43
UMG 104
Putting into Service
Applying the power supply voltage
The power supply voltage level for the UMG104
is given on the rating plate. Supply voltages
which do not correspond to those given on
the rating plate can result in malfunctions and
destruction of the device.
After applying the power supply voltage the
text “Start up” appears in the display. Around
2-6 seconds later the UMG104 switches to the
first measured value display.
If no display appears, check whether the
power supply voltage is within the rated
voltage range.
Frequency measurement
For the frequency measurement, the measured
voltage must be greater than 10 V in the
voltage measuring path L1-N.
Only detected frequencies within the range
45 Hz to 65 Hz are used for measurement at
the current and voltage measurement inputs.
Power supply voltage
(see rating plate)
Prior to commissioning potential pro-
duction dependant contents of the
energy counter, min/max values and
records have to be deleted.
C
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