janitza UMG 512-Pro, User Manual And Technical Data

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UMG 512-PRO
Voltage dip
A voltage dip is set in % of the nominal voltage
U
LN
.
Overvoltage
The overvoltage is set in % of the nominal voltage
U
LN
.
Overcurrent
The rapid increase of the current is set in % of the
nominal current.
Apply AUX / Main
These settings can be set separately for the main
and auxiliary measurement.
The menu item "Apply AUX / Main" allows you to
apply the settings from the auxiliary or main mea-
surement respectively, so that you do not have to
enter everything again.
11.3.4 Relevant voltage
Depending on the use case, the following are
required for the analysis of the power quality
·The voltage between the phase conductors (L),
thus L-L
·Or the voltage between phase conductor (L) and
neutral conductor (N), L-N
The menu item "Relevant voltage" allows you to
choose between these two settings.
The "L-N'' setting is recommended for measuring
the power quality in low-voltage networks. The
setting "L-L'' should be used in medium voltage
networks.
11.3.5 Nominal frequency
The device determines the mains frequency from
the applied voltage L1 and uses this for the further
calculations.
The nominal frequency of the network must be
set manually on the device before measurement
starts. The nominal frequency is required as a
reference for measuring the power quality.
Setting range for the nominal frequency:
·50 Hz (factory default setting)
·60 Hz
·15 Hz .. 440 Hz (automatic)
·For measuring the power quality according to
EN61000 4 30 and EN50160, select the nominal
frequency of 50 Hz or 60 Hz.
·For measurements in networks with other nomi-
nal frequencies, e.g. 16 2/3 Hz or 400 Hz, set the
nominal frequency to "automatic".
Fig. Setting the relevant voltage
INFORMATION
Automatic determination of the mains frequen-
cy requires that a voltage L1-N of greater than
10 Vrms be present at voltage measurement
input V1.
INFORMATION
The flicker values can only be determined for
the "Relevant voltage" L-N.
Fig. Setting the nominal frequency