Bender ISOMETER isoES425 Kurzanleitung Seite 25

Wiring diagram legend
Terminal
Connection to the supply voltage U
A1, A2
If supplied from an IT system, both lines have to be protected by a
fuse.*
Connect each terminal separately to PE.
E, KE
The same wire cross section as for " A1 " , " A2 " is to be used.
L1/+, L2/– Connection to the AC or DC system to be monitored
T/R Connection to the external combined test and reset button
Alarm relay " K1 " terminal
11, 14
11, 24 Alarm relay " K2 " terminal
RS-485 communication interface with switchable termination
A, B
resistor
isoES425_D00214_00_Q_DEEN/08.2017
* For UL applications:
Only use 60/75°C copper lines! For UL and CSA applications,
it is mandatory to use fuses rated over 5 A to protect the
supply voltage U
Connections
via fuse (line protection):
s
.
s
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