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23
isoUG425_D00220_02_Q_DEEN / 05.2018
Wiring diagram legend
Terminal Connections
A1, A2
Connection to the supply voltage
U
s
via fuse (line protection). If sup-
plied from an IT system, both lines have to be protected by a fuse.
E, KE
Connect each terminal separately to PE.
The same wire cross section as for
"A1", "A2" is to be used.
L+, L–
Connection to the DC system to be monitored
T/R
Connection to the external combined test and reset button
11, 14
Alarm relay
"K1" terminal
11, 24
Alarm relay
"K2" terminal
A, B
RS-485 communication interface with switchable termination
resistor
* 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
s
.
Содержание ISOMETER isoUG425
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