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isoLR275_D00127_00_M_XXEN/07.2018
4. Installation and connection
4.1
Mounting of the isoLR275
For UL applications:
High Voltage Coupler AGH-PV should be mounted min. 30.8 mm away from
the walls of a metal enclosure and uninsulated grounded parts and uninsula-
ted live parts.
4.2
Wiring diagram
The terminals A1/+ and A2/- are to be connected to the supply voltage
U
s
according to IEC 60364-4-43, that means, the connections are to be protected
against short-circuit by means of a protective device (a 6 A fuse is recommen-
ded).
For UL and CSA applications, the use of 5 A fuses is mandatory.
Devices for protection against short-circuit in conformity with IEC 60364-4-43
for the coupling of terminals L1/L2 of the AGH-LR the IT system being monito-
red 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 (a short-circuit-proof and earth-fault-
proof wiring is recommended).
Install the isoLR275 and the AGH-LR with a distance of at least
30 mm to all adjacent devices to ensure compliance with
prescribed temperature limits.
The cable lengths between AGH-LR and isoLR275 must not
exceed 0.5 m.
