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UMG 96-PA / UMG 96-PA-MID / UMG 96-PA-MID+
NOTE
·The device only determines measured values
if a voltage L1-N of greater than 20 V
eff
(4-con-
ductor measurement) or a voltage L1-L2 of
greater than 34 V
eff
(3-conductor measurement)
is applied to voltage measurement input V1.
·Use a line protection (1-10 A) with IEC/UL
approval as an overcurrent protective device for
voltage measurement.
7.4.3
Connection variants for voltage mea-
surement
V
1
V
2
V
3
V
N
Fig.:
Voltage measurement in
three-phase 4-conductor
system
V
1
V
2
V
3
V
N
Fig.:
Voltage measurement in
a single-phase 3-con-
ductor system
V
1
V
2
V
3
V
N
Fig.:
Voltage measurement in
a three-phase 4-conduc-
tor system via voltage
transformer
V
1
V
2
V
3
V
N
Fig.:
Voltage measurement in a
single-phase 2-conductor
system
Load
Load
Load
Load
NOTE
The device only allows the setting of
one voltage
transformer ratio
for
all phases!
Voltage transformer ratios
can be configured
conveniently via
·the device menu.
·the GridVis
®
software.
For information on voltage transformer configura-
tion, see the chapter „12.4.3 Current and voltage
For information on overrange, see the chapter
Connection variant “Voltage measurement with
functional earthing (FE)”
For a measurement in a grounded 3-phase sys-
tem without N, connect the PE as a functional
earth (FE) to the voltage measurement input V
N
of
the device. Make sure to use the color "pink" (DIN
EN 60445/VDE 0197) for the functional earth con-
ductor and to observe the limits for the voltage
measurement.
DC
AC/DC
L2
L3
L1
Auxiliary supply
Voltage measurement
4M
4M
4M
4M
V1
V3
V2
V
N
UMG 96-PA
N
L1
240 V
50/60Hz
Ground-
ing of the
system
Functional
earth (FE)
Fig.
Connection variant -
Voltage measurement in a grounded 3-phase system.
Do not use the protective earthing present in
your system as functional a earthing!
