Vertiv | Liebert
®
NXL
™
500-750kVA UPS Installation Manual |
3
1.0
MECHANICAL INSTALLATION
1.1
Introduction
This section describes the requirements that must be taken into account when planning the
positioning and cabling of the Liebert
®
NXL
™
uninterruptible power supply and related equipment.
This chapter is a guide to general procedures and practices that should be observed by the
installing personnel. The particular conditions of each site will determine the applicability of such
procedures.
NOTICE
Three-phase input supply required.
The standard Liebert
®
NXL
™
UPS is suitable for connection to three-phase, four-wire (+ Earth) TN-C, TN-
S, IT-G or IT-IG, or three-phase, three-wire plus ground IT-UG.
If the unit is used with an IT power system, a 4-pole disconnect device must be included as part of
building installation.
NOTICE
Do not apply electrical power to the UPS equipment before the arrival of the commissioning engineer.
1.2
Preliminary Checks
Before installing the UPS, please carry out the following preliminary checks:
•
Visually examine the UPS equipment for transit damage, both internally and externally. Report any
damage to the shipper immediately.
•
Verify that the correct equipment is being installed. The equipment supplied has an identification tag on
the interior doors reporting the type, size and main calibration parameters of the UPS.
•
Verify that the UPS room satisfies the environmental conditions stipulated in the equipment
specification, paying particular attention to the ambient temperature and air exchange system.
WARNING
Risk of electrical shock. Can cause injury or death.
Special care must be taken when working with the batteries associated with this
equipment. When they are connected together, the battery terminal voltage will exceed
400VDC and is potentially lethal.
NOTE
All equipment not referred to in this manual is shipped with details of its own mechanical and
electrical installation.
