GE Industrial Solutions GPS 4848_100 Users Guide (dual rectifier shelf) - Manual (Page 45)

Galaxy Power System 4848/100 with Dual Rectifier Shelf
Issue 5 September 2011 Battery Connection Panels 6 - 1
6 Battery Connection Panels
Overview
Introduction Batteries are connected to the GPS 4848/100 cabinets based on the
system architecture.
Distributed
Architecture
For distributed power architecture, the batteries are terminated on
battery connection panels with shunts that monitor the battery charge /
discharge current through circuits on the cabinet BIC (Bay Interface
Card). These battery connection panels are located either in the very top
of the cabinet (shunt-only panels) or directly below the ac input panel.
As options, these panels may also include fuses or low battery voltage
disconnect/reconnect (LVBD/R) contactors. When equipped with
contactor(s), contactor control card(s) provide local/manual control of
the contactor(s) and communications with the controller for configured/
remote control.
Off Line Equalize (OLE) battery connection panels additionally provide
means to manually equalize single battery sections. A plug-in dc to dc
converter provides up to 65V to fully charge battery section cells,
equalizing cell float voltages. This restores fully charged cell capacity to
each cell in the section. A timer terminates the manually initiated
equalize operation.
Centralized
Architecture
For systems with centralized architecture, the batteries are connected
between the system charge and charge return buses. In turn, these buses
are connected to rectifier termination buses located behind the ac input
panels.
Illustrations The battery connection panels are illustrated in Figures 6-1 through 6-9.
Note: Battery connection panels are blue; dc distribution panels are
white.