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| Liebert® EXL™ 625-1100kVA Installation Manual | Rev. 3 | 02/17 13
2.0 UPS ELECTRICAL INSTALLATION
This chapter provides guidelines for qualified installers who must have knowledge of local wiring practices
pertaining to the equipment to be installed.
2.1 EXTERNAL PROTECTIVE DEVICES
For safety, circuit breakers must be installed in the input AC supply and external battery system. Given that every
installation has its own characteristics, this section provides guidelines for qualified installation personnel with
knowledge of operating practices, regulatory standards and the equipment to be installed.
External overcurrent protection must be provided. See Figures 31, 32 and 33 for overload capacity.
2.2 POWER CABLES
The UPS requires both power and control cabling. All control cables, whether shielded or not, should be run
separately from the power cables in metal conduits or metal ducts that are electrically bonded to the metalwork
of the cabinets to which they are connected.
The cable design must comply with the voltages and currents in Tables 14 through 17, follow local wiring
practices and take into consideration the environmental conditions (temperature and physical support media),
room temperature and conditions of installation of the cable and system’s overload capacity (see 5.0 -
Specifications).
WARNING
Risk of electrical shock. Can cause injury or death.
The UPS contains high DC as well as AC voltages. Check for voltage with both AC and DC voltmeters
before working within the UPS.
Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and
glasses should be involved in installing the UPS or preparing the UPS for installation.
AVERTISSEMENT
Risque de décharge électrique pouvant causer des blessures graves, voire mortelles.
Le système ASC contient des tensions c.c. et c.a. élevées. Vérifiez les tensions au moyen de voltmètres
c.a. et c.c. avant d’utiliser le système ASC.
Seuls des employés qualifiés et dûment formés portant un casque, des gants, des chaussures et des
lunettes de sécurité adéquats doivent se charger d’installer le système ASC ou de le préparer pour
l’installation.
WARNING
Risk of electrical shock. Can cause injury or death.
Before cabling the UPS, ensure that you are aware of the location and operation of the external isolators
that connect the UPS input/bypass supply to the power distribution panel.
Check that these supplies are electrically isolated, and post any necessary warning signs to prevent their
inadvertent operation.
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