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1.0 INSTALLATION
Liebert’s NX Uninterruptible Power Supply system provides continuous, high-quality AC power to
your business-critical equipment, such as telecommunications and data processing equipment. The
Liebert NX UPS supplies power that is free of the disturbances and variations in voltage and fre-
quency common to utility power, which is subject to brownouts, blackouts, surges and sags.
The Liebert NX utilizes the latest in high-frequency, double-conversion pulse width modulation tech-
nology and fully digital controls to enhance its reliability and increase the ease of use. This section
describes the Liebert NX’s environmental requirements and mechanical considerations that must be
taken into account when planning the positioning and cabling of the UPS equipment.
Because every site is unique, this section presents a guide to general procedures and practices that
should be observed by the installing engineer, rather than step-by-step installation instructions.
1.1 External Inspections
1. While the UPS system is still on the truck, inspect the equipment and shipping container(s) for
any signs of damage or mishandling. Do not attempt to install the system if damage is apparent.
If any damage is noted, file a damage claim with the shipping agency within 24 hours and contact
Liebert Global Services at 1-800-LIEBERT to inform them of the damage claim and the condition
of the equipment.
2. Compare the contents of the shipment with the bill of lading. Report any missing items to the
carrier and your local Liebert representative immediately.
!
WARNING
Do not apply electrical power to the UPS equipment before the arrival of the commissioning
engineer.
!
WARNING
The UPS equipment should be installed by a qualified engineer in accordance with the
information contained in this section.
!
WARNING
Special care should be taken when working with the batteries associated with this equipment.
When connected together, the nominal battery voltage is 480VDC and is potentially lethal.
• Eye protection should be worn to prevent injury from accidental electrical arcs.
• Remove rings, watches and all other metal objects.
• Use only tools with insulated handles.
• Wear rubber gloves.
If a battery leaks electrolyte or is otherwise physically damaged, it must be replaced, stored in
a container resistant to sulfuric acid and disposed of in accordance with local regulations.
If electrolyte comes into contact with skin, the affected area should be washed immediately
with large amounts of water.
NOTE
The Liebert NX UPS can be used in TN utility system.