Powerware 9390, Installation & Operation Manual

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POWER WIRING INSTALLATION NOTES
062504
DESCRIPTION:
DATE:
DRAWING NO: SHEET:
REVISION:
A
164201535---5
Installation Information
A-12
Powerware
®
9390 UPS (40–80 kVA) Installation and Operation Manual
S
164201535 Rev A
12.
External overcurrent protection is not provided by this product, but is required by codes.
Refer to Table E or Table F for wiring requirements. If an output lockable disconnect is
required, it is to be supplied by user.
13.
Table J 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the rating requirements for the input circuit breakers are superceded by the ratings listed in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 K.
Table J. Maximum Input Circuit Breaker Ratings
UPS Model
Input Voltage Rating
UPS Model
208V 480V
9390 80/40
80% Rated 175A 70A
9390---80/40
100% Rated 150A 60A
9390 80/80
80% Rated 350A 150A
9390---80/80
100% Rated 300A 125A
CAUTION: To reduce the risk of fire, connect only to a circuit provided with
maximum input circuit breaker current ratings from Table J in accordance with the
National Electrical code, ANSI/NFPA 70.
14.
Source protection for the AC input should be treated as if you were supplying a 40 kVA or
80 kVA three phase transformer, to allow for inrush current.
15.
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 E or Table F. The
recommended line-to-line load unbalance is 50% or less.
16.
Bypass and output overcurrent protection and bypass and output disconnect switches are
to be provided by the user. Table K lists the maximum rating for bypass and output circuit
breakers satisfying the criteria for both.
Table K. Maximum Output Circuit Breaker Ratings
UPS Model
Output Voltage Rating
UPS Model
208V 480V
9390 80/40
80% Rated 175A 70A
9390---80/40
100% Rated 150A 60A
9390 80/80
80% Rated 350A 150A
9390---80/80
100% Rated 300A 125A