Bender ISOMETER isoUG425 Kurzanleitung Seite 22

Connection
The supply voltage U
voltage L+ and L- only when the supply voltage is ≥ 24 V DC. Otherwise a se-
parate power supply is required. Connect terminals A1 and A2 to the supply
voltage according to IEC 60364-4-43, i.e. the connections are to be protected
against short circuit by means of a protective device (a 6 A fuse is recommen-
ded). Devices for protection against short-circuit in conformity with IEC 0100-
430 for the coupling of terminals L+/L- 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 minimum.
L+ L
Test/Reset
CAUTION
22
applied to A1 and A2 can be provided by the system
S
E KE
E
L+
<
ISOMETER
T
T/R
K1
T/R
14
Only one ISOMETER® may be controlled via an external Test/
Reset button. A galvanic parallel connection of several test or
reset inputs for testing multiple insulation monitoring
devices is not allowed.
The supply voltage U
U
S
to A1/A2 can be provided by the
system voltage (L +/L-) when the
system voltage is ≥ 24V DC. Otherwise
a separate power supply is needed.
A1 A2
KE A1 A2
L-
k
AL1 AL2
ON
isoUG425
k
R MENU
14 24 11
R
on
B
A
off
R
K2
A
24 11
isoUG425_D00220_02_Q_DEEN / 05.2018
L+
L-
PE
applied
s
COM460IP
B
RS-485