20
UMG 512
Voltage measurement inputs
The UMG 512 has four voltage measurement inputs (V1,
V2, V3, V4).
Voltage swell
The voltage measurement inputs are suitable for
measurements in networks where overvoltages
of overvoltage category 600V CATIII can occur.
For measurement with the supporting
measurement (V4), a voltage must be
connected to the baseline measurement
for frequency determination.
m
If the baseline measurement (inputs
V1-V3) is connected to a three-phase
3-conductor network, the supporting
measurement (input V4) can no longer be
used as a measurement input.
m
L1
N PE
L3
L2
Fig. Example connection for measuring voltage.
Содержание UMG 512
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