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Connection
Connection
isoNAV685-D-B_D00264_03_M_XXEN/06.2017
18
6.2 Connection to a 3(N)AC system/system type 3AC
Position the terminal cover and click it into place
Risk of injury, fire and damage to property due to a short cir-
cuit!
According to DIN VDE 0100-430, devices used to protect against a
short circuit when terminals L1/+, L2 und L3/- are coupled to the IT
system to be monitored can be omitted if the wiring is carried out
in such a manner as to reduce the risk of a short-circuit to a mini-
mum. Ensure short-circuit proof and earth-fault proof wiring.
The ISOMETER® may only be used for monitoring de-energized sys-
tems. The device must be deactivated via the digital input before
the mains voltage is switched on.
WARNING
L1
L2
L3
N
PE
U
S
6A
U
n
6.3 Connect to a frequency converter to monitor in the off state
(Offline)
The ISOMETER® may only be used for monitoring de-energized sys-
tems. The device must be deactivated via the digital input before
the mains voltage is switched on.
PE
M
DC+
DC-
AC
KE E
IT
System
O K
2 3 0
kΩ
R(an) 40kΩ/10kΩ
O K
2 3 0
kΩ
L1/+
L2
L3/-
L1/+
L2
L3/-
KE E
3
=
3
=