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3.7
Matching Battery Cabinets
Two sizes of optional battery cabinets are available. Refer to Figures 10 and 11. The same model bat-
tery cabinet may be installed in parallel in multiple cabinet strings for additional capacity. Battery
run time depends on the cabinet model, the number of cabinets and the load on the UPS.
Handling—The battery cabinet has casters to facilitate movement over short distances. The bottoms
of the battery cabinets are reinforced to permit movement by forklift over longer distances.
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.
Storage—The batteries can be stored for up to six months without appreciable deterioration. If plan-
ning to store a battery cabinet for longer than six months or at temperatures higher than 77°F (25°C),
contact Liebert Customer Service for recommended precautions.
3.7.1
Installation Considerations
The battery cabinet(s) can be located conveniently next to each UPS module, and are also available in
stand-alone configurations with painted side panels. The front access design eliminates side and rear
service clearance requirements. Refer to Table 23 for battery cabinet dimensions and weights.
Environment—Install the battery cabinet in a clean, dry environment. The recommended tempera-
ture range for optimum performance and lifetime is 68 to 86°F (20-30°C).
Position—Liebert battery cabinets come in versions specific to either the left or right side of the
UPS. Control wires and power cables are cut to different lengths for the different versions. For sys-
tems with multiple battery cabinets, the cabinets have different part numbers indicating placement
of the cabinet relative to the UPS. An "A" or "1" designation means the cabinet is adjacent to the UPS.
Cabinet "B" will be adjacent to cabinet "A." If the system includes a matching maintenance bypass
cabinet (MBC), the MBC should be mounted to the left of the UPS (nearest the busbars) and the bat-
tery cabinet(s) should be installed to the right of the UPS. Likewise left-side placement of the battery
cabinet is preferable.
Service Clearance—Allow front access to the battery cabinet at all times for maintenance and ser-
vicing. Electrical codes require that the battery cabinet be installed with no less than 3 feet (1m) of
clearance at the front of the cabinet when operating. Side and rear panels do not require service clear-
ance.
Cables—Cables may be run between the cabinets through cutouts in the top of the cabinet, eliminat-
ing the need for external conduit runs. Route cables before moving cabinets into final position for bolt-
ing 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 Figures 10 and 11.
Bolt-On Cabinets—Matching battery cabinets are designed to bolt onto the side of the UPS module
cabinet. Use bolts that ship with each unit to connect cabinet frames at posts, two places in the front
and two places in the rear.
Software—The number of battery cabinets must be noted when performing initial startup and setup
using the configuration software.
Casters and Leveling Feet—The leveling feet are not designed to bear the full weight of the cabi-
net. Lower the feet until they are finger-tight in contact with the floor. Then tighten a small amount
with a wrench (less than two turns) to give a good friction fit. When mounting the battery cabinet on
seismic stands, ensure that the casters are bearing the weight of the cabinet.
Battery Support Tray—Be sure to connect the battery tray support to the front of the cabinet
before sliding a battery tray out for connection or service. Without the support, the battery tray may
fall out of the cabinet. See Figure 13 for details.
24
Battery Installation
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