Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201716—Rev 13
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Table 17. Separate Rectifier Input Recommended Input Circuit Breaker Ratings
UPS Model
Input Rating
Load Rating
400V
480V
Power Xpert 9395-550/275
80% Rated
500A
400A
100% Rated
400A
350A
NOTE Because of the future upgradability to a fully rated 550 kVA UPS with the addition of the FI-UPM, these breaker sizes are
specified for 550 kVA.
To reduce the risk of fire, connect only to a circuit provided with maximum input circuit breaker current ratings
from
in accordance with NEC ANSI/NFPA 70.
The line-to-line unbalanced output capability of the UPS is limited only by the full load per phase current values
for AC output to critical load shown in
or
. The recommended line-to-line load unbalance is 50%
or less.
Bypass and output overcurrent protection and bypass and output disconnect switches are to be provided by
the customer. Module Output Breakers (MOBs) are to be provided by the customer.
lists the
recommended rating for bypass, output, and MOB circuit breakers.
Table 18. Recommended Bypass, Output, and MOB Circuit Breaker Ratings
UPS Model
Input Rating
Load Rating
400V
480V
Power Xpert 9395-550/275
80% Rated
1000A
1000A
100% Rated
800A
700A
NOTE Because of the future upgradability to a fully rated 550 kVA UPS with the addition of the FI-UPM, these breaker sizes are
specified for 550 kVA.
There is no manual DC disconnect device within the UPS.
A battery disconnect switch is recommended, and may be required by NEC or local codes when batteries are
remotely located. The battery disconnect switch should be installed between the battery and the UPS.
External DC input overcurrent protection and disconnect switch for the remote battery location is to be
provided by the customer.
or
lists the maximum rating for continuous-duty rated circuit
breakers satisfying the criteria for both. Recommended breaker size is based on a maximum full load discharge
time less than 3 hours. For longer discharge times a larger breaker may be required.
Table 19. Recommended DC Input Circuit Breaker Ratings – Common Battery
UPS Model
Input Rating
400V
480V
Power Xpert 9395-550/275
1600A
1600A
NOTE Because of the future upgradability to a fully rated 550 kVA UPS with the addition of the FI-UPM, these breaker sizes are
specified for 550 kVA.
