Setting Guidelines; Tr1Atcc Or Tr8Atcc General Settings - ABB RET650 Applications Manual

Section 11
Control
11.2.3
11.2.3.1
224
rated load (current measured on HV-side) decrements the ContactLife counter with
1.
The NoOfOperations counter simply counts the total number of operations
(incremental counter).
Both counters are stored in a non-volatile memory as well as, the times and dates of
their last reset. These dates are stored automatically when the command to reset the
counter is issued. It is therefore necessary to check that the IED internal time is
correct before these counters are reset. The counter value can be reset on the local
HMI under Main menu/Reset/Reset counters/TransformerTapControl(YLTC,
84)/Reset Counter and ResetCLCounter
Both counters and their last reset dates are shown on the local HMI as service
values under Main menu/Test/Function status/Control/
TransformerTapControl(YLTC,84)/CLCNT_VALandMain menu/Test/
Function status/Control/TransformerTapControl (YLTC,84)/TCMYLTC:x/
TCLYLTC:x/CNT_VAL

Setting guidelines

TR1ATCC or TR8ATCC general settings

TrfId: The transformer identity is used to identify transformer individuals in a
parallel group. Thus, transformers that can be part of the same parallel group must
have unique identities. Moreover, all transformers that communicate over the same
horizontal communication (GOOSE) must have unique identities.
Xr2: The reactance of the transformer in primary ohms referred to the LV side.
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.
1MRK 504 169-UEN A
Transformer protection RET650 2.2 IEC
Application manual
SEMOD171503-1 v1
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