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Voltage transformer
The phase to phase voltage (L-L) is indicated
on display of the UMG 96L as secondary and
primary voltage. The transformer ratio is calcu-
lated from the programmed primary and sec-
ondary voltage. In programming mode, the vol-
tage transformer settings are marked by the
symbol „VT“.
The standard version is preset by the manufac-
turer with a ratio of 400V/400V.
The secondary voltage is always indicated in
„V“. The corresponding symbol „V“ is not dis-
played.
The primary voltage is indicated in „V“ or „kV“.
The corresponding symbol is displayed in „V“
or „kV“.
Primary voltage
Secondary voltage
Phase to phase
Voltage transformer ratio
PRG
V
L1
L2
L3
VT
L-L
UMG96L Setting range voltage transformer
Version Type plate L-L secondary L-L primary
Standard version 196 .. 255V 400V 100V .. 60kV (400V)
Special version 90 .. 160V 200V, 220V 100V .. 60kV (200V)
Special version 45 .. 80V 100V, 110V 100V .. 60kV (100V)
Secondary voltage is 100V
Primary voltage is 10,0kV
Programming
In programming mode, please scroll to the vol-
tage transformer setting by pressing key 2.
Confirm selection with key 1.
The first digit of the primary voltage flashes and
can be changed by pressing key 2.
If key 1 is pressed again the next digit will be
selected and flashes.
If the entire digit flashes, you can move the
decimal point.
If no digit flashes anymore, you may shift to in-
dication and programming of the outputs by
pressing key 2.
Example: Voltage transformer ratio 100V/10kV
PRG
kV
L1
L2
L3
VT
L-L
Attention!
The program allows current and voltage
transformer ratio setting only, if the maxi-
mum phase power can reach up to
50.0MW and the sum power can reach a
maximum value of 150.0MW.
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