UMG 103-CBM
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9. Configuration
The supply voltage required for operation is
obtained from the measured voltages L1-N, L2-N
and L3-N. At least one phase (L-N) must be within
the nominal voltage range (see chapter „7.2 Dis-
connect switch“ on page 27).
9.1
Current and voltage transformers
INFORMATION
Before configuring the current and voltage trans-
former ratios, be certain to connect the transform-
ers in compliance with the specifications on the
device rating plate and the technical data!
·A current transformer of 5/5 A is set at the fac-
tory.
·The pre-programmed voltage transformer ratio
must only be changed if voltage transformers
are connected.
·If the current measurement is made via two
current transformers, the total ratio of the current
transformers must be programmed in the device.
Example: The current is measured via two
current transformers. Both current transform-
ers have a ratio of 1000/5 A. The summation
measurement is carried out with a summation
current transformer of 5+5/5 A.
Primary current: 1000A + 1000A = 2000A
Secondary current: 5A
The device must be adjusted as follows:
adress 000 = 2000 (primary current)
adress 001 = 0005 (secondary current)
Fig. Display for configuring the current and
voltage transformers in the GridVis software.
INFORMATION
Devices with automatic frequency detection set
take about 5 seconds to determine the mains
frequency. During this time, the measured values
do not
maintain the guaranteed measurement
uncertainty.
UMG
S
2
I
S
1
P
1
P
2
Einspeisung 1
Supply 1
Einspeisung 2
Supply 2
1P
1
1P
2
(K)
(L)
(k)
(l)
1S
2
1S
1
1S
1
1S
2
2S
1
2S
2
2S
1
2S
2
(k)
(l)
(K)
(L)
2P
1
2P
2
Verbraucher A
Consumer A
Verbraucher B
Consumer B
INFORMATION
·The items that can be configured using the
GridVis
®
software include the current and volt-
age transformer ratios.
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