Vertiv Liebert NXL 500kVA, Руководство по установке

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Vertiv | Liebert
®
NXL
™
500-750kVA UPS Installation Manual | 8
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, it is necessary to install circuit breakers 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
Table 13 - Liebert
® NXL™ UPS specifications
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 ).
When sizing battery cables, a maximum volt drop of 2VDC is permissible at the current ratings
given in
Table 17 .
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.
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.