• Valve-regulated batteries are usually used in UPS equipment. Make sure that the valve-regulated
batteries are sealed.
• The quantity of gas released from valve-regulated batteries must be less than the quantity of gas
released from flooded batteries. Reserve sufficient space for ventilation and radiation in the battery
installation plan.
• Valve-regulated batteries are not fully maintenance-free. Make sure that they are clean and examine
them regularly to make sure that they are tightly connected and free of corrosion.
• Because battery capacity decreases during transportation and storage, make sure that the batteries
are fully charged before a battery self-test, which may continue for several hours. Through multiple
charge-discharge cycles, the battery performance improves.
• By default, the UPS is configured to use 12 VDC VRLA batteries. If you need to connect other types of
batteries, contact your local Eaton representative before you proceed with the installation.
To install the external battery cabinet:
1. Shut down the UPS.
2. Make sure that all the circuit breakers of the external batteries are set to the OFF position.
3. Connect the protective earthing wire.
4. Connect the positive, negative, and neutral poles of the external battery cabinet according to the
cross-sectional area of the cable and the cable size suitable for the protection device.
5. Refer to the manufacturer’s instructions regarding the external battery cabinet.
WARNING
Make sure that the positive, negative, and neutral poles of the external battery
cabinet are connected correctly.
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In case of a parallel use of the 93T UPS, both common battery and separate battery are supported for the
cabinets.
If you configure a separate battery, each UPS is connected to a separate battery cabinet. The battery
settings vary between different cabinets.
The common battery configuration supports only the parallel connection of the cabinets. In the common
battery configuration each cabinet is connected to the same battery cabinet.
Multiple DC sources supported include lead-acid batteries, lithium batteries, and nickel-cadmium
batteries. As for the use of lithium batteries, the battery backup time and other battery parameters are
subject to the battery management system.
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This section introduces the communication features of the 93T UPS.
EATON 93T USER’S AND INSTALLATION GUIDE 614-40270
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December 2023 www.eaton.eu 5500
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