Powerware 9390 Installation & Operation Manual page 168

Installation Information
16.
Bypass and output overcurrent protection and bypass and output disconnect switches are
to be provided by the user. Table M lists the maximum rating for bypass and output circuit
breakers satisfying the criteria for both.
Table M. Maximum Bypass and Output Circuit Breaker Ratings
17.
There is no DC disconnect device within the UPS.
18.
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.
19.
External DC input overcurrent protection and disconnect switch for the remote battery
location is to be provided by the user. Table N lists the maximum rating for continuous-duty
rated circuit breakers satisfying the criteria for both.
Table N. Maximum DC Input Circuit Breaker Ratings
Powerware 9390---40
Powerware 9390---50
Powerware 9390---60
Powerware 9390---80
20.
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.
21.
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.
22.
If the conductors used for DC input from the battery cabinets to the UPS are those
provided by the UPS manufacturer, and the UPS and battery cabinets are manufactured by
the same supplier, then it is acceptable if they do not meet the noted minimum conductor
sizes.
A-20
UPS Model UPS Model
Powerware 9390---40 Powerware 9390 40
Powerware 9390---50 Powerware 9390 50
Powerware 9390---60 Powerware 9390 60
Powerware 9390---80 Powerware 9390 80
UPS Model UPS Model
Powerware 9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
®
Output Voltage Rating
208V
80% Rated 175A
100% Rated 150A
80% Rated 225A
100% Rated 175A
80% Rated 250A
100% Rated 200A
80% Rated 350A
100% Rated 300A
Input Voltage Rating
208V 480V
150A 150A
200A 200A
250A 250A
300A 300A
DESCRIPTION:
POWER WIRING INSTALLATION NOTES
DRAWING NO:
164201535---5
REVISION:
B
480V
70A
60A
100A
80A
125A
90A
150A
125A
SHEET:
10 of 16
DATE:
111504