Siemens SIPROTEC 7SS523 V3.2 Manual page 312

Maintenance and Repair
Bay unit
296
To replace the battery in the bay unit:
Remove the covering caps on the front panel, and unscrew the screws.
Swing the front panel to the left.
The battery is located on the bottom front of the PFE module
(Figure 8-6, page 296).
Figure 8-6 Front view after removing the front panel, and location of the buffer battery
7SS523
Figure 8-7 Front view after removing the front panel, and location of the buffer battery
7SS525
Use the cable binder to pull the spent battery out from its snap-in holder.
Remove the cable binder from the old battery and fasten it to the new battery.
7SS52 V4 Manual
C53000-G1176-C182-1