18
UMG 511
Voltage measurement inputs
The UMG511 has 4 voltage measurement inputs
(V1, V2, V3, V4)
Excess voltage
The voltage measurement inputs are suitable for
measurement in networks in which overvoltages
of the overvoltage category 600V CATIII occur.
Fig. connection example for voltage measure-
ment
10A
(UL/IEC listed)
L1 N PEL3L2
For measurement with the auxiliary
measurement (V4), a voltage must be
connected to the baseline measure-
ment for frequency determination.
m
In case of a three wire main measu-
rement (input V1-V3), the auxiliary
measurement (input V4) cannot be
used as measuring input.
m
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