TD_MRN3-3_08.06_GB
19
5.2 Setting
procedure
In this paragraph the settings for all relay parameters
are described in detail. For parameter setting a pass-
word has to be entered first (please refer to 4.4 of de-
scription "
MR
-Digital Multifunctional Relays").
5.3 System
parameters
5.3.1 Display of residual voltage U
E
as primary quantity (U
prim
/U
sec
)
The residual voltage can be shown as primary measur-
ing value. For this parameter the transformation ratio of
the VT has to be set accordingly. If the parameter is
set to "sec", the measuring value indicated on the dis-
play is shown as rated secondary voltage.
Example:
The voltage transformer used is of 10 kV/100 V. The
transformation ratio is 100 and this value has to be set
accordingly. If still the rated secondary voltage should
be shown, the parameter is to be set to 1.
5.3.2
∆
∆∆
∆
/Y – Switch over
Depending on the mains voltage conditions, the input
voltage transformers can be operated in delta or Y
connection. The appropriate made can be selected
via the <+> and the <-> keys and it is stored with
<ENTER>.