User Manual

Power Cabinet

68P09255A57-2

Aug 2002

SC4812ET Optimization/ATP Manual Software Release R16.1.x.x

PRELIMINARY

1-26

Internal FRUs

Figure 1-10 shows the location of the Internal Field Replaceable

Units (FRUs). A brief description of each Internal FRU is found in the

following paragraphs.

Figure 1-10: Power Cabinet with Batteries Installed (Doors Removed for Clarity)

NOTE

Punch Block is not

visible in this view.

Rectifier

Shelves

Rectifier

Alarm Module

DC Circuit

Breakers

AC Load

Center

GFCI Outlets

(Back)

Temperature

Control Module

FRONT VIEW POWER CABINET

Batteries (Battery

Heaters located

under batteries)

FW00164

Batteries

The batteries provide a +27 Vdc backup to the RF Cabinet should AC

Power be lost. The Power Cabinet can accommodate a total of 24 12-V

batteries, configured in 12 strings of 2 batteries each. The time duration

of backup provided depends on system configuration.

Battery Heater

The battery heaters provide heating to the batteries in the Power Cabinet.

A separate heater is required for each string of batteries. The heater is a

pad the batteries sit on located top of each battery shelf. The number of

heaters is dependent on system configuration.