ESTAmat PFC-N
D.No.13157 - Rev. 02
Operating Instruction MV1181
Page 32 of 36
8.4 Transformer compensation
The compensation of a transformer can be solved with the ESTAmat PFC-N in two ways:
8.4.1 Setting a reactive power offset
Setting reactive power offset. This is added to the required compensation power within the
system.
Procedure:
Determine the required capacitive reactive power to compensate the transformer. Enter the
calculated value in the menu item "
312
". Control will start immediately with the additional
required reactive power.
Features:
The set here reactive power offset is always added to the measured reactive power. Therefore,
it's always the Pf appears before the transformer. This means that the system can capacitive,
but the measurement of the utility the required Pf recoded.
8.4.2 Mixed measurement:
By the current measurement on medium voltage side, is the from the transformer caused
reactive power measured and regulated by the connected compensation system.
Procedure:
Connect the measurement of the controller
as shown in the diagram adjacent. Then
start the automatic initialization. The
vector group ot the transformer is
automatically considered.
Connection:
When auto-initialization will be aborted,
under item 11.2, the most common
transformer vector groups are listed.
20kV / 50Hz
400V / 50Hz
BLR-CX
Last
Transformator
Transformer
Load
PFC-N
