Configuration
60
7SS52 V4 Manual
C53000-G1176-C182-3
4.3.7 Normalized Current
Normally, the configuration tool determines the so-called normalized current
automatically by searching for the current transformer with the highest primary
nominal current when you exit the configuration. All parameters with the dimension l/
lno refer to this reference value. You can select any other normalized current in the
configuration tool under Tools → Set Reference Value. When exiting the
configuration you can choose between the calculated value or the one you have
defined in the dialog Specifying a reference Value (Figure 4-13, page 60). A lower
value allows you for example to increase the sensitivity of the differential current
supervision because it has a lower setting limit of 5% l/lno.
The normalized current which you define here may not exceed 5 times the value of the
configured maximum rated transformer current.
Figure 4-13 Select Reference Value
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