR1ATCC or TR8ATCC Setting group
SEMOD171501-22 v8
General
Operation: Switching automatic voltage control for tap changer, TR1ATCC for
single control and TR8ATCC for parallel control function On/Off.
I1Base: Base current in primary Ampere for the HV-side of the transformer.
I2Base: Base current in primary Ampere for the LV-side of the transformer.
UBase: Base voltage in primary kV for the LV-side of the transformer.
MeasMode: Selection of single phase, or phase-phase, or positive sequence
quantity to be used for voltage and current measurement on the LV-side. The
involved phases are also selected. Thus, single phase as well as phase-phase or
three-phase feeding on the LV-side is possible but it is commonly selected for
current and voltage.
Q1, Q2 and Q3: Mvar value of a capacitor bank or reactor that is connected
between the power transformer and the CT, such that the current of the capacitor
bank (reactor) needs to be compensated for in the calculation of circulating
currents. There are three independent settings Q1, Q2 and Q3 in order to make
possible switching of three steps in a capacitor bank in one bay.
Section 12 1MRK 506 375-UEN A
Control
322 Railway application RER670 2.2 IEC
Application manual
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