Lucent Technologies Galaxy Power System 4848/100
Issue 5 June 2000
Rectifiers 4 - 5
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 will result in a
rectifier shutdown and the issuing of a thermal alarm (TA). See Table
9-B.
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 by raising and lowering its output according to load
needs by watching the system voltage. As voltage rises, the system load
drops; when voltage falls, the system load increases.
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 applied to the rectifiers.
