Tr1Atcc (90) Or Tr8Atcc (90) Setting Group - ABB REC670 Applications Manual

Section 14
Control
14.5.3.2
444
tAutoMSF: Time delay set in a follower for execution of a raise or lower command
given from a master. This feature can be used when a parallel group is controlled in the
master-follower mode, follow tap, and it is individually set for each follower, which
means that different time delays can be used in the different followers in order to avoid
simultaneous tapping if this is wanted. It shall be observed that it is not applicable in
the follow command mode.
OperationAdapt: This setting enables or disables adapt mode for parallel control with
the circulating current method or the master-follower method.
MFMode: Selection of Follow Command or Follow Tap in the master-follower mode.
CircCurrBk: Selection of action to be taken in case the circulating current exceeds
CircCurrLimit.
CmdErrBk: Selection of action to be taken in case the feedback from the tap changer
has resulted in command error.
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 V
Vmax.
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 V
UVPartBk: Selection of action to be taken in case the busbar voltage V
UVblock and Vmin.

TR1ATCC (90) or TR8ATCC (90) Setting group

General
Operation: Switching automatic voltage control for tap changer, TR1ATCC (90) for
single control and TR8ATCC (90) for parallel control function Enabled/Disabled.
1MRK 511 401-UUS A
exceeds
B
falls below Vblock.
B
is between
B
SEMOD171501-22 v8
Bay control REC670 2.2 ANSI
Application manual