
43
UMG 605US
L
N
At least one phase (L) and the neutral conduc-
tor (N) must be connected to the voltage mea-
surement input for the measurement.
Applying the measuring-circuit
voltage
The UMG605US is suitable for the
measurement of voltages of up to 300 V AC to
earth and 520 V AC conductor to conductor.
The UMG605US is not suitable for the
measurement of direct voltages. Voltages
above 300 VAC to earth must be connected
via voltage transformers.
After connecting the measurement-current
voltages, the measured values displayed by
the UMG605US for the L-N and L-L voltages
must correspond to those at the voltage
measurement input.
If a voltage transformer factor is programmed,
this must be taken into account in the
comparison.
Minimum voltage
For automatic ascertainment (wide range)
of the frequency, an L1-N voltage larger
than 10Veff must be applied to the voltage
measurement input V1. If an adequately high
measuring-circuit voltage is not applied the
UMG605US cannot determine the system
frequency and can therefore also not take a
measurement.
Содержание UMG 605US
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