Vertiv | Liebert® GXT5 | Installer/User Guide 19
2.4. Installing External Battery Cabinets
Optional, external battery cabinets (EBC) may be connected in parallel to the UPS to provide additional battery
run time� For approximate battery run times with additional EBCs, see Battery Run Times on page 62� External
battery cabinets are placed on one side of the UPS in a tower configuration or stacked beneath the UPS in a rack
configuration� Up to 10 EBCs may be connected to the UPS, and up to 6 may be detected using EBC-detection�
WARNING! Risk of electric shock
Can cause injury or death. Disconnect all local and remote electric power supplies before working with the UPS.
Ensure that the unit is shut down and power has been disconnected before beginning any maintenance.
CAUTION
The external battery cabinet(s) are heavy, see Table 7-4 on page 61. Take proper precautions when lifting
them.
To install the EBC(s):
1� Inspect the EBC for freight damage� Report damage to the carrier and your local dealer or Vertiv representative�
2� For tower installation:
• An additional set of support-base extensions ships with each EBC�
• See the steps in Tower Installation, to connect the support extenders and install the bases�
- or –
3� For rack installation:
• Rack-mount hardware ships with the EBC�
• Refer to the instructions included with the rack-mount kit to install�
NOTE: Optional slide rails and securing hardware are sold separately. Please contact your Vertiv representative
for options and Vertiv Technical Support for assistance.
4� Verify that the EBC breaker is in the “O” position�
5� Connect the supplied EBC cable(s) to the rear of the cabinet, then to the rear of the UPS, see Figure 2-2�
6� Turn the EBC breaker to the “On” position�
7� Verify the circuit breaker on the EBC is in the “On” position�
The additional back-up run time is now enabled�
NOTE: When removing an EBC, turn o the circuit breaker on the rear of the cabinet before disconnecting the
cable.
NOTE: If shipping or storing the UPS for an extended time, disconnect the EBC(s) to minimize stand-by
current drain on the batteries and help maintain design life.
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