Installation, connection and commissioning
27
isoRW425_D00052_03_M_XXEN / 02.2017
4.2 Connection
Connect the 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 recommended).
Devices for protection against short-circuit in conformity with IEC 60364-4-43
for the coupling of terminals L1/L2 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.
Only one ISOMETER® may be controlled via a test/reset button. It is not al-
lowed to use a parallel connection of several test or reset inputs for combined
testing of ISOMETER®s.
For UL application:
Only use 60/70°C copper lines!
For UL and CSA applications, it is mandatory to use 5 A fuses for the protection
of the supply voltage.
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