Installation and connection
25
IRDH275BM-7_D00123_06_M_XXEN/07.2018
4.2 Wiring diagram
Connect the terminals A1/+ and A2/- to the supply voltage U
s
in accordance
with IEC 60364-4-43. The connections to the supply voltage shall be provided
with protective devices to afford protection in the event of a short circuit
(a 6 A fuse is recommended).
For UL and CSA applications, the use of 5 A fuses is mandatory.
Only one ISOMETER® may be connected to an external TEST or RESET button.
The TEST and RESET button for collective testing of several insulation monitor-
ing devices must not be connected in parallel.
External coupling device connected via the terminal AK cannot be switched
off via the internal coupling relays.
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