janitza UMG 806, User Manual And Technical Data

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UMG 806 www.janitza.com
Use the meter for voltage measurement in TN, TT
and IT networks with the approved overvoltage
category.
WARNING
Risk of injury due to electrical voltage!
Do not short-circuit secondary connections of volt-
age transformers! This can result in serious injury or
death.
· Connect voltage transformers according to
their documentation!
· Check your installation!
7. Installation
7.1 Nominal voltages
7.1.1 Three-phase 4-conductor network
The device can be used in three-phase 4-conduc-
tor systems (TN, TT network) (50 Hz, 60 Hz) with
grounded neutral conductor. The components of
the electrical system are grounded.
Suitable mains and nominal voltages for your
meter:
U
L-N
/ U
L-L
66 V / 115 V
120 V / 208 V
127 V / 220 V
220 V / 380 V
230 V / 400 V
Tab.: Nominal network voltages suitable for measuring inputs
acc. to EN 60664-1:2003
UMG 806
Ground-
ing of the
system
DC
AC/DC
PE
230/400V 50/60Hz
L2
L3
N
L1
Auxiliary supply
Voltage measurement
L1
L3 L2 N
N
L1
230V
50/60Hz
Fig. Schematic diagram, UMG 806 in a TN network
WARNING
Disregard of the connection conditions of the
transformers to Janitza measurement devic-
es or their components can lead to injuries or
even death or to material damage!
·Do not use Janitza measurement devices or
components for critical switching, control or
protection applications (protective relays)! It
is not permitted to use measured values or
measurement device outputs for critical appli-
cations!
·For Janitza measurement devices and their
components use
only“Transformers for mea-
surement purposes”
which are suitable for the
energy monitoring of your system. Do
not use
“Transformers for protection purposes”
!
·Observe the information, regulations and limit
values in the use information on
“Transformers
for measuring purposes”
, specifically during
testing and commissioning of the Janitza mea-
surement device, the Janitza component and
your system.