Instruction manual

POWER WIRING INSTALLATION NOTES
071608C
15 of 23
DESCRIPTION:
DATE:
DRAWING NO: SHEET:
REVISION:
164201603-6
INSTALLATION INFORMATION
Eaton
®
9390 UPS (20–80 kVA) and 9390IT (20-40 kVA) Installation and Operation Manual S 164201603 Rev 4 www.eaton.com/powerquality
A-27
14. External overcurrent protection is not provided by this product, but is required by codes.
Refer to Table F through Table K for wiring requirements. If an output lockable disconnect
is required, it is to be supplied by the user.
15. Table P lists the maximum rating for input circuit breakers. When wiring a single‐feed input,
the rating requirements for the input circuit breakers are superceded by the ratings listed
in Table Q.
Table P. Maximum Input Circuit Breaker Ratings
UPS Model
Input Voltage Rating
% Rating 208V/220V 380V 400V 415V 480V
Powerware
9390/9390IT-40/20
80% 90A 50A 50A 45A 45A
100% 70A 40A 40A 35A 35A
Powerware
9390/9390IT-40/30
80% 125A 70A 70A 60A 60A
100% 100A 60A 60A 50A 45A
Powerware
9390/9390IT-40/40
Powerware 9390-80/40
80% 175A 90A 90A 80A 70A
100% 150A 80A 80A 70A 60A
Powerware 9390-80/50
80% 225A 110A 110A 100A 100A
100% 175A 90A 90A 90A 80A
Powerware 9390-80/60
80% 250A 150A 125A 125A 125A
100% 200A 110A 110A 100A 90A
Powerware 9390-80/80
80% 350A 175A 175A 175A 150A
100% 300A 150A 150A 150A 125A
C A U T I O N
To reduce the risk of fire, connect only to a circuit provided with maximum input circuit breaker current ratings from Table P in
accordance with the National Electrical Code, ANSI/NFPA 70.
16. Source protection for the AC input to bypass should be treated as if supplying an 80 kVA
three‐phase transformer, to allow for inrush current if an IDC with a transformer is installed.
Bypass input wiring and bypass input breaker rating should be treated as if supplying an
80 kVA load, regardless of the rating of the UPS.
17. 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 F through Table K.
The recommended line‐to‐line load unbalance is 50% or less.