Eaton Power Xpert 9395P-1100/1100 Installation And Operation Manual page 48

UPS Installation Plan and Unpacking
Table 8. 480V Input/Output Ratings and External Wiring Requirements for the Three UPM – Common Battery
Basic Unit Rating
Input and Output Voltage
AC Input to UPS Rectifier (0.98 Minimum pF)
Full load current plus battery recharge current
(3) Phases, (1) Ground
Minimum Conductor Size
Number per Phase
AC Input to UPS Bypass
Full Load Current
(3) Phases, (1) Ground
Minimum Conductor Size
Number per Phase
DC Input from Battery Disconnect to UPS
(3) Phases, (1) Negative
Minimum Conductor Size
Number per Pole
AC Output to Critical Load
Full Load Current
(3) Phases, (1) Ground
Minimum Conductor Size
Number per Phase
NOTE Callout letters A, B, C, and D map to
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.
30 Eaton ®
Figure
Power Xpert ® 9395P-1200 Installation and Operation Manual 164000500—Rev 11
Units
kVA 675
675
kW
480/480 480/480 480/480 480/480
Volts
Amps
1002
A
AWG or kcmil
500
(each)
(6)
Amps
812
B
AWG or kcmil 500
(each) (5)
Total Amps
1480
C
AWG or kcmil 500
(each) (12)
Total Amps
812
D
AWG or kcmil 500
(each) (5)
68..
Rating 50/60 Hz
750 825 900
750 825 825
480/480
1113 1225 1225
500 500 500
(6) (6) (6)
902 992 1083
500 500 500
(5) (5) (5)
1645 1809 1809
500 500 500
(12) (12) (12)
902 992 1083
500 500 500
(5) (5) (5)
900
900
1336
500
(6)
1083
500
(5)
1974
500
(12)
1083
500
(5)