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21
isoHV425_D00082_02_Q_DEEN /05.2018
Wiring diagram legend
Terminal
Connections
A1, A2
Connection to the supply voltage
U
s
via fuse (line protection):
If supplied 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.
L1/+, L2/–
Connection to IT system to be monitored
Up, AK1,
GND, AK2
Connection of AGH422 terminals to the corresponding
ISOMETER® terminals
T/R
Connection to the external combined Test/Reset button
11, 14
Alarm relay
"K1" terminal
11, 24
Alarm relay
"K2" terminal
A, B
RS-485 communication interface with switchable termination resis-
tor
Содержание ISOMETER isoHV425
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