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JADAC Power Support
2.5
The internal battery
The Tower 3300 series can house a maximum of four parallel banks of
32x12V7A/h or 32x12V9A/h internal batteries. The nominal battery voltage is
384VDC, which is dangerous and can be potentially lethal.
2.5.1 Battery safety
Extreme care should be exercised when working with batteries.
Do not short out the battery terminals
Do not drop the batteries
Ensure the polarity connections are correct
Ensure that the battery interconnections are connected securely
Ensure that the interconnections are not pinched between trays
Batteries should only be installed by qualified personnel
2.5.2 Battery tray connection
The batteries in the battery tray are wired to a tray connector plug at the front of
each tray. The tray connectors respectively plug into the interconnections that
are fixed to the UPS chassis.
Note: The top four trays house ten batteries each, while the middle and bottom
trays all house eleven batteries each.
The interconnecting cables are supplied with the unit
Remove these links
for separate feeds
The wiring terminals as seen from rear of the unit
Detail of battery tray connection to the tray connector plug
3300 UPS Manual
CONNECTOR PLUG
Page 6 of 24
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