Ct Ratio; Vt Ratio - CARLO GAVAZZI WM4-96 - PROGRAMMING Manual

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Programming
S
1.2..
S
..2.1
If the CT ratio is modified, then all the MIN/MAX val-
ues and the partial energy meters are reset.
S
Digital inputs prog.
21
mary of the CT (current trans-
former) being connected is 300A
F
and the secondary is 5A, the CT
ratio corresponds to 60 (obtained
from the calculation: 300/5).
Choose the function CT RATIO by
means of the
press
the desired value by means of the
with
go back to the main menu, press
F
the primary of the VT (voltage
transformer) being connected is
F
20kV and the secondary is 100V,
the VT ratio will be 200 (given by
20000/100). If there is no VT, the
ratio will be "1.0".
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CT ratio

This function allows you to
select the value of the CT
ratio. Example: if the pri-
S
to confirm then select
and keys and confirm
S
. To reset your choice and
.
VT-PT ratio
This function allows the
user to select the multiplier
value of the VT. Example: if
Min/Max values
33
and keys;
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