Emerson 115-120 Manuel D’Utilisation

This section describes the Liebert

®

 APM

™

’s environmental requirements and mechanical 

considerations that must be taken into account when planning the positioning and cabling of the UPS 

equipment.
Because each 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.

Risk of improper installation. Can cause equipment damage.
Do not apply electrical power to the UPS equipment before the commissioning engineer 

arrives at the installation site.
The UPS must be installed by a properly trained and qualified engineer in accordance with 

the information contained in this chapter. All the equipment not referred to in this manual is 

shipped with details of its own mechanical and electrical installation information.

Risk of electric shock. Can cause injury, property damage and death.
Special care should be taken when working with the batteries associated with this equipment. 

When connected together, the nominal battery voltage is 288VDC and is potentially lethal.
• Eye protection should be worn to prevent injury from accidental electrical arcs.
• Remove rings, watches and all metal objects.
• Only use 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
Three-phase, four-wire input power is required.

NOTE
Input power must be supplied to the Liebert APM from a properly grounded Wye or Delta