UPS INSTALLATION PLAN AND UNPACKING
Eaton 9395 UPS (450–825 kVA) Installation and Operation Manual
S
164201725 Rev 4
www.eaton.com/powerquality
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To reduce the risk of fire, connect only to a circuit provided with maximum input circuit breaker current
ratings from Table 3‐16 in accordance with the 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 Table 3‐4 on
page 3-14, Table 3‐5 on page 3-15, Table 3‐6 on page 3-16, or Table 3‐7 on page 3-17.
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 supplied by the customer. Module Output Breakers (MOBs) are to be
supplied by the customer. Table 3‐18 lists the recommended rating for bypass,
output, and MOB circuit breakers. Bypass breakers are not applicable for IOM
configurations.
Table 3‐18. Recommended Bypass, Output, and MOB Circuit Breaker Ratings
UPS Model
Bypass, Output, and MOB Rating
Load Rating
400V
480V
Eaton 9395-825/650
80% Rated
1200A
1000A
100% Rated
1000A
800A
Eaton 9395-825/750
80% Rated
1600A
1200A
100% Rated
1200A
1000A
Eaton 9395-825/825
80% Rated
1600A
1600A
100% Rated
1200A
1000A
Eaton 9395-825/450
Eaton 9395-825/500
Eaton 9395-825/550
See Note 1
80% Rated
1600A
1600A
100% Rated
1200A
1000A
NOTE 1
Because of the future upgradability to a fully rated 825 kVA UPS with the addition of the
FI-UPM, these breaker sizes are specified for an 825 kVA UPS.
NOTE 2
Bypass breakers are not required for IOM configurations.
There is no manual DC disconnect device within the UPS.
A battery disconnect switch is required for battery systems and may also be required
by NEC or local codes. The battery disconnect switch should be installed between the
battery and the UPS.
External DC input overcurrent protection and disconnect switch is to be supplied by
the customer. Table 3‐19 and Table 3‐20 list the maximum ratings for continuous‐duty
rated circuit breakers satisfying the criteria for both. Recommended disconnect size is
based on a maximum full load discharge time less than 3 hours. For longer discharge
times a larger disconnect may be required.
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