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UMG 96-S2
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24
Consumer
L2
L3
N
L1
S1
S2
S1
S2
S1
S2
NOTE
The device only determines the measured
values if voltage L1-N is greater than 20 Veff
(4-conductor measurement) or voltage L1-L2 is
greater than 34 Veff (3-conductor measurement)
at voltage measurement input V1.
Use a line protection (1 - 10 A) with IEC/UL
approval as fuse protection for the voltage
measurement.
7.4.3 Voltage measurement connection
versions
Three-phase 4-conductor systems
Voltage measurement in the three-phase 4-conductor
systems
Single phase 3-conductor system
Voltage measurement in the single-phase
3-conductor system
NOTE
·The device only permits setting
one voltage
transformer ratio
for
all phases
!
·You can easily configure the
voltage
transformer ratios
via
- the device menu.
- the GridVis
®
software.
·For information on programming the voltage
transformer, see chap. 12.6 on page 37.
·For information on exceeding the measurement
range, see chap. 17.4 on page 56.
V
1
V
2
V
3
V
N
V
1
V
2
V
3
V
N
WARNING
Risk of injury due to high currents and high
electrical voltages!
Serious personal injuries or death can occur
due to:
·Touching live exposed or stripped cores.
·Device and current transformer inputs that are
dangerous to touch.
Therefore, please observe the following for your
system:
·
Before starting work, disconnect it from the
power supply!
·
Secure it against being switched back on!
·
Determine that there is no current!
·
Ground the system! Use the ground
connection point with the ground symbol
for this.
·
Cover or block off neighboring parts that
are under voltage!
Fig.
“Current measurement via current transformer” connection
7.5 Current measurement
The device
·is only approved for a current measurement
using the current transformer.
·is designed for the connection of current
transformers with secondary currents of ../1 A
and ../5 A.
·has the current transformer ratio set to 5/5 A by
default (adjust to the current transformer used,
if necessary).
·does not measure DC currents.
Voltage
Voltage
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