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Battery Installation 13
6.2 Matching Battery Cabinets
Two sizes of optional battery cabinets are available. Refer to Figure 16 to Figure 18. The battery
cabinet cells range from 90 to 150 Ampere-hours. The same model battery cabinet may be paral-
leled in multiple cabinet strings for additional capacity. Battery capacity (in minutes) at your
installation will depend on cabinet model, number of cabinets, and amount of critical load on the
UPS.
1. Handling. The Battery Cabinet weighs 3000 to 4900 pounds. Forklift slots are provided for
easy handling.
2. Cabinet Inspection. Remove all panels and visually inspect the batteries, bus connections,
and cabinet for any damage. Exercise caution; voltage is present within the Battery
Cabinet even before installation. If there are signs of damage, do not proceed. Call Liebert
Global Services at 1-800-543-2378.
3. Battery Storage. The batteries used in the Battery Cabinet have an excellent charge
retaining characteristic. The batteries can be stored for up to six months without any
appreciable deterioration. Self-discharge rate of the batteries is approximately 3% per month
when the batteries are stored in temperatures of 15°C to 25°C (59°F to 77°F). If the Battery
Cabinet is planned to be stored for longer than six months, contact Liebert Customer Service
for recommended action.
4. Installation. The Battery Cabinet(s) can be located conveniently next to each UPS module.
The front-access-only-design eliminates side and rear service clearance requirements.
• Environment. Locate the Battery Cabinet in a clean, dry environment. Recommended
temperature range for optimum performance and lifetime is 20°C (68°F) to 25°C (77°F).
• Service Clearance. Allow front access to the Battery Cabinet at all times for mainte-
nance and servicing. Electrical codes require that the Battery Cabinet be installed with no
less than 3 feet (1 meter) of clearance at the front of the cabinet when operating. Side and
rear panels do not require service clearance.
• Side Panels. Remove protective side panels to connect cabinets together. Panels are
retained at the bottom with three screws.
• Shield Plate. If the Battery Cabinets are bolted to the side of the UPS module, the shield
plate inside the Battery Cabinet should be on the side toward the UPS module for proper
UPS airflow. Move the shield if required by your Battery Cabinet location.
• Cables. Cables may be run between the cabinets through cutouts in the top of the cabi-
net, eliminating the need for external conduit runs. Route cables before moving cabi-
nets into final position for bolting together. Remove top panels for access, if
required. No top or bottom entry cables are required, except for remotely located cabinets
which require conduits. Refer to Figure 16 through Figure 18.
• Built-In Cabinets. Matching Battery Cabinets are designed as a bolt-on section to the
side of the UPS module cabinet. Use bolts (3/8"-16 x 1-1/4") to connect cabinet frames at
posts, two places front and two places rear. Brackets are provided to make rear connec-
tions easier from inside the cabinet.
6.3 Non-Standard Batteries
When batteries other than a matching Battery Cabinet are used (not recommended), a remote
battery disconnect switch with overcurrent protection is required per the National Electrical
Code. Refer to Figure 53 and Figure 54. Contact your Liebert sales representative regarding
this option.
1. Install battery racks/cabinets and batteries per manufacturer’s installation and maintenance
instructions.
2. Verify battery area has adequate ventilation and battery operating temperature complies
with manufacturer’s specification.
If you have any questions concerning batteries, battery racks, or accessories, contact Liebert Glo-
bal Services at 1-800-543-2378.
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