Emerson 480V ユーザーズマニュアル

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. 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 

Emerson Network Power Liebert 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.

Do not apply electrical power to the UPS equipment before the arrival of the commissioning 

engineer.

The UPS equipment should be installed by a qualified engineer in accordance with the 

information contained in this section.

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.