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UMG 96-PA
/
UMG 96-PA
MID
21
WARNING
Risk of injury due to electric voltage!
Non-observance of the connection conditions
for voltage measurement inputs may result in
severe injuries or death.
Therefore, please observe the following:
·
Before starting work, disconnect your
system from the power supply! Verify that
there is no current!
·
Use voltage transformers to connect
voltages exceeding the permitted rated line
voltages.
·
The voltage measurement inputs on the
device are dangerous live parts!
·
Attach a disconnector as described in
section 7.2 on page 19.
·
Use a UL/IEC approved overcurrent
protection device with a rated value that
is rated for the short-circuit current at the
connection point.
NOTE
·The device only calculates measured values if
voltage L1-N is greater than 20 V
eff
(4-conductor
measurement) or voltage L1-L2 is greater than
34 V
eff
(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.
CAUTION
Improper connection will cause the device to
malfunction.
Faulty measured values will result if the device
is improperly connected.
Therefore, please observe the following:
·
Measured voltages and currents originate
from the same line.
·
The device is not suitable for measuring DC
current.
7.4.3
Voltage measurement connection versions
Fig.
Voltaie measurement Fn the
three-phase 4-conductor
system
Fig.
Voltaie measurement Fn the
sFnile-phase 3-conductor
system
Fig.
Voltaie measurement Fn the
three-phase 4-conductor
system vFa a voltaie
transformer
Fig.
Voltaie measurement Fn the
sFnile-phase 2-conductor
system
Load
Load
Load
Load
V
1
V
2
V
3
V
N
Voltage
V
1
V
2
V
3
V
N
Voltage
V
1
V
2
V
3
V
N
Voltage
V
1
V
2
V
3
V
N
Voltage
