Emerson 115-480 Manuel D’Utilisation

Position—Liebert battery cabinets come in versions specific to the left side of the UPS. If the system 

includes a matching Liebert BDC, the cabinet should be mounted to the right of the UPS (nearest the 

busbars) and the battery cabinet(s) should be installed to the left of the UPS.
The battery cabinet(s) are designed to be located conveniently next to each UPS module on the left 

side only 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 37 for battery 

cabinet dimensions and weights.
Bolt-On Cabinets—Matching battery cabinets are designed to bolt only onto the left 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.
Service Clearance—Allow front access to the battery cabinet at all times for maintenance and 

servicing. 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 

clearance.
Cables—Cables may be run between the cabinets through cutouts in the top of the cabinet, 

eliminating the need for external conduit runs. Route cables before moving cabinets into final position 

for bolting together. No top or bottom entry cables are required, except for remotely located cabinets 

which require conduits.
Software—To allow the UPS to accurately display the battery run time, the number of battery 

cabinets must be noted when performing initial startup and setup using the configuration software. 

This is to be performed by the Liebert Services engineer when commissioning the unit.
Casters and Adjustable Stops—The adjustable stops are not designed to bear the full weight of the 

cabinet. Lower the stops 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.

After the battery cabinet equipment has been positioned and secured for operation and the batteries 

have been connected, connect the power cables as described below (see Figure 23).
1. Verify that all incoming high and low voltage power circuits are de-energized and locked out or 

tagged out before installing cables or making any electrical connections.

2. Remove the UPS right side panel to gain access to the ground and battery busbars.
3. Remove the battery cabinet front panel to gain access to the busbars.
4. Connect the safety ground and any necessary bonding ground cables to the copper ground busbar. 

(example: UPS located on the bottom of the equipment below the power connections).
All cabinets in the UPS system must be connected to the user's ground connection.

5. Connect the system battery cables from the UPS battery terminals (+ N -) to battery cabinet 

breaker BCB (+ N -) as shown in Figure 23. Be sure that the battery connections are made with 

the right polarity, and tighten the connections to 240lb-in. (27N-m) (M10 bolt). Do not close the 

battery circuit breaker before the equipment has been commissioned.

6. Connect TB1 from battery cabinet to J4 and J8 on the UPS according to Table 10.

NOTE
The grounding and neutral bonding arrangement must be in accordance with the National 

NOTE
The shunt trip drive capability for the battery breaker is 220VDC at 2.4A.