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UMG 96-PA / UMG 96-PA-MID / UMG 96-PA-MID+
13.7 Overrange
If the measuring range is exceeded, a warning
appears in the device display, e.g. for the voltage,
the warning “
Overvoltage
" with an indication of
the voltage circuit.
The overrange message is displayed as long as
the condition is present. Alarms can be acknowl-
edged with button 5
Alarms
. The measuring range
is exceeded if at least one of the voltage or cur-
rent measurement inputs lies outside its specified
measuring range.
Limit values for overrange (200 ms effective val-
ues):
I
=
6 A
rms
U
L-N
=
600 V
rms
The phasor diagram can be used to check incor-
rect connections at the voltage and current inputs.
Example 1
Primarily ohmic load.
Voltage
and
current
have
only a small deviation
in the phase position.
·The current measurement input is assigned to
the correct voltage measurement input
Example 2
Primarily ohmic load.
Voltage
and
current
have
a deviation of about 180°
in the phase position.
·The measured current input is assigned to the
correct voltage measurement input.
·In the current measurement under consideration,
the connections k and I are reversed or there is a
feedback into the supply network.
WARNING
Material damage due to disregard of the con-
nection instructions!
Voltages and currents outside the permissible
measuring range can destroy the device.
Comply with the measuring range specifica-
tions from the technical data.
Fig.
Example warning message, overvoltage in
phase L1.
NOTE
If the measuring range is exceeded, please check
your installation and connections. Comply with the
connection conditions specified in the technical
data.
