Electrical
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6.0 ELECTRICAL
The unit must be installed in accordance with national wiring regulations. Refer to the unit’s serial
tag for electrical requirements. Refer to Table 3 for details.
6.1 Connecting High Voltage Wiring
The Liebert XDH requires single-phase power for normal operation. The unit ships with two power
cords, each 10 feet (3m) long with NEMA 5-15 plugs, which connect to common, three-prong outlets
(see Figure 24).
The XDH will function properly with only one power cord. The second power cord permits connection
to a separate power source to increase reliability—If one power source fails, the cord connected to the
remaining, live power source will power both banks of fans.
To attach the power cords, clip the plastic hangers attaching the cords to the Liebert XDH. Press the
appropriate end of each cord onto the electrical inlet. Attach the strain-relievers onto the power cords
and press the assemblies into the cable exit slots.
Figure 24 Liebert XDH electrical connections
!
WARNING
Risk of electric shock. Can cause death or injury.
Disconnect both electric power cords before working within the unit.
Power Cord Strain Relievers
Rear of Liebert XDH
Panel Removed for Clarity
Condensate Detection
Dry Contacts-Low Voltage
Connections
(Upper Circuit 84, 85)
Condensate Detection
Dry Contacts-Low Voltage
Connections
(Lower Circuit 82, 83)
IEC Primary
Power Inlet
IEC Secondary
Power Inlet
60Hz MODELS ONLY
Field wiring connections
at terminal strip to be NEC
Class 2. Use switch contacts
with 75VA minimum rating.
50Hz MODELS ONLY
Field wiring connections
at terminal strip for safety extra
low voltage circuits only. Use
switch contacts rated 75VA
minimum, 24VAC maximum.