Eaton Power Xpert 9395C, Installation And Operation Manual

Page: 39 / 175

22 Eaton Power Xpert 9395C UPS Installation and Operation Manual 164000821—Rev 06
Table 5. 480V Input/Output Ratings and External Wiring Requirements
Basic Unit Rating
Units
Rating 50/60 Hz
kVA
kW
1000
1000 1100
1100 1100
1100
Input and Output Voltage
Volts
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 1485 1485 1600
Minimum Conductor Size
Number per Phase kcmil
(each)
500
(5)
500
(5)
500
(6)
AC Input to UPS Bypass
Full Load Current
(3) Phases, (1) Ground
B Amps 1203 1323 1323
Minimum Conductor Size
Number per Phase AWG or kcmil
(each)
500
(5)
500
(5)
500
(5)
DC Input from Battery Disconnect to UPS
(1) Positive, (1) Negative
C Total Amps 2193 2193 2412
Minimum Conductor Size
Number per Pole kcmil
(each)
500
(10) 500
(10) 500
(12)
AC Output to Critical Load
Full Load Current
(3) Phases, (1) Ground
D Amps 1203 1323 1323
Minimum Conductor Size
Number per Phase kcmil
(each)
500
(5)
500
(5)
500
(5)
NOTE Callout letters A , B , C , and D map to Figure 57 .
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 9395 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.
UPS Installation Plan and Unpacking