GE Industrial Solutions GPS 4848_100 Users Guide (dual rectifier shelf) - Manual (Page 38)

Galaxy Power System 4848/100 with Dual Rectifier Shelf
4 - 4 Rectifiers Issue 5 September 2011
Features, continued
Thermal Alarm The rectifier senses the internal operating temperature and will issue a
thermal alarm if the internal temperature exceeds a safe operating level.
Ambient temperatures above the maximum rating may result in a
rectifier shutdown and the issuing of a thermal alarm (TA).
Controller
Communications
Alarm
When communications between the rectifier and controller are
interrupted, the rectifier continues to operate and the red ALM LED on
the rectifier blinks.
Autonomous
Operation of the
Rectifier
If communication with the Galaxy controller is lost, the rectifier will
continue to operate and deliver regulated power to the system load.
Connectorized The rectifiers provide the controller with a full complement of status and
alarm messages. The rectifier status and alarm signals, ac input, and dc
output are all connectorized for easy installation and maintenance. All
connections automatically occur as the rectifier is physically mated to its
shelf.
“Forced” Load
Sharing
The controller forces rectifiers to load share by sending messages to
them. In the event communication to the controller is lost or the
controller malfunctions, load share balance is maintained while ac or dc
power is continuously applied to the rectifiers.