janitza UMG 801, User Manual

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UMG 801 www.janitza.de
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7. Installation
Use the meter for voltage measurement in TN, TT
and IT networks with the approved overvoltage
category of 1000 V CAT III according to IEC and
600 V CAT III according to UL (rated surge voltage
8 kV).
WARNING
Risk of injury due to electrical voltage!
Do not short-circuit secondary connections of
voltage transformers! This can result in serious
injury or death.
·
Connect voltage transformers according to
their documentation!
·
Check your installation!
7.1 Nominal voltages
7.1.1 Three-phase 4-conductor network with
grounded neutral conductor
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
240 V / 415 V
260 V / 440 V
277 V / 480 V
347 V / 600 V
Maximum nominal voltage of the
network according to UL
400 V / 690 V
417 V / 720 V
480 V / 830 V
Maximum nominal voltage of the
network according to IEC
Tab: Nominal netework voltages suitable for measuring inputs
acc. to EN 60664-1:2003
PE
230V/400V 50/60Hz
L2
L3
N
L1
Supply voltage
Voltage measurement
4M 4M 4M 4M
V1 V3 V2 VN
UMG 801
Grounding of
the system
230 VAC
24..48 V
DC
+
_
PELV
(grounded
low voltage)
V
7.2 Disconnect switch
When installing in a building, provide a suitable
disconnect switch for the supply voltage in order
to disconnect your system and thus your device
from the supply of power.
·Install the disconnect switch of your system or
device in such a way that it is easily accessible
by the user.
·Mark the switch as an isolation device for your
system or device.
L
N
INFORMATION
Further details on the technical data can be found
in the chapter „19. Technical data“ on page 96.