Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201716—Rev 13
23
When selecting the most appropriate grounding scheme for your application, consider items such as:
–
Ground fault detector settings
–
Site specific specifications and requirements
–
Local codes and regulations
•
The UPS cabinet is shipped with a debris shield covering the ventilation grill on top of the unit. Do not
remove the debris shield until installation is complete. However, remove the shield before operating the
UPS. Once the debris shield is removed, do not place objects on the ventilation grill.
•
In a common battery system, single and multiple UPMs are powered from one common battery source. In
a separate battery system, multiple UPMs are each powered from separate battery sources.
•
UPSs in distributed bypass and parallel systems must use a separate battery system.
•
On a UPS configured for separate rectifier inputs, all sources that feed the separate rectifier inputs must
be derived from a common ground point.
•
A Field Installed UPM (FI-UPM) is always designated as UPM 4.
•
The 9395-550/275 is upgradable to a fully rated 550 kVA with the addition of the FI-UPM. Because of this
future upgradability, the UPS wire and external overcurrent protection ratings listed in the following tables
are specified for 550 kVA.
If the power rating listed on the nameplate of the installed UPS is not found in the following tables, wire the
UPS using the fully rated specifications. Otherwise, calculate the required wire, conduit, and breaker sizes
using the following guidelines in addition to those already listed in paragraph
UPS System Power Wiring Preparation
•
Select wire size according to the UPS nameplate.
•
Do not use wire larger than the largest size listed in
through
•
Use terminal recommendations from
through
.
•
Size and number of conduits must not exceed those listed in
.
•
Select overcurrent protection input, battery, and output breakers according to the UPS nameplate rated for
either 80% or 100%.
•
Follow all applicable NEC and local codes.
For external wiring requirements, including the minimum AWG size of external wiring, see
or
for common battery system installations,
or
for separate battery system installations, or
for separate rectifier feed installations. Wire sizes listed are for copper wiring only.
•
The 450, 500, and 550 kVA ratings in
through
are available only if the FI-UPM is installed.
•
Because of the future upgradability to a fully rated 550 kVA UPS with the addition of the FI-UPM, the UPS
wiring is specified for 550 kVA in
through
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