GE Industrial Solutions Galaxy Power Systems - Manual (Page 153)

Installation Guide for Galaxy Power Systems
Issue 12 August 2012 Battery Connection Panels 11 - 1
11 Battery Connection Panels
Connecting and Disconnecting Batteries
Note For Centralized Architectures, skip this section.
Overview Battery strings or sections may be connected to the cabinet through
contactors and a shunt, fuses and a shunt, circuit breakers and a shunt,
or a shunt only. The shunts in each battery connection panel are required
to obtain a system load reading. The contactor, fuse, and circuit breaker
panels are equipped with alarm cards that report back to the controller if
the battery section is taken off the system bus. Charge and discharge
current can be read from the front panel of the Galaxy controller when
battery section shunts are properly wired and programmed.
Disconnect voltage levels on contactor panels are controlled by the
Galaxy controller. Fuses and circuit breakers provide only overload
protection for current into or out of the batteries. They do not provide
short circuit current protection of the batteries since they are located in
the cabinet and not at the batteries. They do, however, provide a
convenient way to disconnect the batteries from the system bus for
maintenance.
Note: Panels for battery connection are blue; dc distribution panels are
white.