GE Industrial Solutions Galaxy Power Systems - Manual (Page 43)

Installation Guide for Galaxy Power Systems
Issue 12 August 2012 System Electrical Architecture Overview 4 - 3
Distributed Architecture
A distributed architecture is best thought of as small systems combined
together to form a much larger system. Each small system (cabinet)
contains an entire dc power system that includes ac input, rectifiers,
battery connection modules (with external batteries), and dc distribution
modules.
The dc power generated by the rectifiers and supported by the batteries
in a given cabinet will approximately equal the dc power distributed to
the loads from that cabinet. The dc power of each cabinet is electrically
interconnected so that power may be shared (up to 1200A) between the
cabinets. This sharing allows the system of cabinets to handle
imbalances in cabinet loads (due to improper sizing or to rectifier or
battery module failure).
Distributed architecture is summarized as follows: Each cabinet
(system) generates and distributes all the dc power it needs but is able to
borrow, or give up, power (up to 1200A) from other cabinets in the
system. Growth of the system is accomplished by adding another
cabinet (system) and interconnecting it to the original cabinets (system).
Multiple-cabinet configurations are shown in Figure 4-2 (two-cabinet
configuration) and Figure 4-3 (three-cabinet (or more) configuration).