janitza UMG 103-CBM, User Manual And Technical Data

Page: 25 / 62

www.janitza.com UMG 103-CBM
25
6. Grid systems
Application areas for the meter in:
·TN and TT networks
·Residential and industrial areas
WARNING
Risk of injury due to electrical voltage!
Rated surge voltages above the permitted over-
voltage category can damage the insulation in the
device. This impairs the safety of the device. This
can result in serious injury or death.
· Only use the device in environments which
comply with the permissible rated surge
voltage.
· Observe the limit values specified in the user
manual and on the rating plate.
Suitable grid systems and maximum rated voltag-
es according to DIN EN 61010-1/A1:
Three-phase 4-conductor systems
with grounded neutral conductor
L1
L2
L3
E
E
N
E
L1
L2
L3
E
N
R
L1
L2
L3
E
E
L1
L2
E
E
L
N
E
E
L1
L2
L3
E
E
L1
L2
N
E E
U
L-N
/ U
L-L
277 VLN / 480 VLL
Three-phase 4-conductor systems
with non-grounded neutral conductor (IT networks)
L1
L2
L3
E
E
N
E
L1
L2
L3
E
N
R
L1
L2
L3
E
E
L1
L2
E
E
L
N
E
E
L1
L2
L3
E
E
L1
L2
N
E E
In this network system, connect the device
only via voltage transformers !