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093004
164201536-5
BATTERY WIRING INSTALLATION NOTES
Installation Information
A-9
EATON
Powerware
®
9390 Integrated Battery Cabinet (Models IBC-S and IBC-L) Installation Manual
S
164201536 Rev D
www.eaton.com/powerquality
1.
Refer to NEC Article 250 and local codes for proper grounding practices.
2.
The battery cabinet frame is not referenced to the DC circuit.
3.
Battery voltage is computed at 2 volts per cell as defined by Article 480 of the NEC. Rated
battery current is computed at 1.8 volts per cell.
4.
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.
5.
A battery disconnect switch is recommended, and may be required by NEC or local codes
when batteries are separately located. The battery disconnect switch may be supplied as
an accessory, and should be installed between the battery cabinet(s) and the UPS.
6.
If the conductors used for DC input from the battery cabinet(s) to the UPS are those
provided by the UPS manufacturer, and the UPS and battery cabinet are manufactured by
the same supplier, then it is acceptable if they do not meet the noted minimum conductor
sizes.
7.
Each battery cabinet can be installed as a line‐up‐and‐match or standalone system. The
term
line‐up‐and‐match
refers to battery cabinets that are physically attached to the UPS,
share internal wiring, and use the battery cabinet breaker as the battery isolation device.
The term
standalone
refers to battery cabinets that are not physically attached to the UPS,
are wired with external contractor‐supplied wiring, and use a single disconnect device
located near the battery cabinet(s). Each battery cabinet has its own overcurrent
protection device with a built‐in UVR feature that must be used in all configurations.
8.
Refer to the appropriate Powerware 9390 UPS Installation and Operation Manual, as
referenced in paragraph 1.6, for UPS cabinet conduit and terminal locations, and terminal
specifications.
9.
The Environmental Monitoring Probe (EMP), for remote monitoring of battery
environmental conditions, must be installed and set up by an Eaton Customer Service
Representative, or the extended battery warranty terms specified on page W-1 will be
void.
10.
The external ground wire requirements are shown in Table C.
Table C. External Ground Wire Requirements for Battery Cabinets
UPS
Model
Battery
Type
Number of
Cabinets
Line‐up‐and‐
Match or
Separate
Battery
Wire Size
Size and Type
Screw
Torque
Nm (lb in)
all
all
all
all
1/0
7/16
I
slot
5.6 (50)
