UMG 103-CBM www.janitza.com
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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
S2
I
S
1
P1
P2
Einspeisung 1
Supply 1
Einspeisung 2
Supply 2
1P1
1P2
(K)
(L)
(k)
(l)
1S
2
1S1
1S1 1S2 2S1 2S2
2S1
2S2
(k)
(l)
(K)
(L)
2P
1
2P2
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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