Page 6 = Peak value = Minimum value = Supply
Installation
Mounting place
The UMG96 is suitable for a fixed installation into low and medium voltage switchgear. Any mounting position
is possible.
Measurement and supply voltage
The measurement is laid out for three phase systems with neutral conductor (TN and TT mains). The measure-
ment and supply voltages must be connected to the UMG 96 via a separation (switch or power switch) and an
overcurrent protection (2-10A) within the building installation.The connection of the measurement and supply
voltages is carried out at the back side of the UMG 96 via shock protected spring clamps.
Current measurement
The current measurement is carried out via ../5A or ../1A current
transformers. If the current must be measured additionally to the
UMG96, with an Amperemeter, it must be connected in series to the
UMG96.
Attention!
The current transformer inputs of the UMG96 are live.
Sum current measurement
If the current measurement is carried out via two current transfor-
mers, the total transformer ratio must be set to the UMG96.
Example: Sum current transformer
A current measurement is carried out via one current transformer
with a ratio of 1000/5A and one with a ratio of 200/5A. The sum
measurement is carried out with a sum transformer 5+5/5A.
The UMG96 must be programmed as follows:
Primary current: 1000A + 200A = 1200A
Secondary current: 5A
m
As the supply voltage is taken from the measurement voltage, at least one measurement input (L-N)
must be in the rated range of voltage for operation.
- Devices with a voltage of 196 .. 275V (L-N) or 98 .. 140V (L-N) need a measurement input in the
rated voltage range.
- Devices with a measurement and supply voltage of 49 .. 76V (L-N) need two inputs at least in the
rated voltage range.
m
Verbraucher 1
Consumer 1
Verbraucher 2
Consumer 2
Einspeisung 1
Supply 1
Einspeisung 2
Supply 2
UMG 96
L l
K k
L l
K k
AK AL BK Bl
K l
k l
L l
K k
A
l
k
UMG 96
Verbraucher
Consumer
Einspeisung
Supply
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