Eaton
®
Power Xpert
®
9395P-900 Installation and Operation Manual 164000501—Rev 12
37
Table 8. 480V Input/Output Ratings and External Wiring Requirements for the Three/Four UPM Models – Common Battery
Basic Unit Rating
Units
Rating 50/60 Hz
kVA
kW
675
675
750
709
825
825
900
825
900
900
Input and Output Voltage
Volts
480/480 480/480 480/480
480/480
480/480
AC Input to UPS Rectifier (0.98 Minimum pF)
Full load current plus battery recharge current
(3) Phases, (1) Ground
A
Amps
1002
1113
1225
1225
1336
Minimum Conductor Size
Number per Phase
AWG or kcmil
(each)
500
(4)
500
(4)
500
(5)
500
(5)
500
(5)
AC Input to UPS Bypass
Full Load Current
(3) Phases, (1) Ground
B
Amps
812
902
992
1083
1083
Minimum Conductor Size
Number per Phase
AWG or kcmil
(each)
500
(3)
500
(3)
500
(4)
500
(4)
500
(4)
DC Input from Each Battery Cabinet to UPS
(1) Positive, (1) Negative
C
Total Amps
1480
1645
1809
1809
1974
Minimum Conductor Size
Number per Pole
AWG or kcmil
(each)
500
(8)
500
(8)
500
(10)
500
(10)
500
(10)
AC Output to Critical Load
Full Load Current
(3) Phases, (1) Ground
D
Amps
812
902
992
1083
1083
Minimum Conductor Size
Number per Pole
AWG or kcmil
(each)
500
(3)
500
(3)
500
(4)
500
(4)
500
(4)
NOTE: Callout letters
A
,
B
,
C
, and
D
map to
. Callout letters
A
,
C
, and
D
map to
NOTE: Bypass wiring data is not applicable to IOM configurations.
Battery Conductor Sizing
: Eaton strongly recommends using the specified DC conductor size and quantity shown above for
optimum system performance and battery run time.
Battery Cable Routing Requirements
Conduit applications:
* Each conduit must have a Positive, Negative, and Ground conductor.
* There must be an equal number of positive and negative conductors in a single conduit. Only one ground conductor is required in
each conduit.
Raceway applications:
* Positive and negative battery cables must be run side by side in the raceway in an alternating pattern (+ - + - + - + -).
* There must be a ground cable running in the raceway with the battery cables.
NOTE If a 4-pole Automatic Transfer Switch (ATS) is used to connect the UPS to a generator or alternative input source, it may
interrupt the UPS input neutral during its transition between sources. For the 9395P UPS:
The ATS transition must be open in both directions. The "break" time for the contacts must be at least 50 ms. This allows the UPS to
operate properly,
however it is important to evaluate whether the critical load will function properly as its neutral reference is rapidly
(50 ms) switched. Note also that if the UPS load is on bypass, an ATS switchover with interruption of the neutral, will interrupt the
return current path and cause a loss of all phase-to-neutral loads.
If an overlapping neutral or make-before-break ATS switch is used, the neutrals must overlap for a minimum of 50 ms during the
transition.
