Eaton Power Xpert 9395P-900 Series - Page 70

UPS Installation Plan and Unpacking
3-36 Eaton
®
Power Xpert
®
9395P-900 UPS Installation and Operation Manual P-164000501—Rev 09 www.eaton.com/powerquality
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.
Battery voltage is computed at 2 volts per cell as defined by Article 480 of the NEC. Rated battery current is
computed at 2 volts per cell.
The battery wiring used between the battery and the UPS should not allow a voltage drop of more than 1% of
nominal DC voltage at rated battery current.
External DC input overcurrent protection and disconnect switch is to be provided by the customer. Table 3-27
and Table 3-28 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.
Eaton 9395P-900/500
100 700A 700A 800A 800A
80 800A 1000A 1000A 1000A
Eaton 9395P-900/450
100 600A 700A 700A 700A
80 700A 800A 1000A 1000A
Eaton 9395P-900/400
See Note
100 500A 600A 600A 700A
80 600A 700A 800A 800A
NOTE Because of the future upgradability to a fully rated 900 kW UPS with the addition of the FI-UPM, Eaton recommends using the breaker size
specified for a 1100 kW UPS.
Table 3-26. Recommended Bypass, Output, and MOB Circuit Breaker Ratings (100% and 80% Load Rating) (Continued)
UPS Model
Input Rating
% 480V 415V 400V 380V
Table 3-27. Recommended DC Input Battery Disconnect Ratings – Common Battery
UPS Model
Input Rating
480V
Eaton 9395P-900/900*
Eaton 9395P-900/900
Eaton 9395P-900/825
2500A
Eaton 9395P-900/750
Eaton 9395P-900/675
2000A
Eaton 9395P-900/600*
Eaton 9395P-900/600
Eaton 9395P-900/550
Eaton 9395P-900/500
Eaton 9395P-900/450
See Note 1
2500A
NOTE Because of the future upgradability to a fully rated 900 kVA UPS with the addition of the FI-UPM,
these breaker sizes are specified for a 900 kVA UPS.