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Battery Installation 11
6.2 Battery Cabinets
Two sizes of optional battery cabinets are available. Refer to Figure 11 through Figure 13. The
battery cabinet cells range from 90 to 150 Ampere-hours. The same model battery cabinet may be
paralleled 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 between 3100 and 5100 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 1-800-542-2378.
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 must be stored for longer than six months, contact Liebert Global Services for
recommended action.
4. Installation. The Battery Cabinet(s) can be located conveniently next to the 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 battery cabinets together. Panels
are retained at the bottom with three screws.
• Shield Plate. The shield plate in each Battery Cabinet should be on the side toward the
UPS system. 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-
nets, eliminating the need for external conduit runs. Route cables before moving cab-
inets into final position for bolting together. Remove top panels for access. No top or
bottom entry cables are required, except for remotely located cabinets which require con-
duits. Refer to Figure 11 through Figure 13.
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 39 and Figure 40. Contact your Liebert sales representative.
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.
NOTE
The 300-450 kVA UPS module is approximately 2 inches deeper than the
Battery Cabinet and is not designed to bolt directly to it.