Filter
Top Products
POWER WIRING INSTALLATION NOTES
111504
DESCRIPTION:
DATE:
DRAWING NO: SHEET:
REVISION:
B
164201535---5
10 of 16
Installation Information
A-20
Powerware
®
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
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
U
P
S
M
o
d
e
l
Output Voltage Rating
U
P
S
M
o
d
e
l
208V 480V
P
o
w
e
r
w
a
r
e
9
3
9
0
4
0
80% Rated 175A 70A
P
owerware 9390---40
100% Rated 150A 60A
P
o
w
e
r
w
a
r
e
9
3
9
0
5
0
80% Rated 225A 100A
P
owerware 9390---50
100% Rated 175A 80A
P
o
w
e
r
w
a
r
e
9
3
9
0
6
0
80% Rated 250A 125A
P
owerware 9390---60
100% Rated 200A 90A
P
o
w
e
r
w
a
r
e
9
3
9
0
8
0
80% Rated 350A 150A
P
owerware 9390---80
100% Rated 300A 125A
17. There is no DC disconnect device within the UPS.
18. A battery d i sconnect switch is r ecommended, 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
U
P
S
M
o
d
e
l
Input Voltage Rating
U
P
S
M
o
d
e
l
208V 480V
Powerware 9390---40 150A 150A
Powerware 9390---50 200A 200A
Powerware 9390---60 250A 250A
Powerware 9390---80 300A 300A
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 b y the UPS manufacturer, and the UPS and b attery cabinets are manufactured by
the same supplier, th en it is acceptable if they do not meet the noted minimum conductor
sizes.