DEFINITY Made Easy Tools
Issue 3, December 2001

Install and Connect Multi-Carrier Cabinets   

Connect Large Battery Holdover

Return to Task List

When using large battery holdover, 1 battery cabinet is required for every system cabinet requiring holdover. The 24-cell battery cabinet must have a float voltage of 54.2 VDC.

1. Connect the -48 VDC cable to the large battery connector. See Power Distribution Unit (J58890CH).


2. Connect the -48 VDC RETURN cable to the ground terminal block.


3. Connect the temperature sensor cable, from the battery cabinet, to J20.

Power Distribution Unit (J58890CH)

Figure Notes:

1. Connect small battery holdover cable (or temperature sensor cable from large battery cabinet) to J20


2. Carrier Circuit Breakers


3. Ground Terminal Block


4. Connect -48 VDC Return - 1 AWG (50 mm 2) red cable here.


5. Connect -48 VDC - 1 AWG (50 mm 2) black cable


6. 1 AWG (50 mm 2) 50 ft (15.2 m) cable to large battery cabinet. For cables greater than 50 ft (15.2 m), contact your Avaya representative.


7. Ground Terminal Block


8. To AC load center or approved single-point ground block

Return to Task List