GE Industrial Solutions GPS4827 - Manual (Page 8)

Galaxy Power System GPS4827
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the commercial or standby ac fails. Battery reserve can be engineered to
supply dc power for a specific period of time. In normal practice, battery
capacity is sized to provide 3 to 8 hours of reserve time.
AC Input connects the commercial and/or standby ac power sources to the
rectifiers within the system and provides overcurrent protection. In some
applications the ac service is wired directly to the rectifiers and overcurrent
protection is provided at the service panel.
Rectifiers convert an ac source voltage into the dc voltage level required to
charge and float the batteries and to power the using equipment.
Controller provides the local and remote control, monitoring, and
diagnostic functions required to administer the power system.
Batteries provide energy storage for an uninterrupted power feed to the
using equipment during loss of ac input or rectifier failure.
DC Distribution Panel provides overcurrent protection, connection points
for the using equipment, and bus bars used to interconnect the rectifiers,
batteries, and dc distribution.
Battery Connection Panel provides connection points for the battery strings
through battery disconnect fuses or contactors and current monitoring
shunts.