Schrack Technik CX plus Series FRACXP06R-, Руководство пользователя

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Transformer compensation
The compensation of a transformer for which no fixed stage is available can be solved in two ways with
the CX plus:
S
ETTING OF THE REACTIVE POWER OFFSET
The current transformer is installed at the output side of the transformer

consequently, the reactive
power of the transformer is not measured by the CX plus.
By setting an offset reactive power = reactive power of the transformer (SETUP/312), this is added to
the measured reactive power (within the system).
Procedure:
Determine the inductive reactive power of the transformer. Enter the determined value in the SETUP
menu
“312” in order to also compensate the transformer.
Function:
The set offset reactive power (Q offset) is added to the measured reactive power and considered in the
control deviation. Therefore, the cos

is always shown before the transformer. This means, that the
cos

within the system may be capacitive, but the measurement of the electrical power supplier
measures the required cos

.