18
UPS 225 - 275 kVA/300kVAPF0.8
1027212
User’s and Installation Guide
Revision E
Table 3-6: Recommended installation parts (not supplied by Eaton Corporation)
External overcurrent protection is not provided by this product, but is required by codes. Refer to
Table 3-4 for wiring requirements. If an output lockable disconnect is required, it is to be supplied by
the user.
Table 3-7: Recommended input circuit breaker ratings
CAUTION
To reduce the risk of fire, connect only to a circuit provided with maximum input circuit breaker
current ratings from Table 3-7 in accordance with the national and local installation rules.
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 16. The recommended line-to-line load
unbalance is 50% or less.
Source protection for the AC input to bypass should be treated as if supplying a 275 (300) kVA three-
phase transformer, to allow for inrush current. Bypass input wiring and bypass input breaker rating
should be treated as if supplying a 275 (300) kVA load, regardless of the rating of the UPS.
Bypass and output overcurrent protection and bypass and output disconnect switches are to be
provided by the user. Table 3-8 lists the recommended rating for bypass and output circuit breakers
satisfying the criteria for both. Bypass breakers are not required for IOM configurations.
Table 3-8: Recommended bypass and output circuit breaker ratings
Part
Size
Quantity
Manufacturer
Part
number
Notes
Bolt
M12 x 50 mm
As required
N/A
N/A
Quantity per lug
hole
Bolt
M10 x 50 mm
As required
N/A
N/A
Flat washer
M12
As required
N/A
N/A
Lock washer
M12
As required
N/A
N/A
Nut
M12
As required
N/A
N/A
UPS model
Input rating
Load rating
400 V
9395-275/225
100% 400
A
9395-275/275
9395-300kVAPF0.8
100% 500
A
UPS model
Circuit breaker rating
Load rating
400 V
Bypass/MOB/MBS
Output
9395-275/225
100% rated
400 A
80 A (B-type breaker)
9395-275/275
9395-300kVAPF0.8
100% rated
500 A
100 A (B-type breaker)
