Eaton Power Xpert 9395 - Mechanically Joining the Sections

34 Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201725—Rev 15
Table 8. Input/Output Ratings and External Wiring Requirements for the Three UPM Power Xpert 9395-825/650, 9395-825/
750, and 9395-825/ 825 – Separate Battery (Continued)
Basic Unit Rating
Units
Rating 50/60 Hz
kVA
kW
450
410
450
410
500
455
500
455
550
501
550
501
Input and Output Voltage Volts 400/400 480/480 400/400 480/480 400/400 480/480
DC Input from Each Battery Disconnect to
Each UPS UPM
(1) Positive, (1) Negative
C
Total Amps
551 551 551 551 551 551
Minimum Conductor Size
Number per Pole
AWG or kcmil
(each)
250
(3)
AC Output to Critical Load (Four Wire)
Full Load Current
(3) Phases, (1) Ground
D
Amps
650 541 722 601 794 662
Minimum Conductor Size
Number per Pole
AWG or kcmil
(each)
500
(4)
AC Output to Critical Load (Five Wire)
Full Load Current
(3) Phases, (1) Neutral, (1) Ground
D
Amps
650 541 722 601 794 662
Minimum Conductor Size
Number per Pole
AWG or kcmil
(each)
500
(5)
NOTE: Callout letters A, C, and D map to Figure 80. Callout letters B, C, and D map to Figure 89.
NOTE: Because of the future upgradability to a fully rated 825 kVA UPS with the addition of the FI-UPM, the UPS wiring is specified
for 825 kVA.
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.
AC input to the UPS with separate rectifier inputs is wired as if each UPM is rated for 275 kVA (see Table 9).
The bypass input, battery input, and output are wired the same as for a separate battery UPS (see Table 6 or
Table 8).
UPS Installation Plan and Unpacking